GPT-5vsClaude Opus 4
GPT-5 and Claude Opus 4 are tied across 8 shared benchmarks: GPT-5 leads on 4, Claude Opus 4 leads on 4, with 0 ties and an average score difference of +9.74.
GPT-5
OpenAI · 2025-08-07 · Foundation model
Claude Opus 4
Anthropic · 2025-05-23 · Reasoning model
GPT-54 wins(50%)(50%)4 winsClaude Opus 4
Benchmark scores
Grouped by capability, sorted by largest gap within each. 8 shared benchmarks.
Math and Reasoning
GPT-5 2/3| Benchmark | GPT-5 | Claude Opus 4 | Diff |
|---|---|---|---|
| IMO-ProofBench | 592 / 16Thinking (No Tools) | 2.9016 / 16Thinking (No Tools) | +56.10 |
| IMO-ProofBench Advanced | 209 / 19Thinking (No Tools) | 2.9019 / 19Thinking (No Tools) | +17.10 |
| AIME2025 | 61.9081 / 107Normal (No Tools) | 75.5066 / 107Normal (No Tools) | -13.60 |
General Knowledge
Claude Opus 4 2/2| Benchmark | GPT-5 | Claude Opus 4 | Diff |
|---|---|---|---|
| ARC-AGI-1 | 688 / 92Normal (No Tools) | 35.7075 / 92Normal (No Tools) | -29.70 |
| HLE | 6.30186 / 197Normal (No Tools) | 10.70168 / 197Normal (No Tools) | -4.40 |
Agent Level Benchmark
GPT-5 1/1| Benchmark | GPT-5 | Claude Opus 4 | Diff |
|---|---|---|---|
| τ²-Bench | 8015 / 44Thinking (With Tools) | 72.5024 / 44Thinking (With Tools) | +7.50 |
General Evaluation
Claude Opus 4 1/1| Benchmark | GPT-5 | Claude Opus 4 | Diff |
|---|---|---|---|
| GPQA Diamond | 77.80159 / 274Normal (No Tools) | 79.60151 / 274Normal (No Tools) | -1.80 |
Writing and Creative Capabilities
GPT-5 1/1| Benchmark | GPT-5 | Claude Opus 4 | Diff |
|---|---|---|---|
| Creative Writing | 1,62436 / 106Normal (No Tools) | 1,57741 / 106Normal (No Tools) | +46.70 |
Specs
| Field | GPT-5 | Claude Opus 4 |
|---|---|---|
| Publisher | OpenAI | Anthropic |
| Release date | 2025-08-07 | 2025-05-23 |
| Model type | Foundation 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 | 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
- GPT-5leads in:Math and Reasoning (2/3), Agent Level Benchmark (1/1), Writing and Creative Capabilities (1/1)
- Claude Opus 4leads in:General Knowledge (2/2), General Evaluation (1/1)
On average across the 8 shared benchmarks, GPT-5 scores 9.74 higher.
Largest single-benchmark gap: IMO-ProofBench — GPT-5 59 vs Claude Opus 4 2.90 (+56.10).
Page generated from structured model, pricing and benchmark records. No real-time LLM is used to write the prose.