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% | 76.0% | 1810elo | 79.9 | 51.0% | 32.4% | 87.5% | 33.6% | 56.6% | 92.2% | 78.4% | 80.0% | 76.1% | 63.9% | 77.7% | 86.5% | 86.4% | 67.7% | 72.1% | 46.6% | 50.1% | 77.1% | 53.0% | 76.3 | 50.6% | 51.5% | 75.7% | 87.1% | - | 47.2% | 47.6% | 1.35 | 1207elo | - | - | - | - | - | - | 89.3 | 45.0% | - | - | - | 60.6% | 64.7% |
| Kimi K2.5 Moonshot AI | 68.3% | 35.0% | 1579elo | 74.9 | 35.8% | 27.9% | 87.9% | 30.7% | 70.2% | 78.5% | 72.5% | 77.9% | 61.4% | 57.4% | 77.7% | 84.9% | 76.0% | 66.5% | 63.3% | 49.9% | 49.0% | 74.2% | 34.8% | 69.4 | 26.3% | 17.5% | 95.9% | - | 96.1 | - | - | - | - | 95.4 | 10421 | 62.0% | 39.3% | 76.4% | 87.1 | - | - | 73 | 67.3% | 70.8% | - | 59.8% |
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 | open |
| 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 | $2.75 |
| Cache read $/1M | $0.300 | $0.150 |
| Cache write $/1M | $3.750 | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | text, image |
| Providers | - | - |
| Publisher | Anthropic | Moonshot AI |
| Reported scores | GPQA Diamond87.9% (AA) Humanity's Last Exam (HLE)30.7% (AA) IFBench70.2% (AA) SciCode49.0% (AA) τ²-bench (Tau²-bench)95.9% (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 87.5% and Kimi K2.5 scores 87.9% on GPQA Diamond.
- Which is cheaper, Claude Sonnet 4.6 or Kimi K2.5?
- Kimi K2.5 is cheaper at $2.75 per million output tokens against $15.00 for Claude Sonnet 4.6 - about 5.5x.
- 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.
Other head-to-heads
56Claude Sonnet 4.6 vs Gemini 3.1 Pro Preview32 shared evalsClaude Opus 4.6 vs Kimi K2.531 shared evalsClaude Sonnet 4.6 vs GPT-5.530 shared evalsGemini 3.1 Pro Preview vs Kimi K2.530 shared evalsGPT-5.2 vs Kimi K2.529 shared evalsClaude Opus 4.8 vs Claude Sonnet 4.629 shared evalsKimi K2.5 vs Qwen3.6 Plus29 shared evalsClaude Opus 4.7 vs Claude Sonnet 4.629 shared evalsClaude Sonnet 4.5 vs Kimi K2.528 shared evalsGPT-5.5 vs Kimi K2.528 shared evalsClaude Opus 4.8 vs Kimi K2.528 shared evalsClaude Fable 5 vs Claude Sonnet 4.628 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.628 shared evalsGPT-5.4 vs Kimi K2.528 shared evalsClaude Sonnet 4.6 vs GPT-5.428 shared evalsClaude Opus 4.7 vs Kimi K2.528 shared evalsClaude Sonnet 4.6 vs GPT-5.4 Mini28 shared evalsClaude Opus 4.5 vs Kimi K2.526 shared evalsClaude Fable 5 vs Kimi K2.526 shared evalsGLM 5.1 vs Kimi K2.526 shared evalsClaude Sonnet 4.6 vs Qwen3.6 Plus26 shared evalsGPT-5 Mini vs Kimi K2.525 shared evalsDeepSeek V3.2 vs Kimi K2.525 shared evalsGPT-5.4 Mini vs Kimi K2.525 shared evalsClaude Sonnet 4.6 vs GLM 5.125 shared evalsClaude Sonnet 4.5 vs Claude Sonnet 4.624 shared evalsClaude Sonnet 4.6 vs GPT-5.224 shared evalsGrok 4.1 Fast vs Kimi K2.524 shared evalsClaude Sonnet 4.6 vs GPT-5 Mini23 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.623 shared evalsClaude 4 Sonnet vs Kimi K2.523 shared evalsClaude Sonnet 4.6 vs DeepSeek V3.223 shared evalsGPT-5 Nano vs Kimi K2.522 shared evalsClaude Sonnet 4.6 vs Grok 4.1 Fast22 shared evalsGemini 2.5 Pro vs Kimi K2.521 shared evalsClaude Sonnet 4.6 vs GPT-5 Nano20 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.620 shared evalsGLM 4.7 vs Kimi K2.520 shared evalsgpt-oss-120b vs Kimi K2.519 shared evalsClaude Sonnet 4.6 vs Gemini 2.5 Pro19 shared evalsClaude Sonnet 4.6 vs GLM 4.719 shared evalsGPT-5 vs Kimi K2.518 shared evalsClaude Sonnet 4.6 vs gpt-oss-120b18 shared evalsClaude Sonnet 4.6 vs GPT-516 shared evalsGPT-4o vs Kimi K2.515 shared evalsClaude Sonnet 4.6 vs GPT-4o14 shared evalsGPT-6 Astra vs Kimi K2.513 shared evalsClaude Sonnet 4.6 vs GPT-6 Astra13 shared evalsGPT-4.1 Mini vs Kimi K2.512 shared evalsClaude Sonnet 4.6 vs GPT-4.1 Mini12 shared evalsGPT-4.1 vs Kimi K2.512 shared evalsClaude Sonnet 4.6 vs GPT-4.112 shared evalsGPT-4o-mini vs Kimi K2.512 shared evalsGPT-4.1 Nano vs Kimi K2.512 shared evalsClaude Sonnet 4.6 vs GPT-4o-mini12 shared evalsClaude Sonnet 4.6 vs GPT-4.1 Nano12 shared evals
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