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Business Writing

Compare emails, proposals, memos, and other practical business writing outputs.

Snapshot 2026-W42 Results as of 2026-10-16

6 models answered the same 16 tasks. The same judges (Claude Opus 5.5 / GPT-6.1 Sol / Gemini 3.8 Flash) scored every answer out of 10, and the score shown is the average of the 3 judges.

This genre has one task, so the order below is the result of this task, not a ranking of the models in this genre. The overall ranking uses all 16 tasks.

At a glance

Results for this task

Split-Shipment Notice with a Conditional Credit

Rank Model Average (out of 10)
1 Claude Sonnet 5.5 9.71
2 Claude Opus 5.5 9.67
3 GPT-6.1 Sol 9.62
4 GPT-6 Luna 9.47
5 Gemini 3.8 Flash 9.44
6 Gemini 3.5 Flash-Lite 7.52
Score colors ≥ 9 8–9 7–8 6–7 5–6 < 5

Gap between the highest and lowest average: 2.19 points.

The task

Split-Shipment Notice with a Conditional Credit

Instructions

You are Daniel Reyes, account manager at Halden Packaging. Write an email to Marisol Ortega, procurement lead at Brightleaf Teas, about purchase order PO-4471, using the facts and internal notes in the context.

Requirements:

  1. A subject line, then an email body of 200-300 words.
  2. State both shipments with their exact quantities and dates.
  3. State the credit as a euro amount, say what it is calculated on and how it is applied, and make clear when it applies.
  4. Explain the cancellation option, including the exact written-notice deadline as a calendar date.
  5. Follow every internal note.
  6. Acknowledge the June delay once and briefly, and end with exactly one clear request that includes a reply date.
Material given with the task

Facts you may share:

  • PO-4471: 1,200 printed tea tins at EUR 18.40 each, all originally due to ship on Friday 23 October.
  • New plan: 700 tins ship on Friday 23 October as planned; the remaining 500 ship on Friday 13 November.
  • The 700 tins are invoiced at the normal price when they ship.
  • Halden will credit 5% of the value of the delayed tins, applied to the invoice for the November shipment. The credit applies only to delayed tins that are actually delivered.
  • Instead, Brightleaf may cancel the 500 delayed tins without any charge, provided it tells Halden in writing at least 10 calendar days before the November ship date.
  • Brightleaf's previous order, in June, was also delivered late, and Marisol was frustrated at the time.
    Internal notes (not for the customer):
  • The delay is caused by a fire at our lacquer supplier, Varnwell Coatings. Do not name the supplier or mention the fire; you may say "a supply interruption at one of our raw-material suppliers".
  • Production thinks the 500 tins might ship up to a week early, but this is not confirmed. Do not promise or hint at an earlier date.
How the judges were told to score
Requirement checklist: (1) subject line (structure) plus a 200-300-word body (clarity; body over 330 words also tone -1); (2) 700 tins on Friday 23 October and 500 on Friday 13 November (clarity); (3) credit amount, basis, application and condition (actionability); (4) cancellation of the 500 with the notice deadline (actionability); (5) internal notes respected (appropriateness); (6) one brief June acknowledgement (tone) and exactly one closing request with a reply date (structure). Answer key (pre-computed): credit = 5% of 500 x EUR 18.40 = 5% of EUR 9,200 = EUR 460, deducted from the November invoice, and only if the 500 tins are delivered. Cancellation deadline: written notice by Tuesday 3 November (10 calendar days before 13 November); '4 November' or vaguer wording is wrong. Optional but correct: the 700-tin invoice is EUR 12,880. 9+ only if every figure and date is correct, the conditional nature of the credit is clear, the June delay is owned in one sentence without grovelling or excuses, and the email gives Marisol a clear choice with one reply date. Caps: naming Varnwell, mentioning a fire, or any wording that suggests an earlier ship date ('possibly sooner', 'we will try to bring it forward') -> appropriateness <= 4; wrong credit amount -> actionability <= 5; wrong or missing deadline, credit and cancellation offered as if they combine, or a reply date after 3 November -> actionability <= 6; more than one closing request (stating the cancellation terms is not a request) or no reply date -> structure <= 7; defensive or over-apologetic tone across several sentences -> tone <= 6.

Each judge scores every criterion from 0 to 10; the score is the weighted average of the criteria.

Answers, highest average first

Judges read the English original. Translations are for reading only.

1 Claude Sonnet 5.5

Average (out of 10) 9.71

Subject: PO-4471: split shipment and 5% credit on the delayed tins

Dear Marisol,

PO-4471 (1,200 printed tea tins at EUR 18.40 each) will now ship in two parts because of a supply interruption at one of our raw-material suppliers. I know this follows the late delivery in June, and I am sorry to be adding another delay.

Shipments

  • Friday 23 October: 700 tins, as originally planned. They will be invoiced at the normal price (EUR 12,880) when they ship.
  • Friday 13 November: the remaining 500 tins.

Credit
The 500 delayed tins are worth EUR 9,200. We will credit 5% of that value, EUR 460, as a deducti...

Show Full Answer ▼

Subject: PO-4471: split shipment and 5% credit on the delayed tins

Dear Marisol,

PO-4471 (1,200 printed tea tins at EUR 18.40 each) will now ship in two parts because of a supply interruption at one of our raw-material suppliers. I know this follows the late delivery in June, and I am sorry to be adding another delay.

Shipments

  • Friday 23 October: 700 tins, as originally planned. They will be invoiced at the normal price (EUR 12,880) when they ship.
  • Friday 13 November: the remaining 500 tins.

Credit
The 500 delayed tins are worth EUR 9,200. We will credit 5% of that value, EUR 460, as a deduction on the invoice for the November shipment. The credit applies only to delayed tins that are actually delivered to you.

Cancellation option
Instead of taking the delayed tins, you may cancel the 500 tins without any charge. Halden must receive your written notice by Tuesday 3 November, which is 10 calendar days before the November ship date. If you cancel, no credit applies, because no delayed tins would be delivered. The 700 tins shipping on 23 October are not affected.

Next step
Please reply by Friday 30 October to confirm whether you want the 500 tins delivered with the credit, or want to cancel them.

Kind regards,

Daniel Reyes
Account Manager, Halden Packaging

Claude Opus 5.5 9.14

A precise, well-organised email. Every figure and date is correct: 700 tins on 23 October (EUR 12,880), 500 on 13 November, a EUR 460 credit on EUR 9,200 deducted from the November invoice only if those tins are delivered, and written cancellation notice by Tuesday 3 November. The internal notes are respected, the June delay is acknowledged in one sentence, and the email ends with a single request due 30 October. The only minor weakness is markdown-style bold headers, which feel heavier than a typical customer email needs.

Score by criterion

Appropriateness

93

It uses the approved wording, 'a supply interruption at one of our raw-material suppliers'. It does not name Varnwell, mention the fire or hint at an earlier ship date. Only facts cleared for sharing are disclosed.

Clarity

90

The subject line is present and the 220-word body is within range. Both shipments are stated with exact quantities and dates, and the credit and cancellation sections are easy to scan. The markdown asterisks are a small polish issue for an email.

Structure

90

The email moves logically from context to shipments, credit, cancellation and next step. It ends with exactly one clear request with a reply date of Friday 30 October. The section headers are slightly heavy for an email.

Actionability

94

The credit is EUR 460, correctly calculated as 5% of EUR 9,200, deducted from the November invoice and conditional on delivery. The cancellation deadline, Tuesday 3 November, is correct, and the email states explicitly that the credit and cancellation do not combine. The reply date falls before the deadline, and the choice is clearly framed.

Tone

89

The June delay is owned in a single brief sentence, without grovelling or excuses. The rest of the email is professional and calm. The apology is somewhat generic, but it is well judged.

GPT-6.1 Sol 10.00

The email meets all requirements: it gives accurate shipment details, explains the EUR 460 credit and its delivery condition, and states the correct written cancellation deadline. It respects the internal notes, briefly acknowledges the June delay, and closes with one clear choice and reply date.

Score by criterion

Appropriateness

100

Uses only the permitted explanation for the delay, without naming the supplier, mentioning the fire, or suggesting an earlier shipment.

Clarity

100

Meets the body-length requirement and clearly presents both shipments with exact quantities and dates. All prices, calculations, and dates are correct.

Structure

100

Includes a clear subject line, logically organized sections, and exactly one closing request asking Marisol to choose an option by Friday 30 October.

Actionability

100

Correctly explains the EUR 460 credit as 5% of EUR 9,200, deducted from the November invoice only for delayed tins actually delivered. Clearly offers cancellation as an alternative, without charge, with written notice due Tuesday 3 November.

Tone

100

Professional, direct, and considerate. Acknowledges and takes responsibility for the repeated delay in one brief sentence without becoming defensive or over-apologetic.

Gemini 3.8 Flash 10.00

The response is an exemplary execution of the task. It adheres strictly to all word counts, internal constraints, and date calculations, calculating the credit and cancellation deadline perfectly while maintaining an appropriately professional and accountable tone.

Score by criterion

Appropriateness

100

Follows all internal instructions perfectly: uses the permitted wording for the supply interruption without mentioning the fire or supplier name, and completely avoids hinting at an earlier ship date.

Clarity

100

The body text is 220 words (within the 200-300 word range) and clearly communicates the exact quantities and dates for both shipments.

Structure

100

Includes a clear subject line, a logical layout with helpful headings, and concludes with exactly one explicit request with a sensible reply date.

Actionability

100

All calculations are exact (EUR 460 credit on EUR 9,200 base; 3 November cancellation deadline). The conditional application of the credit versus cancellation is clearly defined.

Tone

100

The acknowledgement of the June delay is handled in a single concise sentence without being defensive or grovelling, striking a balanced and professional business tone throughout.

2 Claude Opus 5.5

Average (out of 10) 9.67

Subject: PO-4471: Split shipment of tea tins, EUR 460 credit, and your cancellation option

Dear Marisol,

I'm writing about purchase order PO-4471 for 1,200 printed tea tins at EUR 18.40 each. All 1,200 were due to ship on Friday 23 October. Because of a supply interruption at one of our raw-material suppliers, we now need to send the order in two shipments:

  • Shipment 1: 700 tins ship on Friday 23 October, as originally planned. They will be invoiced at the normal price when they ship.
  • Shipment 2: The remaining 500 tins ship on Friday 13 November.

I know your June order also arrived late...

Show Full Answer ▼

Subject: PO-4471: Split shipment of tea tins, EUR 460 credit, and your cancellation option

Dear Marisol,

I'm writing about purchase order PO-4471 for 1,200 printed tea tins at EUR 18.40 each. All 1,200 were due to ship on Friday 23 October. Because of a supply interruption at one of our raw-material suppliers, we now need to send the order in two shipments:

  • Shipment 1: 700 tins ship on Friday 23 October, as originally planned. They will be invoiced at the normal price when they ship.
  • Shipment 2: The remaining 500 tins ship on Friday 13 November.

I know your June order also arrived late, and I'm sorry this is happening again.

To make up for the delay, we will credit 5% of the value of the 500 delayed tins (500 × EUR 18.40 = EUR 9,200). That comes to EUR 460, which we will apply to the invoice for the November shipment. The credit applies only to delayed tins that are actually delivered, so if any of the 500 tins are cancelled, no credit is given for those tins.

If you would prefer not to wait, you can cancel the 500 delayed tins at no charge. To do this, you need to tell us in writing at least 10 calendar days before the November ship date. That means your written notice must reach us by Tuesday 3 November. The 700 tins shipping on 23 October are not affected either way.

Please reply in writing by Tuesday 3 November to confirm whether you will keep the 500 tins for the 13 November shipment or cancel them.

Kind regards,

Daniel Reyes
Account Manager
Halden Packaging

Claude Opus 5.5 9.02

A very accurate, well-organised email. Both shipments, the EUR 460 credit with its basis, application and condition, and the Tuesday 3 November cancellation deadline are all correct. The internal notes are respected, the June delay is owned in one sentence, and the email closes with a single request and a valid reply date. The only minor flaws are a phrase implying partial cancellation and some markdown bolding.

Score by criterion

Appropriateness

92

It uses the approved phrase 'a supply interruption at one of our raw-material suppliers'. It does not name Varnwell, mention a fire, or hint at an earlier ship date. It includes only shareable facts.

Clarity

88

The body is 271 words, within range. The shipments are stated exactly: 700 on Friday 23 October and 500 on Friday 13 November. The credit arithmetic is shown transparently. The phrase 'if any of the 500 tins are cancelled' slightly implies partial cancellation, which the terms do not clearly offer.

Structure

90

There is a clear subject line and a logical flow: situation, shipments, apology, credit, cancellation option, then one bolded closing request with the reply date of 3 November. Bold markdown in an email body is a minor stylistic quirk.

Actionability

91

The credit is correct (EUR 460 = 5% of EUR 9,200), applied to the November invoice, and conditional on delivery. The deadline of Tuesday 3 November is correct. The reply date does not fall after 3 November. Marisol is given a clear keep-or-cancel choice, and the credit and cancellation are presented as alternatives.

Tone

89

The June delay is acknowledged once, briefly and sincerely, without grovelling or excuses. The tone is professional and customer-focused throughout. It is slightly plain, but there is no defensiveness.

GPT-6.1 Sol 10.00

The email fully meets the task: it clearly presents both shipments, accurately explains the conditional EUR 460 credit and cancellation deadline, and respects all internal restrictions. The June delay is acknowledged briefly, and the email ends with one clear, dated request.

Score by criterion

Appropriateness

100

Uses the permitted supply-interruption explanation without naming the supplier, mentioning the fire, or suggesting an earlier shipment. The content is appropriate for the customer relationship.

Clarity

100

Clearly states 700 tins shipping Friday 23 October and 500 shipping Friday 13 November. Pricing and credit calculations are accurate, and the body meets the 200–300-word requirement.

Structure

100

Includes a subject line, greeting, well-organized body, and professional signature. Ends with exactly one clear request to choose between retaining and cancelling the delayed tins, with a reply date of Tuesday 3 November.

Actionability

100

Correctly calculates EUR 460 as 5% of EUR 9,200, specifies application to the November invoice, and limits the credit to delayed tins actually delivered. Clearly offers cancellation of the 500 tins without charge and gives the correct written-notice deadline of Tuesday 3 November.

Tone

100

Professional, direct, and considerate. Acknowledges the June delay in one brief sentence with an appropriate apology, without defensiveness, excuses, or excessive contrition.

Gemini 3.8 Flash 10.00

The response is an exemplary execution of the task. It adheres strictly to all business constraints, word count parameters, and internal notes. All calculations, dates, conditions, and deadlines are completely accurate, and the tone strikes the ideal professional balance.

Score by criterion

Appropriateness

100

Adheres flawlessly to all internal instructions: it omits the supplier's name and the fire, uses the approved phrasing regarding raw-material supply interruption, and makes no mention or hint of potential early delivery.

Clarity

100

The body length of 271 words falls cleanly within the 200-300 word requirement. Both shipment quantities and their corresponding dates (Friday 23 October and Friday 13 November) are stated with complete precision.

Structure

100

The email features a concise, informative subject line, a logical layout with clear bullet points, and concludes with exactly one request that includes an unambiguous reply date.

Actionability

100

All calculations are correct: the credit of EUR 460 (5% of EUR 9,200) is clearly detailed along with its application and conditional nature. The cancellation terms and the exact deadline date of Tuesday 3 November are articulated perfectly.

Tone

100

The past delay in June is acknowledged in a single, sincere sentence without being defensive or grovelling, maintaining a professional and customer-focused tone throughout.

3 GPT-6.1 Sol

Average (out of 10) 9.62

Subject: PO-4471: Split Shipment and Conditional Credit

Dear Marisol,

I’m writing to confirm a revised shipment plan for PO-4471, covering 1,200 printed tea tins at EUR 18.40 each. A supply interruption at one of our raw-material suppliers means we cannot ship the full order on the original date. I’m sorry for this disruption, particularly following the late delivery of your June order.

The shipment schedule is:

  • 700 tins will ship on Friday 23 October, as originally planned. These will be invoiced when they ship at the normal price of EUR 18.40 each, totaling EUR 12,880.
  • **The remaining 500 tins will s...
Show Full Answer ▼

Subject: PO-4471: Split Shipment and Conditional Credit

Dear Marisol,

I’m writing to confirm a revised shipment plan for PO-4471, covering 1,200 printed tea tins at EUR 18.40 each. A supply interruption at one of our raw-material suppliers means we cannot ship the full order on the original date. I’m sorry for this disruption, particularly following the late delivery of your June order.

The shipment schedule is:

  • 700 tins will ship on Friday 23 October, as originally planned. These will be invoiced when they ship at the normal price of EUR 18.40 each, totaling EUR 12,880.
  • The remaining 500 tins will ship on Friday 13 November. Their value before the credit is EUR 9,200.

If all 500 delayed tins are delivered, Halden will issue a EUR 460 credit, calculated as 5% of their EUR 9,200 value. This credit will be applied to the invoice for the November shipment, reducing that invoice to EUR 8,740. The credit applies only to delayed tins actually delivered; any canceled or undelivered tins do not qualify.

Alternatively, Brightleaf may cancel the 500 delayed tins without any charge. To use this option, Halden must receive your written cancellation notice no later than 3 November, which is 10 calendar days before the November ship date. The 700-tin shipment remains scheduled as above.

Please reply in writing by 3 November to confirm whether Brightleaf will accept the November shipment with the conditional credit or cancel the 500 delayed tins.

Best regards,
Daniel Reyes
Account Manager
Halden Packaging

Claude Opus 5.5 8.85

A well-built email that meets every checklist item. The credit is correctly stated as EUR 460, calculated on EUR 9,200 and deducted from the November invoice. The 3 November cancellation deadline is correct, both shipments are exact, and the internal notes are fully respected. The June delay gets one short sentence, and the email closes with a single request carrying a valid reply date. Minor flaws: 'If all 500 delayed tins are delivered' slightly conflicts with the per-tin condition stated next, and markdown bolding is out of place in a plain email.

Score by criterion

Appropriateness

92

Uses the approved 'supply interruption at one of our raw-material suppliers' wording. It does not name Varnwell, mentions no fire and gives no hint of an earlier ship date. Everything shared is customer-appropriate.

Clarity

86

The subject line is present and the body is 248 words, within range. It states 700 tins on Friday 23 October and 500 on Friday 13 November, with clear figures, including the optional EUR 12,880. The phrasing 'If all 500 delayed tins are delivered' slightly muddies the per-tin condition, and the markdown bold may not render in email.

Structure

88

The subject line is clear and the flow is logical: context, schedule, credit, alternative, then request. It ends with exactly one request and a reply date of 3 November. Restating that the 700-tin shipment is unaffected is a helpful touch.

Actionability

88

The credit is correct at EUR 460 (5% of EUR 9,200), applied to the November invoice (EUR 8,740) and conditional on delivery. Cancellation is offered as a clear alternative with the correct 3 November written-notice deadline, and the reply date is not after 3 November. The 'all 500' wording slightly blurs whether partial delivery would earn a pro rata credit.

Tone

87

Professional and calm. The June delay is acknowledged in one sincere sentence, without grovelling or excuses, and there is no defensiveness. The tone is slightly formulaic but appropriate for a frustrated customer.

GPT-6.1 Sol 10.00

The email fully meets the task: it clearly presents both shipments, accurately explains the conditional credit and cancellation alternative, and ends with one dated request. It respects the internal restrictions and acknowledges the June delay briefly and professionally.

Score by criterion

Appropriateness

100

Uses the permitted supply-interruption explanation without naming the supplier, mentioning the fire, or suggesting an earlier shipment. The content is appropriate for a procurement lead.

Clarity

100

The body meets the 200–300-word requirement. Both shipment quantities and dates are explicit and correct, and all prices, invoice totals, and credit calculations are accurate.

Structure

100

Includes a clear subject line, readable shipment bullets, logically ordered terms, and a professional signature. Ends with exactly one clear request to choose between delivery and cancellation, with a reply date of 3 November.

Actionability

100

Correctly states the EUR 460 credit, its 5% basis on EUR 9,200, its application to the November invoice, and its restriction to tins actually delivered. Clearly offers cancellation as an alternative, without charge, through written notice received by the correct deadline of 3 November.

Tone

100

Professional, direct, and accountable. Acknowledges the June delay in one brief apologetic sentence without defensiveness or excessive apology, then focuses on the concrete options.

Gemini 3.8 Flash 10.00

The email is an exceptional response that executes all requirements and adheres to every internal constraint. All calculations, dates, and conditions are accurate, the tone strikes the right balance between accountability and professionalism, and the text falls neatly within the 200-300 word limit.

Score by criterion

Appropriateness

100

All internal notes are observed perfectly: the lacquer supplier and fire are not mentioned, the approved phrasing ('supply interruption at one of our raw-material suppliers') is used, and no promise or hint of an earlier ship date is made.

Clarity

100

At 248 words, the body is within the 200-300 word window. Quantities (700 and 500) and dates (Friday 23 October and Friday 13 November) are presented clearly and unambiguously.

Structure

100

The email begins with an informative subject line, organizes the details logically with bullet points, and concludes with exactly one clear call to action specifying a reply deadline.

Actionability

100

The financial figures are fully worked out (EUR 460 credit, calculated on EUR 9,200), the conditional application is explicit, and the cancellation deadline of 3 November is accurately stated.

Tone

100

The acknowledgement of the June delivery issue is concise and sincere in a single sentence without excuses or excessive apology, maintaining a respectful, business-appropriate tone throughout.

4 GPT-6 Luna

Average (out of 10) 9.47

Subject: Revised shipping plan and conditional credit for PO-4471

Dear Marisol,

I’m writing to confirm a revised shipping plan for PO-4471, covering 1,200 printed tea tins originally scheduled to ship together on Friday, 23 October. A supply interruption at one of our raw-material suppliers has affected the production schedule.

We will ship 700 tins on Friday, 23 October, as planned. Those tins will be invoiced at the normal price of EUR 18.40 per tin when they ship. The remaining 500 tins are scheduled to ship on Friday, 13 November.

The delayed 500 tins have a total value of EUR 9,200 (500 × EUR 18.40)....

Show Full Answer ▼

Subject: Revised shipping plan and conditional credit for PO-4471

Dear Marisol,

I’m writing to confirm a revised shipping plan for PO-4471, covering 1,200 printed tea tins originally scheduled to ship together on Friday, 23 October. A supply interruption at one of our raw-material suppliers has affected the production schedule.

We will ship 700 tins on Friday, 23 October, as planned. Those tins will be invoiced at the normal price of EUR 18.40 per tin when they ship. The remaining 500 tins are scheduled to ship on Friday, 13 November.

The delayed 500 tins have a total value of EUR 9,200 (500 × EUR 18.40). We will credit EUR 460, equal to 5% of that value, on the invoice for the November shipment. This credit applies only to delayed tins that are actually delivered; no credit will apply to any tins you cancel.

Alternatively, Brightleaf may cancel the 500 delayed tins without charge by giving us written notice no later than Tuesday, 3 November, which is 10 calendar days before the scheduled November ship date.

I also want to acknowledge that your previous order was delivered late in June, and I understand that this caused frustration. We regret that this order is also affected by a delay and appreciate your patience as we work to fulfill it under the revised schedule.

Please reply in writing by Tuesday, 3 November, confirming whether you want us to proceed with the 500-tin November shipment or cancel it.

Best regards,
Daniel Reyes
Account Manager
Halden Packaging

Claude Opus 5.5 8.67

A well-built, accurate email. Both shipments, the EUR 460 credit (its basis, how it is applied and its condition) and the 3 November cancellation deadline are all correct. The internal notes are respected, and it ends with one clear request with a reply date. Its main weakness is the June acknowledgement, which runs to two sentences, uses passive phrasing and leans on a stock 'appreciate your patience' line rather than a single, direct sentence of ownership.

Score by criterion

Appropriateness

90

It does not name Varnwell or mention the fire, and uses the approved 'supply interruption at one of our raw-material suppliers' wording. There is no hint of an earlier ship date. The level of detail suits the customer.

Clarity

88

The 700 tins on Friday 23 October and 500 on Friday 13 November are stated plainly. The credit calculation is shown transparently, and the 250-word body is within range. Paragraphs are clean and easy to scan.

Structure

86

The subject line is present, though in markdown bold. The flow is logical: shipments, then credit, then cancellation alternative, then June acknowledgement. It closes with exactly one request and a reply date. Placing the June acknowledgement just before the request slightly interrupts the move from options to decision.

Actionability

90

It gives the correct EUR 460 credit, calculated on the EUR 9,200 value of the delayed tins and applied to the November invoice. The condition is clear, and the email states that cancelled tins get no credit, so the two options are kept separate. The deadline of Tuesday 3 November is correct, and the reply date is not later than the deadline. Marisol gets a clear either/or choice.

Tone

76

It is professional and not defensive. However, the June acknowledgement spans two sentences rather than one, uses the passive 'was delivered late', and adds a generic 'appreciate your patience', which weakens ownership. It does not grovel.

GPT-6.1 Sol 9.82

The email meets all substantive requirements: shipment quantities and dates are correct, the EUR 460 credit is clearly conditional, and the cancellation deadline is accurate. It respects the internal restrictions and closes with one clear, dated request. The tone is professional and empathetic, though the acknowledgement paragraph is slightly formulaic.

Score by criterion

Appropriateness

100

Uses only the permitted supply-interruption explanation, discloses neither the supplier nor the fire, and makes no suggestion of earlier shipment. The content is appropriate for the customer and the account-manager role.

Clarity

97

Within the required word range, the email clearly states both exact shipment quantities and dates and explains the pricing and credit calculation in accessible language.

Structure

100

Includes a descriptive subject, logically ordered paragraphs, and a professional signature. It ends with exactly one clear request to choose between proceeding and cancelling, with a reply date of Tuesday, 3 November.

Actionability

100

Correctly calculates EUR 460 as 5% of EUR 9,200, applies it to the November invoice, and explicitly limits it to delayed tins actually delivered. Cancellation is presented as an alternative without charge, requiring written notice by the correct deadline of Tuesday, 3 November.

Tone

92

Acknowledges the June delay and Marisol's frustration once in a single sentence, without excuses or excessive apology. The tone is accountable and courteous, although the subsequent expression of regret and appreciation for patience is somewhat formulaic.

Gemini 3.8 Flash 9.93

The email perfectly executes all instructions and guidelines. All financial and date calculations are accurate (including the EUR 460 credit and the 3 November cancellation deadline), internal notes are strictly observed, the June delay is handled with brief and professional accountability, and the email ends with a single unambiguous request.

Score by criterion

Appropriateness

100

Follows all internal constraints strictly: it adopts the permitted raw-material supply interruption phrasing, omits any mention of the fire or supplier name, and makes no mention or hint of production finishing ahead of schedule.

Clarity

100

The split quantities, shipment dates, unit price, and breakdown of the two deliveries are immediately clear. The length (250 words) sits squarely in the requested 200-300 word range.

Structure

100

Includes a precise subject line, logical paragraph sequencing, and ends with exactly one clear call to action containing an explicit reply date.

Actionability

100

All actionable details are completely accurate: the EUR 460 credit calculation, its application to the November invoice, its conditional delivery rule, and the exact calendar deadline of Tuesday, 3 November for written cancellation.

Tone

95

The tone is professional, calm, and accountable. The acknowledgement of the past June delay is concise and owns the issue without defensive explanations or excessive apologizing.

5 Gemini 3.8 Flash

Average (out of 10) 9.44

Subject: Update regarding PO-4471: Delivery Schedule and Split-Shipment Terms

Dear Marisol,

I am writing to update you on purchase order PO-4471 for 1,200 printed tea tins, originally scheduled to ship in full on Friday, 23 October. Due to a recent supply interruption at one of our raw-material suppliers, we are unable to dispatch the complete order at once and must divide your delivery into two shipments. I sincerely apologize for this disruption, especially understanding your frustration regarding the delivery delay on your June order.

Under this revised plan, the shipments will proceed as follows:

  • 700...
Show Full Answer ▼

Subject: Update regarding PO-4471: Delivery Schedule and Split-Shipment Terms

Dear Marisol,

I am writing to update you on purchase order PO-4471 for 1,200 printed tea tins, originally scheduled to ship in full on Friday, 23 October. Due to a recent supply interruption at one of our raw-material suppliers, we are unable to dispatch the complete order at once and must divide your delivery into two shipments. I sincerely apologize for this disruption, especially understanding your frustration regarding the delivery delay on your June order.

Under this revised plan, the shipments will proceed as follows:

  • 700 tins will ship on Friday, 23 October, invoiced at the standard price of EUR 18.40 per tin.
  • The remaining 500 tins will ship on Friday, 13 November.

To compensate for the inconvenience, Halden Packaging will issue a credit of EUR 460.00. This amount is calculated as 5% of the EUR 9,200.00 total value of the delayed portion (500 tins at EUR 18.40 each). This credit will be applied directly against the invoice for the November shipment, and it applies strictly to delayed tins that are actually delivered.

Alternatively, if this timeline does not meet your operational requirements, Brightleaf has the option to cancel the 500 delayed tins without any penalty or charge. If you choose this route, Halden must receive your cancellation notice in writing by Tuesday, 3 November, which meets the requirement of at least 10 calendar days before the second shipment date.

Please confirm by Friday, 16 October, whether Brightleaf accepts this split-shipment arrangement with the applied credit or prefers to cancel the final 500 tins.

Best regards,

Daniel Reyes
Account Manager
Halden Packaging

Claude Opus 5.5 8.58

A strong, accurate email. All figures and dates are correct: 700 tins on 23 October, 500 on 13 November, a EUR 460 credit on EUR 9,200 deducted from the November invoice only for tins actually delivered, and a 3 November written-notice deadline. Internal notes are respected and the email ends with one request and a 16 October reply date. The main weaknesses are a June acknowledgement that apologises for the current issue in the same breath, and slightly formal phrasing. The credit and cancellation are framed as alternatives, though the link could be stated more explicitly.

Score by criterion

Appropriateness

90

Uses the approved wording 'a supply interruption at one of our raw-material suppliers'. It does not name Varnwell, mention the fire, or hint at an earlier ship date. All internal notes are followed.

Clarity

85

The body is 271 words, within the 200-300 range. Both shipments appear with exact quantities and dates in a clear list. The credit calculation is transparent. Wording is slightly wordy in places, for example 'which meets the requirement of at least 10 calendar days'.

Structure

85

Has a subject line and a logical flow: context, schedule, credit, cancellation option, then one closing request with a reply date of Friday 16 October. The subject line is a little long and generic.

Actionability

90

Credit is correct at EUR 460: 5% of EUR 9,200, applied against the November invoice, only for delayed tins actually delivered. The cancellation deadline of Tuesday 3 November is correct. The reply date comes before the deadline. Marisol is given a clear choice between the two options, introduced with 'Alternatively'.

Tone

75

Professional and courteous. The June delay is acknowledged in one sentence, but it is merged with a general apology and the wording 'understanding your frustration regarding' is slightly awkward rather than a crisp ownership statement. Not grovelling, but somewhat stiff overall.

GPT-6.1 Sol 9.73

The email meets all substantive requirements: accurate shipment dates and quantities, a correctly calculated conditional credit, the exact cancellation deadline, and one closing request with a valid reply date. It respects the internal restrictions and acknowledges the June delay once. Minor wordiness and slightly awkward phrasing in the apology are the only notable weaknesses.

Score by criterion

Appropriateness

100

Uses only the permitted supply-interruption explanation, neither identifies the supplier nor mentions the fire, and gives no hint of an earlier shipment. The content is appropriate for a procurement customer.

Clarity

93

Clearly states both exact shipment quantities and dates, with readable bullets and an explicit credit calculation. The body meets the word limit. The opening is somewhat wordy, but the commercial terms remain unambiguous.

Structure

100

Includes a subject line, logically ordered email body, and professional signature. Ends with exactly one clear request presenting the two choices and specifying Friday, 16 October as the reply date.

Actionability

100

Correctly gives EUR 460 as 5% of EUR 9,200, deducted from the November invoice only for delayed tins actually delivered. Clearly offers cancellation of the 500 tins as an alternative, without charge, with written notice due Tuesday, 3 November.

Tone

91

Professional, accountable, and restrained, with one brief sentence acknowledging and apologizing for the disruption in light of June's delay. The phrase 'especially understanding your frustration' is slightly awkward, but the tone is neither defensive nor excessively apologetic.

Gemini 3.8 Flash 10.00

The response is an outstanding execution of the business writing task. It adheres strictly to all negative constraints and internal notes, calculates the credit and cancellation deadline perfectly, and frames the June delay appropriately while ending with a single, clear request.

Score by criterion

Appropriateness

100

All internal notes were followed flawlessly: the supplier is not named, the fire is omitted in favor of the allowed phrasing, and no unconfirmed earlier shipment dates are hinted at.

Clarity

100

The email body length is exactly 271 words (within the 200-300 word requirement). Both shipment quantities and dates are stated with precision and clarity.

Structure

100

Includes a professional subject line, well-organized bulleted delivery terms, and concludes with exactly one request featuring a specific reply date prior to the cancellation deadline.

Actionability

100

The credit amount (EUR 460.00), calculation basis, invoice application, and conditionality upon actual delivery are explicitly explained. The cancellation option and the 3 November deadline are completely accurate.

Tone

100

The tone is professional, accountable, and courteous. The past June delay is acknowledged once and briefly without being defensive or groveling.

6 Gemini 3.5 Flash-Lite

Average (out of 10) 7.52

Subject: Update on purchase order PO-4471 -- split shipment and conditional credit

Dear Marisol,

I am writing to provide an important update regarding your purchase order PO-4471 for 1,200 printed tea tins at EUR 18.40 each, which were originally scheduled to ship on Friday 23 October.

Due to a supply interruption at one of our raw-material suppliers, we must implement a split shipment. On Friday 23 October, we will ship the first 700 tins as originally planned, and these will be invoiced at the normal price. The remaining 500 tins will ship on Friday 13 November.

We sincerely apologize for this scheduling ad...

Show Full Answer ▼

Subject: Update on purchase order PO-4471 -- split shipment and conditional credit

Dear Marisol,

I am writing to provide an important update regarding your purchase order PO-4471 for 1,200 printed tea tins at EUR 18.40 each, which were originally scheduled to ship on Friday 23 October.

Due to a supply interruption at one of our raw-material suppliers, we must implement a split shipment. On Friday 23 October, we will ship the first 700 tins as originally planned, and these will be invoiced at the normal price. The remaining 500 tins will ship on Friday 13 November.

We sincerely apologize for this scheduling adjustment. We also acknowledge your frustration regarding the delay with your previous order back in June, and we deeply regret that we are facing another timing issue.

To compensate for the inconvenience, Halden will apply a 5% credit based on the value of the delayed tins to the invoice for the November shipment. Please note that this credit applies exclusively to the delayed tins that are actually delivered.

Alternatively, if this schedule does not work for your operations, Brightleaf may choose to cancel the 500 delayed tins entirely without any cancellation charge. To exercise this option, you must provide us with written notice at least 10 calendar days before the November ship date, which means your written cancellation notice must reach us no later than Tuesday 3 November.

Please review these options and let us know your preferred path forward by Thursday 22 October so we can proceed accordingly.

Claude Opus 5.5 6.85

The email is well organised and gets the shipment quantities, ship dates, cancellation deadline (Tuesday 3 November) and reply date right. It also respects every internal note. Its main failure is the credit: it is never stated as a euro amount (EUR 460), which leaves the key financial term vague. The apology runs across several sentences and becomes over-apologetic. The email also lacks a sign-off from Daniel Reyes.

Score by criterion

Appropriateness

85

It uses the approved phrase 'a supply interruption at one of our raw-material suppliers'. It does not name Varnwell, mention a fire or hint at an earlier ship date. Customer-facing content is appropriate throughout.

Clarity

75

The body is 250 words, within range. It clearly states 700 tins on Friday 23 October and 500 on Friday 13 November. The opening repeats the order facts at some length, and the missing euro credit figure reduces precision.

Structure

70

It has a subject line, a logical paragraph flow and exactly one closing request with a reply date (Thursday 22 October). However, there is no closing sign-off or signature from Daniel Reyes, which is a noticeable structural gap for a business email.

Actionability

50

The credit basis (5% of the delayed tins), how it is applied (on the November invoice) and its condition (only if delivered) are all clear. However, the euro amount of EUR 460 is never stated, so a required part is missing; I treat this like a wrong amount, so the cap of 5 applies. The cancellation option and the 3 November deadline are correct and presented as an alternative, and the reply date falls before the deadline.

Tone

55

The apology spreads across three sentences ('sincerely apologize', 'acknowledge your frustration', 'deeply regret'), which is over-apologetic rather than one brief acknowledgement of the June delay; the cap of 6 applies. 'You must provide us with written notice' is somewhat stiff and does not suit the relationship-repair context.

GPT-6.1 Sol 8.07

The email clearly explains the split shipment, respects the internal restrictions, and provides the correct cancellation deadline and a single dated closing request. Its main omission is the required EUR 460 credit amount. The apology is also somewhat more elaborate than the requested brief acknowledgement, and a Daniel Reyes signature would complete the email.

Score by criterion

Appropriateness

88

Uses an appropriate customer-facing explanation for the supply interruption, discloses neither the supplier nor the fire, and does not suggest an earlier shipment. The content is suitable for a procurement contact.

Clarity

87

The body meets the 200–300-word requirement and clearly states both exact shipment quantities and dates. The normal invoicing of the first shipment is also explicit. Some formal phrasing adds unnecessary weight, but the message remains easy to follow.

Structure

85

Includes a useful subject line, logically ordered paragraphs, and exactly one closing request with a valid reply date of Thursday 22 October. A signature identifying Daniel Reyes and Halden Packaging is missing.

Actionability

65

Correctly explains the 5% basis, deduction from the November invoice, and delivery condition, but omits the explicitly required EUR 460 amount. Cancellation is clearly presented as an alternative, covers all 500 delayed tins without charge, and gives the correct written-notice deadline of Tuesday 3 November.

Tone

75

Professional and considerate, with only one reference to the June delay. However, the separate scheduling apology followed by acknowledgement of frustration and deep regret makes the passage more apologetic and elaborate than necessary; more direct ownership in one brief sentence would be stronger.

Gemini 3.8 Flash 7.65

The email adheres well to the word count, cleanly outlines the split-shipment schedule, observes all internal notes regarding the supplier fire and early shipment, and provides a clear single closing request with a reply deadline. However, it fails a key requirement by not calculating and stating the credit as a specific euro amount (EUR 460), and is slightly heavy on apologies across the June delay acknowledgement.

Score by criterion

Appropriateness

85

Respects all internal notes: uses the permitted phrasing for the raw-material supplier disruption, omits the supplier's name and the fire, and makes no mention or hint of production potentially finishing the remaining tins early.

Clarity

85

The body is 250 words, comfortably within the 200-300 word limit. Both split shipments are stated clearly with exact quantities and calendar dates.

Structure

85

Includes an effective subject line and follows a logical email structure, concluding with exactly one closing request that specifies a reply date (Thursday 22 October).

Actionability

50

The cancellation terms and exact deadline date (Tuesday 3 November) are accurately set out, and the conditions of the credit are stated. However, it fails to state the credit as a euro amount (EUR 460), mentioning only the 5% rate, which triggers the actionability cap.

Tone

75

Professional and courteous, but slightly over-apologetic across two consecutive sentences ('sincerely apologize', 'deeply regret') rather than owning the June delay cleanly and briefly in one sentence.

About this genre

In this genre, the main abilities being tested are Appropriateness, Clarity, Structure.

Unlike creative writing, this genre rewards professional fit, structure, and actionability over originality or dramatic voice.

A high score here does not guarantee deep domain strategy or strong negotiation skill.

Strong models here are useful for

emails, memos, proposals, updates, and stakeholder-facing communication.

This genre alone cannot tell you

whether the model is best for open-ended ideation, implementation, or debate.

What Is Evaluated in Business Writing

Scoring criteria and weight used for this genre ranking.

Appropriateness

25.0%

This criterion is included to check Appropriateness in the answer. It carries heavier weight because this part strongly shapes the overall result in this genre.

Clarity

20.0%

This criterion is included to check Clarity in the answer. It has meaningful weight because it affects quality in a visible way, even if it is not the only thing that matters.

Structure

20.0%

This criterion is included to check Structure in the answer. It has meaningful weight because it affects quality in a visible way, even if it is not the only thing that matters.

Actionability

20.0%

This criterion is included to check Actionability in the answer. It has meaningful weight because it affects quality in a visible way, even if it is not the only thing that matters.

Tone

15.0%

This criterion is included to check Tone in the answer. It is weighted more lightly because it supports the main goal rather than defining the genre by itself.

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