GPT-5.1vsGPT-5
Across 23 shared benchmarks, GPT-5 leads overall: GPT-5.1 wins 8, GPT-5 wins 13, with 2 ties and an average score difference of -6.28.
GPT-5.18 wins(35%)Ties2(57%)13 winsGPT-5
Benchmark scores
Grouped by capability, sorted by largest gap within each. 23 shared benchmarks.
Coding and Software Engineer
GPT-5.1 4/6| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| SWE-Bench Pro - Public | 50.8046 / 62Thinking High (No Tools) | 36.3059 / 62Thinking High (No Tools) | +14.50 |
| Text Arena (Coding) | 1,38732 / 35Thinking Medium (No Tools) | 1,39529 / 35Thinking Medium (No Tools) | -8 |
| GSO | 13.7013 / 21Thinking High (With Tools) | 6.9016 / 21Thinking High (With Tools) | +6.80 |
| LiveCodeBench | 49.40167 / 250Normal (No Tools) | 55.80149 / 250Normal (No Tools) | -6.40 |
| SWE-bench Verified | 76.3034 / 116Thinking High (No Tools) | 72.8051 / 116Thinking High (No Tools) | +3.50 |
| WeirdML v2 | 60.7728 / 52Thinking High (With Tools) | 60.7029 / 52Thinking High (With Tools) | +0.07 |
Math and Reasoning
GPT-5 2/5| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| AIME2025 | 38170 / 215Normal (No Tools) | 61.90135 / 215Normal (No Tools) | -23.90 |
| IMO-ProofBench Advanced | 7.1016 / 24Thinking (No Tools) | 2011 / 24Thinking (No Tools) | -12.90 |
| FrontierMath | 26.7013 / 60Thinking High (With Tools) | 26.3014 / 60Thinking High (With Tools) | +0.40 |
| FrontierMath - Tier 4 | 12.5029 / 80Thinking High (No Tools) | 12.5029 / 80Thinking High (No Tools) | — |
| MathArena Apex | 1.0414 / 17Thinking High (With Tools) | 1.0414 / 17Thinking High (With Tools) | — |
Agent Level Benchmark
GPT-5 2/3| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| τ²-Bench - Telecom | 46.50178 / 264Normal (With Tools) | 67144 / 264Normal (With Tools) | -20.50 |
| τ³-Banking | 15.90103 / 164Thinking High (With Tools) | 22.1085 / 164Thinking High (With Tools) | -6.20 |
| Terminal Bench Hard | 22.70143 / 244Normal (With Tools) | 18.20154 / 244Normal (With Tools) | +4.50 |
General Knowledge
GPT-5 2/2| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| HLE | 5.30471 / 563Normal (No Tools) · Text only | 6.60450 / 563Normal (No Tools) · Text only | -1.30 |
| CritPt | 4.9098 / 200Thinking High (No Tools) | 5.7088 / 200Thinking High (No Tools) | -0.80 |
Multimodal Understanding
Even 2/2| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| VPCT | 58.707 / 24Thinking High (No Tools) | 665 / 24Thinking High (No Tools) | -7.30 |
| MMMU-Pro | 62.40163 / 227Normal (No Tools) | 62.10165 / 227Normal (No Tools) | +0.30 |
AI Agent - Tool Usage
GPT-5.1 1/1| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| Terminal-Bench 2.1 | 52.40126 / 192Thinking High (With Tools) | 35.20151 / 192Thinking High (With Tools) | +17.20 |
Commonsense Reasoning
GPT-5 1/1| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| SimpleBench | 53.2045 / 93Thinking High (No Tools) | 56.7040 / 93Thinking High (No Tools) | -3.50 |
General Evaluation
GPT-5 1/1| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| GPQA Diamond | 64.30361 / 462Normal (No Tools) | 77.80257 / 462Normal (No Tools) | -13.50 |
Instruction Following
GPT-5 1/1| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| IF Bench | 43.20192 / 282Normal (No Tools) | 45.60178 / 282Normal (No Tools) | -2.40 |
Productivity Knowledge
GPT-5 1/1| Benchmark | GPT-5.1 | GPT-5 | Diff |
|---|---|---|---|
| GDPval-AA v2 | 93093 / 105Thinking High (With Tools) | 1,01589 / 105Thinking High (With Tools) | -85 |
Specs
| Field | GPT-5.1 | GPT-5 |
|---|---|---|
| Publisher | OpenAI | OpenAI |
| Release date | 2025-11-12 | 2025-08-07 |
| Model type | Reasoning model | Foundation model |
| Architecture | Dense | Dense |
| Parameters | Not available | Not available |
| Context length | 400K | 400K |
| Max output | 128K | 128K |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | GPT-5.1 | GPT-5 |
|---|---|---|
| Text input | $1.25 / 1M tokens | $1.25 / 1M tokens |
| Text output | $10 / 1M tokens | $10 / 1M tokens |
| Cache read | $0.125 / 1M tokens | $0.125 / 1M tokens |
| Cache write | $0 / 1M tokens | $0 / 1M tokens |
Summary
- GPT-5.1leads in:Coding and Software Engineer (4/6), AI Agent - Tool Usage (1/1)
- GPT-5leads in:Math and Reasoning (2/5), Agent Level Benchmark (2/3), General Knowledge (2/2), Commonsense Reasoning (1/1), General Evaluation (1/1), Instruction Following (1/1), Productivity Knowledge (1/1)
- Tied in:Multimodal Understanding
On average across the 23 shared benchmarks, GPT-5 scores 6.28 higher.
Largest single-benchmark gap: GDPval-AA v2 — GPT-5.1 930 vs GPT-5 1,015 (-85).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.