Compare / head-to-head
Claude Opus 4.1vsGPT-5
GPT-5 leads 6 of 6 shared benchmarks. GPT-5 is 8x cheaper per token. GPT-5 has the larger context window (400K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 6
GPT-5 leads
Cheaper per token
GPT-5
8x cheaper, input + output
Larger context
GPT-5
400K tokens
Provider uptime (30d)
100% · 95.3623%
Anthropic · OpenAI
Claude Opus 4.1
Anthropic · released 2025-08-05
textvision
Quality
Benchmark matrix
6 shared · 0 only Claude Opus 4.1 · 2 only GPT-5| Benchmark | Claude Opus 4.1 | GPT-5 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 6 | ||||
| SWE-bench Verified | 74.5% ↗ | 74.9% ↗ | -0.4 pt | GPT-5 |
| GPQA Diamond | 77.3% ↗epoch | 86.2% ↗epoch | -8.9 pt | GPT-5 |
| FrontierMath Tier 4 v2 (Epoch AI run) | 2.4% ↗epoch | 22% ↗epoch | -19.6 pt | GPT-5 |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 12.6% ↗epoch | 55.4% ↗epoch | -42.8 pt | GPT-5 |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 68.9% ↗epoch | 91.4% ↗epoch | -22.5 pt | GPT-5 |
| SWE-bench Verified (Epoch AI run) | 73.3% ↗epoch | 73.6% ↗epoch | -0.3 pt | GPT-5 |
| Only Claude Opus 4.1 reports · 0 | ||||
| Claude Opus 4.1 reports nothing GPT-5 does not. | ||||
| Only GPT-5 reports · 2 | ||||
| AIME 2025 | not reported | 94.6% ↗ | — | — |
| SimpleQA Verified | not reported | 50.1% ↗epoch | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude Opus 4.1 minus GPT-5 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Claude Opus 4.1 | GPT-5 | Edge |
|---|---|---|---|
| Context window | 200K tokens | 400K tokens | GPT-5 |
| Max output | 32K tokens | 128K tokens | GPT-5 |
| Input price / 1M | $15 ↗ | $1.25 ↗ | GPT-5 |
| Output price / 1M | $75 ↗ | $10 ↗ | GPT-5 |
| Cached input / 1M | $1.5 ↗ | $0.125 ↗ | GPT-5 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $90 | $11.25 | GPT-5 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2025-08-05 | 2025-08-07 | — |
| Cited benchmark scores | 6 | 9 | — |
Reliability
Provider status
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Claude Opus 4.1 vs …
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Which one wins on your data?
Public benchmarks are a starting point. Run Claude Opus 4.1 and GPT-5 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.