Claude Sonnet 4.6 vs Kimi K2.5
Head to head on 27 shared benchmarks, with price, context window, and release dates.
Benchmark scores
45evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Sonnet 4.6 Anthropic | 65.3% | 78.0% | 1805elo | 79.9 | 51.0% | 32.4% | 79.7% | 11.2% | 42.4% | 92.2% | 78.4% | 80.0% | 76.1% | 63.9% | 77.7% | 86.5% | 86.4% | 67.7% | 72.1% | 46.6% | 44.1% | 77.1% | 42.4% | 76.3 | 50.6% | 51.5% | 78.9% | 87.1% | - | 47.2% | 47.6% | 1.35 | 1207elo | - | - | - | - | - | - | 89.3 | 45.0% | - | - | - | 60.6% | 62.8% |
| Kimi K2.5 Moonshot AI | 68.3% | 39.0% | 1576elo | 74.9 | 35.8% | 27.9% | 78.9% | 13.2% | 43.7% | 78.5% | 72.5% | 77.9% | 61.4% | 57.4% | 77.7% | 84.9% | 76.0% | 66.5% | 63.3% | 49.9% | 39.6% | 74.2% | 18.9% | 69.4 | 26.3% | 17.5% | 81.3% | - | 96.1 | - | - | - | - | 95.4 | 10421 | 62.0% | 39.3% | 76.4% | 87.1 | - | - | 73 | 67.3% | 70.8% | - | 56.8% |
2 / 2 models
| Attribute | Claude Sonnet 4.6 Anthropic | Kimi K2.5 Moonshot AI |
|---|---|---|
| Description | Claude Sonnet 4.6 is an AI model from Anthropic. | Kimi K2.5 is an AI model from Kimi. |
| Family | Claude | Kimi |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | Modified MIT |
| Released | 17 Feb 2026 | 27 Jan 2026 |
| Context | 1,000,000 | 262,144 |
| Input $/1M | $3.00 | $0.60 |
| Output $/1M | $15.00 | $3.00 |
| Cache read $/1M | $0.300 | $0.100 |
| Cache write $/1M | $3.750 | - |
| Speed | 45 tok/s | 0 tok/s |
| Latency | 1.12 s | 0.00 s |
| Modalities | text, image, file | text, image |
| Providers | - | - |
| Publisher | Anthropic | Moonshot AI |
| Reported scores | GPQA Diamond79.7% (AA) Humanity's Last Exam (HLE)11.2% (AA) IFBench42.4% (AA) SciCode44.1% (AA) τ²-bench (Tau²-bench)78.9% (AA) | GPQA Diamond78.9% (AA) Humanity's Last Exam (HLE)13.2% (AA) IFBench43.7% (AA) SciCode39.6% (AA) τ²-bench (Tau²-bench)81.3% (AA) |
FAQ
- Is Claude Sonnet 4.6 or Kimi K2.5 better?
- Across the 27 benchmarks both models report on Sophon, Claude Sonnet 4.6 leads on 22 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Sonnet 4.6 and Kimi K2.5 compare on GPQA Diamond?
- Claude Sonnet 4.6 scores 79.7% and Kimi K2.5 scores 78.9% on GPQA Diamond.
- Which is cheaper, Claude Sonnet 4.6 or Kimi K2.5?
- Kimi K2.5 is cheaper at $3.00 per million output tokens against $15.00 for Claude Sonnet 4.6 - about 5.0x.
- When were Claude Sonnet 4.6 and Kimi K2.5 released?
- Claude Sonnet 4.6 was released 17 Feb 2026 by Anthropic. Kimi K2.5 was released 27 Jan 2026 by Moonshot AI.
Comparing something else? Build your own side-by-side.