Claude Sonnet 4.5 vs Kimi K2
Kimi K2 costs 82% less at typical usage ($1.07 vs $6.00 per 1M tokens). Claude Sonnet 4.5 scores higher on 11 of 11 tasks.
| Spec | Claude Sonnet 4.5 | Kimi K2 |
|---|---|---|
| Input /1M | $3.00 | $0.60 |
| Output /1M | $15.0 | $2.50 |
| Typical /1M | $6.00 | $1.07 |
| Context window | 200k | 256k |
| Speed | Brisk | Brisk |
| Privacy | Strong | Self-host |
| Open weights | No | Yes |
Claude Sonnet 4.5
Steady since we started tracking (Jul 13, 2026)
Kimi K2
Steady since we started tracking (Jul 13, 2026)
Quality by task
Coding95/87
Agents95/90
Reasoning93/88
Writing93/86
Chat91/86
Classify88/83
Extract90/84
Summarize92/86
Translate88/84
Vision90/30
General93/86
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Prices are list $/1M tokens, hand-maintained from public provider pricing. Task scores are benchmark-informed 0-100 estimates, not gospel — validate on your own evals before moving production traffic. Not affiliated with any model provider.