Claude Sonnet 4.5 vs Gemini 2.5 Pro
Head to head on 26 shared benchmarks, with price, context window, and release dates.
Benchmark scores
89evals · sort by any column, ⤢ to expand fullscreen
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| Gemini 2.5 Pro Google (Alphabet Inc.) | 87.7% | 60.8% | 1419elo | 58.8 | 14.1% | 84.4% | 22.5% | 48.7% | 77.9% | 86.7% | 81.0% | 65.9% | 80.1% | 96.7% | 50.6% | 73.6% | 86.2% | 68.9% | 70.0% | 41.9% | 42.8% | 53.6% | 72.9% | 26.5% | 0.4% | 54.1% | - | - | 83.1% | 88.7% | - | - | 50.4% | - | - | - | - | - | - | 45.2% | 15.9% | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 55.6 | - | - | - | - | - | - | - | - | - | - | - | - | 53.3% | 59.5% |
| Claude Sonnet 4.5 Anthropic | 37.0% | 60.8% | 1675elo | 71.4 | 15.2% | 72.7% | 7.2% | 42.7% | 70.7% | 80.4% | 53.4% | 76.5% | 59.0% | 0.0% | 40.6% | 84.5% | 86.0% | 64.0% | 0.0% | 32.9% | 42.8% | 74.8% | 73.3% | 28.8% | 22.6% | 70.5% | 0.0% | 0.0% | - | - | 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% | 83.8% | 0.0% | 0.0% | 57.0% | 79.3% | 77.6% | 0.75 | 0.75 | 0 | 0 | 0.0% | 62.9% | 0.0% | 0.0% | 19.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | - | 0 | 0.0% | 0.0% | 77.2% | 67.0% | 0.0% | 0 | 0 | 50.34 | 0 | 0.0% | 1.49 | - | 27.5% |
2 / 2 models
| Attribute | Claude Sonnet 4.5 Anthropic | Gemini 2.5 Pro Google (Alphabet Inc.) |
|---|---|---|
| Description | anthropic/claude-sonnet-4.5 is an AI model. | Gemini 2.5 Pro is an AI model from Google (Alphabet Inc.). |
| Family | Claude | Gemini |
| Params | Undisclosed (closed) | - |
| Open weights | closed | closed |
| License | Proprietary | proprietary |
| Released | 29 Sep 2025 | 5 Jun 2025 |
| Context | 1,000,000 | 1,048,576 |
| Input $/1M | $3.00 | $1.25 |
| Output $/1M | $15.00 | $10.00 |
| Cache read $/1M | $0.300 | $0.125 |
| Cache write $/1M | $3.750 | $0.375 |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text, image, file, audio, video |
| Providers | anthropic, aws-bedrock, vertex-ai | - |
| Publisher | Anthropic | Google (Alphabet Inc.) |
| 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 Gemini 2.5 Pro better?
- Across the 26 benchmarks both models report on Sophon, Gemini 2.5 Pro leads on 14 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Sonnet 4.5 and Gemini 2.5 Pro compare on GPQA Diamond?
- Claude Sonnet 4.5 scores 72.7% and Gemini 2.5 Pro scores 84.4% on GPQA Diamond.
- Which is cheaper, Claude Sonnet 4.5 or Gemini 2.5 Pro?
- Gemini 2.5 Pro is cheaper at $10.00 per million output tokens against $15.00 for Claude Sonnet 4.5 - about 1.5x.
- When were Claude Sonnet 4.5 and Gemini 2.5 Pro released?
- Claude Sonnet 4.5 was released 29 Sep 2025 by Anthropic. Gemini 2.5 Pro was released 5 Jun 2025 by Google (Alphabet Inc.).
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