Claude Sonnet 4.6 vs Kimi K3
Claude Sonnet 4.6 leads in 3 of 8 categories
Arena ELO
Claude Sonnet 4.6
Cheaper
Kimi K3
Faster
Claude Sonnet 4.6
Detailed Comparison
| Category | Claude Sonnet 4.6 | Kimi K3 |
|---|---|---|
| Provider | Anthropic | Moonshot AI |
| Context Window | 1M WIN | 128K |
| Input Price ($/1M) | $2 | $0.6 WIN |
| Output Price ($/1M) | $12 | $2.5 WIN |
| Arena ELO | 1440 WIN | N/A |
| Coding | 79.6% SWE-bench | N/A |
| Reasoning | 72.5% OSWorld | N/A |
| Speed (tokens/sec) | ~80 t/s WIN | N/A |
| Open Source | No | Yes |
Frequently Asked Questions
Which is cheaper, Claude Sonnet 4.6 or Kimi K3?
Kimi K3 is approximately 78% cheaper than Claude Sonnet 4.6 per million tokens.
Which is better for coding, Claude Sonnet 4.6 or Kimi K3?
Claude Sonnet 4.6 scores 79.6% SWE-bench on coding benchmarks, while Kimi K3 scores N/A.
Which has a larger context window?
Claude Sonnet 4.6 supports 1M context, while Kimi K3 supports 128K.
Is Claude Sonnet 4.6 or Kimi K3 open source?
Claude Sonnet 4.6 is proprietary. Kimi K3 is open source.
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