Claude Opus 4.5 vs GPT-5
Head to head on 23 shared benchmarks, with price, context window, and release dates.
Benchmark scores
80evals · sort by any column, ⤢ to expand fullscreen
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| Claude Opus 4.5 Anthropic | 91.3% | 61.3% | 1687elo | 73.1 | 20.7% | 84.7% | 86.6% | 30.1% | 58.0% | 83.5% | 87.1% | 45.2% | 83.2% | 89.5% | 68.7% | 36.0% | 45.0% | 49.5% | 79.2% | 74.3% | 47.0% | 20.6% | 89.5% | - | - | - | - | - | - | - | 16.7% | - | - | 35.6% | 6.1% | - | - | - | - | - | - | - | 12.13 | - | 83.8% | - | 78.1% | 79.7% | 74.4% | 62.5% | 81.3% | 90.4% | 80.1% | - | - | - | - | - | - | - | - | - | - | - | - | - | 100.0% | 37.4 | - | 77.5% | 45.3 | - | 70.7% | - | 61.8 | - | - | - | - | - | 64.8% |
| GPT-5 OpenAI | 94.3% | 61.1% | 1627elo | 72.8 | 32.4% | 83.3% | 85.4% | 28.5% | 73.1% | 83.4% | 84.6% | 49.6% | 83.7% | 87.1% | 65.5% | 18.0% | 43.7% | 42.9% | 74.4% | 73.4% | 32.6% | 20.1% | 84.8% | 46.7% | 91.1% | 88.0% | 94.6% | 0.0% | 0.15 | 0.0% | - | 68.1% | 4.58 | - | - | 57.7% | 80.0% | 80.0% | 91.7% | 0.0% | 88.9% | 100.0% | - | 48.9% | - | 58.2% | - | - | - | - | - | - | - | 37.5% | 0.52 | 1.62 | 100.0% | 99.4% | 0.0% | 92.7% | 92.7% | 93.3% | 10.0% | 0.0% | 60.0% | 0.26 | - | - | 0.0% | - | - | 74.9% | - | 2.34 | - | 87.5% | 0.86 | 54.8% | 90.0% | 90.0% | 61.9% |
2 / 2 models
| Attribute | Claude Opus 4.5 Anthropic | GPT-5 OpenAI |
|---|---|---|
| Description | Claude Opus 4.5 is an AI model from Anthropic. | OpenAI's August 2025 unified frontier model that auto-routes between a fast model and a deeper "thinking" variant. |
| Family | Claude | GPT 5 |
| Params | - | Undisclosed (closed) |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 24 Nov 2025 | 7 Aug 2025 |
| Context | 200,000 | 400,000 |
| Input $/1M | $5.00 | $1.25 |
| Output $/1M | $25.00 | $10.00 |
| Cache read $/1M | $0.500 | $0.125 |
| Cache write $/1M | $6.250 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | file, image, text | text, image, file |
| Providers | - | openai |
| Publisher | Anthropic | OpenAI |
| Reported scores | SWE-bench74.9% (Verified) GPQA Diamond85.4% (AA) Humanity's Last Exam (HLE)28.5% (AA) IFBench73.1% (AA) |
FAQ
- Is Claude Opus 4.5 or GPT-5 better?
- Across the 23 benchmarks both models report on Sophon, Claude Opus 4.5 leads on 18 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Opus 4.5 and GPT-5 compare on GPQA Diamond?
- Claude Opus 4.5 scores 86.6% and GPT-5 scores 85.4% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.5 or GPT-5?
- GPT-5 is cheaper at $10.00 per million output tokens against $25.00 for Claude Opus 4.5 - about 2.5x.
- When were Claude Opus 4.5 and GPT-5 released?
- Claude Opus 4.5 was released 24 Nov 2025 by Anthropic. GPT-5 was released 7 Aug 2025 by OpenAI.
Other head-to-heads
56GPT-4.1 Mini vs GPT-541 shared evalsGPT-5 vs GPT-5 Mini36 shared evalsClaude Opus 4.5 vs GPT-5.235 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.534 shared evalsClaude Sonnet 4.5 vs GPT-531 shared evalsClaude Opus 4.5 vs GPT-5 Mini31 shared evalsClaude Opus 4.5 vs Grok 4.1 Fast29 shared evalsGPT-5 vs GPT-5 Nano28 shared evalsGPT-4.1 vs GPT-528 shared evalsClaude Opus 4.5 vs Gemini 3.1 Pro Preview28 shared evalsClaude Opus 4.5 vs Claude Opus 4.628 shared evalsClaude Opus 4.5 vs GPT-5.428 shared evalsClaude Opus 4.5 vs DeepSeek V3.227 shared evalsClaude Opus 4.5 vs GPT-5 Nano26 shared evalsClaude 4 Sonnet vs Claude Opus 4.526 shared evalsClaude Opus 4.5 vs Kimi K2.526 shared evalsClaude 4 Sonnet vs GPT-525 shared evalsClaude Opus 4.5 vs GPT-5.525 shared evalsClaude Opus 4.5 vs GLM 4.725 shared evalsClaude Opus 4.5 vs GPT-5.4 Mini25 shared evalsGemini 2.5 Pro vs GPT-524 shared evalsClaude Opus 4.5 vs Claude Opus 4.824 shared evalsClaude Opus 4.5 vs Claude Opus 4.724 shared evalsClaude Opus 4.5 vs Gemini 2.5 Pro24 shared evalsGPT-5 vs GPT-5.223 shared evalsClaude Fable 5 vs Claude Opus 4.523 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.623 shared evalsClaude Opus 4.5 vs GLM 5.123 shared evalsClaude Opus 4.5 vs Qwen3.6 Plus22 shared evalsGPT-4.1 Nano vs GPT-521 shared evalsClaude Opus 4.5 vs gpt-oss-120b21 shared evalsGPT-5 vs Grok 4.1 Fast20 shared evalsGemini 3.1 Pro Preview vs GPT-519 shared evalsClaude Opus 4.6 vs GPT-519 shared evalsGPT-5 vs GPT-5.419 shared evalsDeepSeek V3.2 vs GPT-519 shared evalsGPT-4o vs GPT-519 shared evalsGPT-5 vs GPT-5.518 shared evalsGPT-5 vs Kimi K2.518 shared evalsClaude Opus 4.5 vs GPT-4o18 shared evalsClaude Opus 4.8 vs GPT-517 shared evalsClaude Opus 4.7 vs GPT-517 shared evalsGPT-5 vs gpt-oss-120b17 shared evalsGLM 4.7 vs GPT-517 shared evalsClaude Opus 4.5 vs GPT-4.1 Mini16 shared evalsClaude Fable 5 vs GPT-516 shared evalsGPT-4o-mini vs GPT-516 shared evalsClaude Sonnet 4.6 vs GPT-516 shared evalsGLM 5.1 vs GPT-516 shared evalsGPT-5 vs GPT-5.4 Mini16 shared evalsClaude Opus 4.5 vs GPT-4.116 shared evalsGPT-5 vs Qwen3.6 Plus15 shared evalsClaude Opus 4.5 vs GPT-4o-mini15 shared evalsClaude Opus 4.5 vs GPT-4.1 Nano15 shared evalsGPT-5 vs GPT-6 Astra12 shared evalsClaude Opus 4.5 vs GPT-6 Astra11 shared evals
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