GPT-5.1vsClaude Opus 4
Across 5 shared benchmarks, Claude Opus 4 leads overall: GPT-5.1 wins 1, Claude Opus 4 wins 4, with 0 ties and an average score difference of -11.18.
GPT-5.1
OpenAI · 2025-11-12 · Reasoning model
Claude Opus 4
Anthropic · 2025-05-23 · Reasoning model
GPT-5.11 win(20%)(80%)4 winsClaude Opus 4
Benchmark scores
Grouped by capability, sorted by largest gap within each. 5 shared benchmarks.
Math and Reasoning
Even 2/2| Benchmark | GPT-5.1 | Claude Opus 4 | Diff |
|---|---|---|---|
| AIME2025 | 38170 / 215Normal (No Tools) | 75.50106 / 215Normal (No Tools) | -37.50 |
| IMO-ProofBench Advanced | 7.1016 / 24Thinking (No Tools) | 2.9024 / 24Thinking (No Tools) | +4.20 |
Coding and Software Engineer
Claude Opus 4 1/1| Benchmark | GPT-5.1 | Claude Opus 4 | Diff |
|---|---|---|---|
| LiveCodeBench | 49.40167 / 250Normal (No Tools) | 56.60143 / 250Normal (No Tools) | -7.20 |
General Evaluation
Claude Opus 4 1/1| Benchmark | GPT-5.1 | Claude Opus 4 | Diff |
|---|---|---|---|
| GPQA Diamond | 64.30361 / 462Normal (No Tools) | 79.60241 / 462Normal (No Tools) | -15.30 |
Instruction Following
Claude Opus 4 1/1| Benchmark | GPT-5.1 | Claude Opus 4 | Diff |
|---|---|---|---|
| IF Bench | 43.20192 / 282Normal (No Tools) | 43.30191 / 282Normal (No Tools) | -0.10 |
Specs
| Field | GPT-5.1 | Claude Opus 4 |
|---|---|---|
| Publisher | OpenAI | Anthropic |
| Release date | 2025-11-12 | 2025-05-23 |
| Model type | Reasoning model | Reasoning model |
| Architecture | Dense | Dense |
| Parameters | Not available | Not available |
| Context length | 400K | 200K |
| Max output | 128K | 32K |
API pricing
Prices use DataLearner records when available; missing fields are not inferred.
| Item | GPT-5.1 | Claude Opus 4 |
|---|---|---|
| Text input | $1.25 / 1M tokens | $15 / 1M tokens |
| Text output | $10 / 1M tokens | $75 / 1M tokens |
| Cache read | $0.125 / 1M tokens | $1.5 / 1M tokens |
| Cache write | $0 / 1M tokens | $18.75 / 1M tokens |
Summary
- Claude Opus 4leads in:Coding and Software Engineer (1/1), General Evaluation (1/1), Instruction Following (1/1)
- Tied in:Math and Reasoning
On average across the 5 shared benchmarks, Claude Opus 4 scores 11.18 higher.
Largest single-benchmark gap: AIME2025 — GPT-5.1 38 vs Claude Opus 4 75.50 (-37.50).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.