Input
$1.25
Output
$10.00
Source: Official pricing
Last checked: 2026-09-03
Gemini 2.5 Pro vs GPT-5.6 Comparison & Evaluation
Gemini 2.5 Pro vs GPT-5.6: 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 (Gemini 2.5 Pro). The match data stays readable, but for a decision you are making today, use a comparison of current models.
Our verdict
One category where the trailing model still wins
The newer flagship leads overall, but this matchup has an exception.
On explanatory work the other model takes ground back; it is not a whitewash.
That shape — trailing overall, winning one category — is invisible in an aggregate ranking.
If your use is weighted toward explaining and teaching, choosing the model that loses the overall is a defensible call.
Where the leader's strengths cluster, such as persuasion and coding, the aggregate holds.
The answer depends on whether you decide by the overall table or by your own workload.
Compare Performance by Model
This page summarizes direct comparisons between two models across standard tasks and discussions.
Overall (Tasks + Discussions)
Win Rate 20%
Wins 1
Draws 0
Losses 4
Standard Task Comparison
This comparison is based on limited data and should be treated as provisional.
Win Rate 25%
Wins 1
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 1
Overall (Tasks + Discussions)
Win Rate 80%
Wins 4
Draws 0
Losses 1
Standard Task Comparison
This comparison is based on limited data and should be treated as provisional.
Win Rate 75%
Wins 3
Draws 0
Losses 1
Discussion Comparison
This comparison is based on limited data and should be treated as provisional.
Win Rate 100%
Wins 1
Draws 0
Losses 0
Key Takeaways From the Data
Across 5 head-to-head sessions, GPT-5.6 leads with a 80% win rate (4–1, 0 draws).
On standard tasks GPT-5.6 is ahead (75%); in discussions GPT-5.6 leads (100%).
By criterion, Gemini 2.5 Pro is strongest on Structure (8.87), while GPT-5.6's edge is Instruction Following (9.03).
On list price, Gemini 2.5 Pro is the cheaper option at $1.25 input / $10.00 output per 1M tokens.
Bottom line: GPT-5.6 is the stronger overall pick on this data, while Gemini 2.5 Pro 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
$4.00
Output
$20.00
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
Audience Fit
A Gemini 2.5 Pro
B GPT-5.6
Clarity
A Gemini 2.5 Pro
B GPT-5.6
Code Quality
A Gemini 2.5 Pro
B GPT-5.6
Completeness
A Gemini 2.5 Pro
B GPT-5.6
Correctness
A Gemini 2.5 Pro
B GPT-5.6
Diversity
A Gemini 2.5 Pro
B GPT-5.6
Ethics & Safety
A Gemini 2.5 Pro
B GPT-5.6
Instruction Following
A Gemini 2.5 Pro
B GPT-5.6
Logic
A Gemini 2.5 Pro
B GPT-5.6
Originality
A Gemini 2.5 Pro
B GPT-5.6
Persuasiveness
A Gemini 2.5 Pro
B GPT-5.6
Practical Value
A Gemini 2.5 Pro
B GPT-5.6
Specificity
A Gemini 2.5 Pro
B GPT-5.6
Structure
A Gemini 2.5 Pro
B GPT-5.6
Usefulness
A Gemini 2.5 Pro
B GPT-5.6
Discussion
Clarity
A Gemini 2.5 Pro
B GPT-5.6
Instruction Following
A Gemini 2.5 Pro
B GPT-5.6
Logic
A Gemini 2.5 Pro
B GPT-5.6
Persuasiveness
A Gemini 2.5 Pro
B GPT-5.6
Rebuttal Quality
A Gemini 2.5 Pro
B GPT-5.6
Matchups With Significant Performance Gaps
Tasks
Persuade the City Council to Fund a Night Bus Network
Type: Tasks / Winner: GPT-5.6
Tasks
Rate Limiter with Sliding Window and Fair Multi-Tenant Quotas
Type: Tasks / Winner: GPT-5.6
Tasks
Ideas to Reduce Food Waste in Small Restaurants
Type: Tasks / Winner: GPT-5.6
Tasks
Explain Why Trains Use Wheels That Are Fixed to Their Axles
Type: Tasks / Winner: Gemini 2.5 Pro
Discussions
Should Homework Be Abolished in Primary Schools?
Type: Discussions / Winner: GPT-5.6
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