Claude Sonnet 4.6 vs Kimi K2
Claude Sonnet 4.6 leads in 3 of 8 categories
Arena ELO
Claude Sonnet 4.6
Cheaper
Kimi K2
Faster
Claude Sonnet 4.6
Detailed Comparison
| Category | Claude Sonnet 4.6 | Kimi K2 |
|---|---|---|
| Provider | Anthropic | Moonshot |
| Context Window | 1M WIN | 128K |
| Input Price ($/1M) | $3 | $0.55 WIN |
| Output Price ($/1M) | $15 | $2.2 WIN |
| Arena ELO | 1440 WIN | 1380 |
| Coding | 79.6% SWE-bench | 65.8% SWE-bench |
| Reasoning | 72.5% OSWorld | 60.2% BrowseComp |
| Speed (tokens/sec) | ~80 t/s WIN | ~50 t/s |
| Open Source | No | Yes |
Frequently Asked Questions
Which is cheaper, Claude Sonnet 4.6 or Kimi K2?
Kimi K2 is approximately 85% cheaper than Claude Sonnet 4.6 per million tokens.
Which is better for coding, Claude Sonnet 4.6 or Kimi K2?
Claude Sonnet 4.6 scores 79.6% SWE-bench on coding benchmarks, while Kimi K2 scores 65.8% SWE-bench.
Which has a larger context window?
Claude Sonnet 4.6 supports 1M context, while Kimi K2 supports 128K.
Is Claude Sonnet 4.6 or Kimi K2 open source?
Claude Sonnet 4.6 is proprietary. Kimi K2 is open source.
Which ranks higher on the Chatbot Arena leaderboard?
Claude Sonnet 4.6 ranks higher with ELO 1440 vs 1380.
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