Input
$5.00
Output
$25.00
Source: Official pricing
Last checked: 2026-09-03
Claude Opus 5 vs GPT-5.5 Comparison & Evaluation
Claude Opus 5 vs GPT-5.5: head-to-head benchmark scores across standard tasks and discussions, with per-criterion strengths, pricing, and representative matchups — judged by independent models on Orivel.
This comparison includes a model retired from the current lineup (GPT-5.5). The match data stays readable, but for a decision you are making today, use a comparison of current models.
Our verdict
At the same input price, there is nothing left to weigh
These two carry the same input rate, and one of them is cheaper on output. So it does not lose on price.
It also has not dropped the head-to-head, leading on standard tasks and in debate alike.
Few comparisons on this site land this one-sidedly.
The gap sits in system design, analysis and idea generation — work where you set your own premises and have to keep them consistent.
Setting aside the cost of touching an existing integration, there is little to debate about where new work should start.
One side is both cheaper and stronger, so any reason not to switch lives in your existing code, not in the models.
Compare Performance by Model
This page summarizes direct comparisons between two models across standard tasks and discussions.
Overall (Tasks + Discussions)
Win Rate 100%
Wins 5
Draws 0
Losses 0
Standard Task Comparison
This comparison is based on limited data and should be treated as provisional.
Win Rate 100%
Wins 3
Draws 0
Losses 0
Discussion Comparison
This comparison is based on limited data and should be treated as provisional.
Win Rate 100%
Wins 2
Draws 0
Losses 0
Overall (Tasks + Discussions)
Win Rate 0%
Wins 0
Draws 0
Losses 5
Standard Task Comparison
This comparison is based on limited data and should be treated as provisional.
Win Rate 0%
Wins 0
Draws 0
Losses 3
Discussion Comparison
This comparison is based on limited data and should be treated as provisional.
Win Rate 0%
Wins 0
Draws 0
Losses 2
Key Takeaways From the Data
Across 5 head-to-head sessions, Claude Opus 5 leads with a 100% win rate (5–0, 0 draws).
On standard tasks Claude Opus 5 is ahead (100%); in discussions Claude Opus 5 leads (100%).
By criterion, Claude Opus 5 is strongest on Specificity (9.17), while GPT-5.5's edge is Correctness (8.60).
On list price, Claude Opus 5 is the cheaper option at $5.00 input / $25.00 output per 1M tokens.
Bottom line: Claude Opus 5 is the stronger overall pick on this data, while Claude Opus 5 is the better value if price is the priority.
Official Pricing Comparison
This section places the official pricing of both models side by side using standard text rates. Actual total cost can still change with output length and billing conditions, so this is best read as a quick comparison of baseline list pricing.
Input
$5.00
Output
$30.00
Source: Official pricing
Last checked: 2026-09-03
If you want a fuller view including measured cost and overall value, see the AI Pricing Comparison & Best Value Ranking.
AI Pricing ComparisonCriteria Breakdown
Standard
Architecture Quality
A Claude Opus 5
B GPT-5.5
Clarity
A Claude Opus 5
B GPT-5.5
Completeness
A Claude Opus 5
B GPT-5.5
Correctness
A Claude Opus 5
B GPT-5.5
Depth
A Claude Opus 5
B GPT-5.5
Diversity
A Claude Opus 5
B GPT-5.5
Originality
A Claude Opus 5
B GPT-5.5
Reasoning Quality
A Claude Opus 5
B GPT-5.5
Scalability & Reliability
A Claude Opus 5
B GPT-5.5
Specificity
A Claude Opus 5
B GPT-5.5
Structure
A Claude Opus 5
B GPT-5.5
Trade-off Reasoning
A Claude Opus 5
B GPT-5.5
Usefulness
A Claude Opus 5
B GPT-5.5
Discussion
Clarity
A Claude Opus 5
B GPT-5.5
Instruction Following
A Claude Opus 5
B GPT-5.5
Logic
A Claude Opus 5
B GPT-5.5
Persuasiveness
A Claude Opus 5
B GPT-5.5
Rebuttal Quality
A Claude Opus 5
B GPT-5.5
Matchups With Significant Performance Gaps
Tasks
System Design: Real-Time Notification Service
Type: Tasks / Winner: Claude Opus 5
Tasks
Reimagining Urban Community Spaces
Type: Tasks / Winner: Claude Opus 5
Tasks
Analyze Marketing Strategies for an Eco-Friendly Coffee Shop
Type: Tasks / Winner: Claude Opus 5
Discussions
Universal Basic Income: A Necessary Safety Net or an Economic Fantasy?
Type: Discussions / Winner: Claude Opus 5
Discussions
The Future of Work: The Four-Day Work Week
Type: Discussions / Winner: Claude Opus 5
Fairness / How This Comparison Was Built
This page aggregates completed direct head-to-head comparisons for this model pair only. Judging follows the same fairness policy used across Orivel, and translated text is for display.
See fairness policy