Claude 4 Sonnet vs Kimi K2.5
Head to head on 23 shared benchmarks, with price, context window, and release dates.
Benchmark scores
54evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kimi K2.5 Moonshot AI | 68.3% | 1579elo | 74.9 | 87.9% | 30.7% | 70.2% | 72.5% | 77.9% | 61.4% | 57.4% | 77.7% | 84.9% | 76.0% | 39.3% | 76.4% | 66.5% | 63.3% | 49.9% | 49.0% | 70.8% | 74.2% | 34.8% | 95.9% | - | - | 96.1 | - | - | 35.0% | - | 35.8% | 27.9% | - | 95.4 | 78.5% | 10421 | - | - | 62.0% | - | 87.1 | - | - | - | 73 | - | 67.3% | - | 69.4 | - | 26.3% | 17.5% | - | - | 59.8% |
| Claude 4 Sonnet Anthropic | 54.7% | 1483elo | 58.4 | 77.7% | 10.7% | 54.7% | 64.8% | 77.5% | 54.6% | 44.3% | 72.9% | 70.5% | 69.0% | 33.9% | 72.4% | 62.5% | 43.9% | 35.0% | 40.0% | 74.6% | 69.6% | 31.1% | 64.6% | 77.3% | 74.3% | - | 22.9% | 47.8% | - | 19.8% | - | - | 67.5% | - | - | - | 65.5% | 99.1% | - | 86.7% | - | 84.2% | 6.18 | 6.18 | - | 58.3% | - | 35.6% | - | 0.59 | - | - | 84.0% | 84.0% | 59.6% |
2 / 2 models
| Attribute | Claude 4 Sonnet Anthropic | Kimi K2.5 Moonshot AI |
|---|---|---|
| Description | Claude 4 Sonnet 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 | 22 May 2025 | 27 Jan 2026 |
| Context | 200,000 | 262,144 |
| Input $/1M | - | $0.60 |
| Output $/1M | - | $2.75 |
| Cache read $/1M | - | $0.150 |
| Cache write $/1M | - | - |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image | 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 4 Sonnet or Kimi K2.5 better?
- Across the 23 benchmarks both models report on Sophon, Kimi K2.5 leads on 22 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude 4 Sonnet and Kimi K2.5 compare on GPQA Diamond?
- Claude 4 Sonnet scores 77.7% and Kimi K2.5 scores 87.9% on GPQA Diamond.
- When were Claude 4 Sonnet and Kimi K2.5 released?
- Claude 4 Sonnet was released 22 May 2025 by Anthropic. Kimi K2.5 was released 27 Jan 2026 by Moonshot AI.
Other head-to-heads
56Claude Opus 4.6 vs Kimi K2.531 shared evalsGemini 3.1 Pro Preview vs Kimi K2.530 shared evalsClaude 4 Sonnet vs GPT-5 Mini29 shared evalsGPT-5.2 vs Kimi K2.529 shared evalsKimi K2.5 vs Qwen3.6 Plus29 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.528 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 evalsGPT-5.4 vs Kimi K2.528 shared evalsClaude Opus 4.7 vs Kimi K2.528 shared evalsClaude Sonnet 4.6 vs Kimi K2.527 shared evalsClaude 4 Sonnet vs Claude Opus 4.526 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 evalsGPT-5 Mini vs Kimi K2.525 shared evalsClaude 4 Sonnet vs GPT-525 shared evalsClaude 4 Sonnet vs GPT-5 Nano25 shared evalsClaude 4 Sonnet vs GPT-5.225 shared evalsClaude 4 Sonnet vs Gemini 2.5 Pro25 shared evalsDeepSeek V3.2 vs Kimi K2.525 shared evalsGPT-5.4 Mini vs Kimi K2.525 shared evalsClaude 4 Sonnet vs Grok 4.1 Fast24 shared evalsGrok 4.1 Fast vs Kimi K2.524 shared evalsClaude 4 Sonnet vs GPT-5.523 shared evalsClaude 4 Sonnet vs Gemini 3.1 Pro Preview23 shared evalsGPT-5 Nano vs Kimi K2.522 shared evalsClaude 4 Sonnet vs Claude Opus 4.822 shared evalsClaude 4 Sonnet vs Claude Fable 522 shared evalsClaude 4 Sonnet vs Claude Opus 4.622 shared evalsClaude 4 Sonnet vs GPT-5.422 shared evalsClaude 4 Sonnet vs GLM 4.722 shared evalsClaude 4 Sonnet vs Claude Opus 4.721 shared evalsClaude 4 Sonnet vs DeepSeek V3.221 shared evalsClaude 4 Sonnet vs gpt-oss-120b21 shared evalsGemini 2.5 Pro vs Kimi K2.521 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.620 shared evalsClaude 4 Sonnet vs GLM 5.120 shared evalsClaude 4 Sonnet vs GPT-4o20 shared evalsGLM 4.7 vs Kimi K2.520 shared evalsClaude 4 Sonnet vs GPT-4.1 Mini19 shared evalsClaude 4 Sonnet vs GPT-4.119 shared evalsClaude 4 Sonnet vs Qwen3.6 Plus19 shared evalsClaude 4 Sonnet vs GPT-5.4 Mini19 shared evalsgpt-oss-120b vs Kimi K2.519 shared evalsGPT-5 vs Kimi K2.518 shared evalsClaude 4 Sonnet vs GPT-4o-mini18 shared evalsClaude 4 Sonnet vs GPT-4.1 Nano16 shared evalsGPT-4o vs Kimi K2.515 shared evalsGPT-6 Astra vs Kimi K2.513 shared evalsGPT-4.1 Mini vs Kimi K2.512 shared evalsGPT-4.1 vs Kimi K2.512 shared evalsGPT-4o-mini vs Kimi K2.512 shared evalsGPT-4.1 Nano vs Kimi K2.512 shared evalsClaude 4 Sonnet vs GPT-6 Astra8 shared evals
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