Claude Sonnet 4.5 vs Grok 4.1 Fast
Grok 4.1 Fast costs 95% less at typical usage ($0.28 vs $6.00 per 1M tokens). Claude Sonnet 4.5 scores higher on 11 of 11 tasks.
| Spec | Claude Sonnet 4.5 | Grok 4.1 Fast |
|---|---|---|
| Input /1M | $3.00 | $0.20 |
| Output /1M | $15.0 | $0.50 |
| Typical /1M | $6.00 | $0.28 |
| Context window | 200k | 2M |
| Speed | Brisk | Fast |
| Privacy | Strong | Standard |
| Open weights | No | No |
Claude Sonnet 4.5
Steady since we started tracking (Jul 13, 2026)
Grok 4.1 Fast
Steady since we started tracking (Jul 13, 2026)
Quality by task
Coding95/82
Agents95/84
Reasoning93/84
Writing93/82
Chat91/86
Classify88/84
Extract90/84
Summarize92/85
Translate88/84
Vision90/84
General93/83
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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.