Claude Opus 4.5 vs GPT-5.4 Mini
Head to head on 25 shared benchmarks, with price, context window, and release dates.
Benchmark scores
46evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.5 Anthropic | 61.3% | 35.6% | 6.1% | 1683elo | 73.1 | 20.7% | 81.0% | 13.2% | 43.0% | 83.5% | 78.1% | 79.7% | 74.4% | 62.5% | 81.3% | 90.4% | 80.1% | 68.7% | 36.0% | 45.0% | 47.0% | 74.3% | 40.9% | 20.6% | 86.3% | 62.7% | - | 16.7% | - | 84.7% | 12.13 | 83.8% | 73.8% | 45.2% | 83.2% | 88.9% | 100.0% | 37.4 | 77.5% | 45.3 | 70.7% | 79.2% | 61.8 | - | - | - | 62.2% |
| GPT-5.4 Mini OpenAI | 60.9% | 21.2% | 3.9% | 1662elo | 73 | 28.3% | 60.6% | 5.9% | 38.8% | 80.3% | 70.9% | 71.6% | 70.9% | 60.3% | 71.5% | 78.6% | 72.5% | 63.5% | 21.0% | 50.8% | 39.6% | 71.2% | 18.2% | 48.0% | 23.4% | - | 37.0% | - | 45.4% | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 61.7 | 39.6% | 54.2% | 48.4% |
2 / 2 models
| Attribute | Claude Opus 4.5 Anthropic | GPT-5.4 Mini OpenAI |
|---|---|---|
| Description | Claude Opus 4.5 is an AI model from Anthropic. | GPT-5.4 mini is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 24 Nov 2025 | 17 Mar 2026 |
| Context | 200,000 | 400,000 |
| Input $/1M | $5.00 | $0.75 |
| Output $/1M | $25.00 | $4.50 |
| Cache read $/1M | $0.500 | $0.075 |
| Cache write $/1M | $6.250 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | file, image, text | file, image, text |
| Providers | - | - |
| Publisher | Anthropic | OpenAI |
| Reported scores |
FAQ
- Is Claude Opus 4.5 or GPT-5.4 Mini better?
- Across the 25 benchmarks both models report on Sophon, Claude Opus 4.5 leads on 22 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-5.4 Mini compare on GPQA Diamond?
- Claude Opus 4.5 scores 81.0% and GPT-5.4 Mini scores 60.6% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.5 or GPT-5.4 Mini?
- GPT-5.4 Mini is cheaper at $4.50 per million output tokens against $25.00 for Claude Opus 4.5 - about 5.6x.
- When were Claude Opus 4.5 and GPT-5.4 Mini released?
- Claude Opus 4.5 was released 24 Nov 2025 by Anthropic. GPT-5.4 Mini was released 17 Mar 2026 by OpenAI.
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