Claude Sonnet 4.5 vs GPT-5.4 Mini
Head to head on 23 shared benchmarks, with price, context window, and release dates.
Benchmark scores
89evals · sort by any column, ⤢ to expand fullscreen
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| GPT-5.4 Mini OpenAI | 60.9% | 1665elo | 73 | 28.3% | 87.5% | 28.1% | 73.3% | 80.3% | 70.9% | 71.6% | 70.9% | 60.3% | 71.5% | 78.6% | 72.5% | 63.5% | 21.0% | 50.8% | 52.1% | 71.2% | 52.3% | 48.0% | 83.3% | - | - | - | - | - | - | - | 37.0% | - | - | - | - | 21.2% | 3.9% | - | - | - | - | 45.4% | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 61.7 | - | 33.2% | 54.2% | - | - | 55.2% |
| Claude Sonnet 4.5 Anthropic | 60.8% | 1678elo | 71.4 | 15.2% | 83.4% | 17.8% | 57.3% | 83.8% | 70.7% | 80.4% | 57.0% | 53.4% | 76.5% | 79.3% | 77.6% | 64.0% | 19.0% | 32.9% | 45.7% | 73.3% | 35.6% | 22.6% | 78.1% | 0.0% | 0.0% | 88.0% | 100 | 0.0% | 0.0% | 0.0% | - | 5.0% | 0.0% | 0.0% | 0.0% | - | - | 0.0% | 0.0% | 0.0% | 0.0% | - | 0.0% | 0.0% | 83.9% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 87.5% | 0.0% | 0.0% | 71.4% | 0.75 | 0.75 | 0.0% | 0 | 40.6% | 84.5% | 0 | 87.5% | 0.0% | 0.0% | 62.9% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0 | 0.0% | 0.0% | 77.2% | 67.0% | 74.8% | 0.0% | 0 | 0 | 50.34 | - | 0 | - | - | 0.0% | 1.49 | 29.2% |
2 / 2 models
| Attribute | Claude Sonnet 4.5 Anthropic | GPT-5.4 Mini OpenAI |
|---|---|---|
| Description | anthropic/claude-sonnet-4.5 is an AI model. | GPT-5.4 mini is an AI model from OpenAI. |
| Family | Claude | GPT |
| Params | Undisclosed (closed) | - |
| Open weights | closed | closed |
| License | proprietary | proprietary |
| Released | 29 Sep 2025 | 17 Mar 2026 |
| Context | 1,000,000 | 400,000 |
| Input $/1M | $3.00 | $0.75 |
| Output $/1M | $15.00 | $4.50 |
| Cache read $/1M | $0.300 | $0.075 |
| Cache write $/1M | $3.750 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | file, image, text |
| Providers | anthropic, aws-bedrock, vertex-ai | - |
| Publisher | Anthropic | OpenAI |
| Reported scores | TaxEval v273.3% LiveBench - Math79.3% (LiveBench) LiveBench - Coding80.4% (LiveBench) LiveBench - Language76.5% (LiveBench) LiveBench - Data Analysis57.0% (LiveBench) |
FAQ
- Is Claude Sonnet 4.5 or GPT-5.4 Mini better?
- Across the 23 benchmarks both models report on Sophon, GPT-5.4 Mini leads on 15 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Sonnet 4.5 and GPT-5.4 Mini compare on GPQA Diamond?
- Claude Sonnet 4.5 scores 83.4% and GPT-5.4 Mini scores 87.5% on GPQA Diamond.
- Which is cheaper, Claude Sonnet 4.5 or GPT-5.4 Mini?
- GPT-5.4 Mini is cheaper at $4.50 per million output tokens against $15.00 for Claude Sonnet 4.5 - about 3.3x.
- When were Claude Sonnet 4.5 and GPT-5.4 Mini released?
- Claude Sonnet 4.5 was released 29 Sep 2025 by Anthropic. GPT-5.4 Mini was released 17 Mar 2026 by OpenAI.
Other head-to-heads
56Claude Sonnet 4.5 vs GPT-4.1 Mini35 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.534 shared evalsClaude Sonnet 4.5 vs GPT-5.232 shared evalsClaude Sonnet 4.5 vs GPT-5 Mini31 shared evalsClaude Sonnet 4.5 vs GPT-531 shared evalsClaude Sonnet 4.5 vs GPT-5 Nano31 shared evalsGemini 3.1 Pro Preview vs GPT-5.4 Mini30 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.528 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.528 shared evalsClaude Sonnet 4.5 vs Kimi K2.528 shared evalsClaude Sonnet 4.5 vs Grok 4.1 Fast28 shared evalsClaude Sonnet 4.6 vs GPT-5.4 Mini28 shared evalsClaude Sonnet 4.5 vs Gemini 3.1 Pro Preview27 shared evalsClaude Sonnet 4.5 vs DeepSeek V3.227 shared evalsGPT-5.4 Mini vs GPT-5.427 shared evalsClaude Sonnet 4.5 vs GPT-5.526 shared evalsClaude Sonnet 4.5 vs GPT-5.426 shared evalsClaude Sonnet 4.5 vs Gemini 2.5 Pro26 shared evalsGPT-5.4 Mini vs GPT-5.526 shared evalsClaude Opus 4.8 vs GPT-5.4 Mini26 shared evalsClaude Opus 4.7 vs GPT-5.4 Mini26 shared evalsClaude Opus 4.8 vs Claude Sonnet 4.525 shared evalsClaude Sonnet 4.5 vs GLM 4.725 shared evalsGPT-5.4 Mini vs GPT-5.225 shared evalsClaude Opus 4.5 vs GPT-5.4 Mini25 shared evalsClaude Fable 5 vs GPT-5.4 Mini25 shared evalsClaude Opus 4.6 vs GPT-5.4 Mini25 shared evalsGPT-5.4 Mini vs Kimi K2.525 shared evalsClaude Fable 5 vs Claude Sonnet 4.524 shared evalsClaude Opus 4.7 vs Claude Sonnet 4.524 shared evalsClaude Sonnet 4.5 vs Claude Sonnet 4.624 shared evalsGPT-5.4 Mini vs GPT-5 Mini24 shared evalsGLM 5.1 vs GPT-5.4 Mini24 shared evalsGPT-5.4 Mini vs Qwen3.6 Plus24 shared evalsClaude Sonnet 4.5 vs GLM 5.123 shared evalsClaude Sonnet 4.5 vs gpt-oss-120b23 shared evalsClaude Sonnet 4.5 vs Qwen3.6 Plus22 shared evalsDeepSeek V3.2 vs GPT-5.4 Mini22 shared evalsGPT-5.4 Mini vs Grok 4.1 Fast22 shared evalsClaude Sonnet 4.5 vs GPT-4o21 shared evalsGPT-5.4 Mini vs GPT-5 Nano20 shared evalsClaude Sonnet 4.5 vs GPT-4.119 shared evalsClaude 4 Sonnet vs GPT-5.4 Mini19 shared evalsGLM 4.7 vs GPT-5.4 Mini19 shared evalsGemini 2.5 Pro vs GPT-5.4 Mini18 shared evalsClaude Sonnet 4.5 vs GPT-4o-mini17 shared evalsGPT-5.4 Mini vs gpt-oss-120b17 shared evalsClaude Sonnet 4.5 vs GPT-4.1 Nano16 shared evalsGPT-5 vs GPT-5.4 Mini16 shared evalsGPT-4o vs GPT-5.4 Mini14 shared evalsGPT-4o-mini vs GPT-5.4 Mini12 shared evalsGPT-5.4 Mini vs GPT-6 Astra12 shared evalsGPT-4.1 Nano vs GPT-5.4 Mini12 shared evalsGPT-4.1 Mini vs GPT-5.4 Mini11 shared evalsClaude Sonnet 4.5 vs GPT-6 Astra11 shared evalsGPT-4.1 vs GPT-5.4 Mini11 shared evals
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