Claude 3.5 Sonnet vs Kimi K2.5
Head to head on 15 shared benchmarks, with price, context window, and release dates.
Benchmark scores
53evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kimi K2.5 Moonshot AI | 95.8% | 68.3% | 1579elo | 74.9 | 27.9% | 87.6% | 24.4% | 72.5% | 77.9% | 57.4% | 77.7% | 66.5% | 49.0% | 70.8% | 74.2% | - | - | 96.1 | - | - | 33.0% | - | 35.8% | - | 95.4 | 70.2% | 78.5% | 10421 | - | 61.4% | 84.9% | 76.0% | - | - | 62.0% | 39.3% | 76.4% | 87.1 | - | 63.3% | - | 49.9% | 73 | - | 67.3% | - | 34.8% | 69.4 | - | 26.3% | 17.5% | - | 95.9% | 60.7% |
| Claude 3.5 Sonnet Anthropic | 3.3% | 53.6% | 1451elo | 58.4 | 2.1% | 55.3% | 4.1% | 63.7% | 65.6% | 69.2% | 56.4% | 64.1% | 36.6% | 63.4% | 70.2% | 51.6% | 15.7% | - | 52.4% | 24.2% | - | 28.0% | - | 96.4 | - | - | - | - | 0.0% | - | - | - | 38.1% | 77.1% | - | - | - | - | 77.2% | - | 0.0% | - | - | 51.3% | - | 25.3% | - | - | 0.98 | - | - | 62.6% | - | 42.7% |
2 / 2 models
| Attribute | Claude 3.5 Sonnet Anthropic | Kimi K2.5 Moonshot AI |
|---|---|---|
| Description | Claude Sonnet 3.5 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 Oct 2024 | 27 Jan 2026 |
| Context | 200,000 | 262,144 |
| Input $/1M | $3.00 | $0.60 |
| Output $/1M | $15.00 | $3.00 |
| 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 | MortgageTax64.1% Traveling Salesman0.98 (3 samples) SWE-bench Verified63.4% (SWE-bench) SWE-bench Lite51.3% (SWE-bench) SWE-bench Multimodal25.3% (SWE-bench) |
FAQ
- Is Claude 3.5 Sonnet or Kimi K2.5 better?
- Across the 15 benchmarks both models report on Sophon, Kimi K2.5 leads on 14 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude 3.5 Sonnet and Kimi K2.5 compare on GPQA Diamond?
- Claude 3.5 Sonnet scores 55.3% and Kimi K2.5 scores 87.6% on GPQA Diamond.
- Which is cheaper, Claude 3.5 Sonnet or Kimi K2.5?
- Kimi K2.5 is cheaper at $3.00 per million output tokens against $15.00 for Claude 3.5 Sonnet - about 5.0x.
- When were Claude 3.5 Sonnet and Kimi K2.5 released?
- Claude 3.5 Sonnet was released 22 Oct 2024 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 evalsGPT-5.2 vs Kimi K2.530 shared evalsClaude Sonnet 4.5 vs Kimi K2.529 shared evalsKimi K2.5 vs Qwen3.6 Plus29 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 Opus 4.5 vs Kimi K2.527 shared evalsClaude Sonnet 4.6 vs Kimi K2.527 shared evalsGPT-5 Mini vs Kimi K2.526 shared evalsClaude Fable 5 vs Kimi K2.526 shared evalsGLM 5.1 vs Kimi K2.526 shared evalsDeepSeek V3.2 vs Kimi K2.526 shared evalsGrok 4.1 Fast vs Kimi K2.525 shared evalsClaude 4 Sonnet vs Kimi K2.524 shared evalsGPT-5 Nano vs Kimi K2.523 shared evalsGemini 2.5 Pro vs Kimi K2.522 shared evalsClaude 3.5 Sonnet vs GPT-4o22 shared evalsClaude 3.5 Sonnet vs Claude 4 Sonnet21 shared evalsGLM 4.7 vs Kimi K2.521 shared evalsClaude 3.5 Sonnet vs Gemini 2.5 Pro21 shared evalsgpt-oss-120b vs Kimi K2.520 shared evalsClaude 3.5 Sonnet vs Claude Sonnet 4.519 shared evalsClaude 3.5 Sonnet vs GPT-5 Mini19 shared evalsGPT-5 vs Kimi K2.519 shared evalsClaude 3.5 Sonnet vs GPT-4o-mini19 shared evalsClaude 3.5 Sonnet vs GPT-4.118 shared evalsClaude 3.5 Sonnet vs GPT-4.1 Mini17 shared evalsClaude 3.5 Sonnet vs GPT-517 shared evalsClaude 3.5 Sonnet vs GPT-5 Nano17 shared evalsClaude 3.5 Sonnet vs GPT-5.217 shared evalsClaude 3.5 Sonnet vs Claude Opus 4.517 shared evalsClaude 3.5 Sonnet vs DeepSeek V3.217 shared evalsGPT-4o vs Kimi K2.516 shared evalsClaude 3.5 Sonnet vs GPT-4.1 Nano16 shared evalsClaude 3.5 Sonnet vs gpt-oss-120b16 shared evalsClaude 3.5 Sonnet vs Grok 4.1 Fast15 shared evalsClaude 3.5 Sonnet vs GLM 4.715 shared evalsClaude 3.5 Sonnet vs GPT-5.514 shared evalsClaude 3.5 Sonnet vs Claude Opus 4.614 shared evalsGPT-4.1 Mini vs Kimi K2.513 shared evalsClaude 3.5 Sonnet vs Gemini 3.1 Pro Preview13 shared evalsClaude 3.5 Sonnet vs Claude Opus 4.813 shared evalsClaude 3.5 Sonnet vs GPT-5.413 shared evalsGPT-4.1 vs Kimi K2.513 shared evalsGPT-6 Astra vs Kimi K2.513 shared evalsGPT-4o-mini vs Kimi K2.513 shared evalsGPT-4.1 Nano vs Kimi K2.513 shared evalsClaude 3.5 Sonnet vs GLM 5.113 shared evalsClaude 3.5 Sonnet vs Claude Sonnet 4.613 shared evalsClaude 3.5 Sonnet vs Claude Opus 4.713 shared evalsClaude 3.5 Sonnet vs Claude Fable 512 shared evalsClaude 3.5 Sonnet vs Qwen3.6 Plus11 shared evalsClaude 3.5 Sonnet vs GPT-6 Astra6 shared evals
Comparing something else? Build your own side-by-side.