Grok 4.1 Fast vs Kimi K2
Grok 4.1 Fast costs 74% less at typical usage ($0.28 vs $1.07 per 1M tokens). Kimi K2 scores higher on 6 of 11 tasks.
| Spec | Grok 4.1 Fast | Kimi K2 |
|---|---|---|
| Input /1M | $0.20 | $0.60 |
| Output /1M | $0.50 | $2.50 |
| Typical /1M | $0.28 | $1.07 |
| Context window | 2M | 256k |
| Speed | Fast | Brisk |
| Privacy | Standard | Self-host |
| Open weights | No | Yes |
Grok 4.1 Fast
Steady since we started tracking (Jul 13, 2026)
Kimi K2
Steady since we started tracking (Jul 13, 2026)
Quality by task
Coding82/87
Agents84/90
Reasoning84/88
Writing82/86
Chat86/86
Classify84/83
Extract84/84
Summarize85/86
Translate84/84
Vision84/30
General83/86
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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.