WeavePrism

Grok 4.1 Fast vs Mistral Medium 3

Grok 4.1 Fast costs 66% less at typical usage ($0.28 vs $0.80 per 1M tokens). Mistral Medium 3 scores higher on 3 of 11 tasks.

SpecGrok 4.1 FastMistral Medium 3
Input /1M$0.20$0.40
Output /1M$0.50$2.00
Typical /1M$0.28$0.80
Context window2M128k
SpeedFastFast
PrivacyStandardStrong
Open weightsNoNo
Grok 4.1 Fast
Steady since we started tracking (Jul 13, 2026)
Steady since we started tracking (Jul 13, 2026)
Mistral Medium 3
Steady since we started tracking (Jul 13, 2026)
Steady since we started tracking (Jul 13, 2026)

Quality by task

Coding82/83
Agents84/80
Reasoning84/84
Writing82/84
Chat86/86
Classify84/84
Extract84/84
Summarize85/85
Translate84/88
Vision84/82
General83/83

Price your own prompt against both

The free estimator ranks Grok 4.1 Fast, Mistral Medium 3 and every other catalog model by cost and quality for your exact workload.

Open the estimator

Get notified when either model's price changes

We watch the catalog for list-price changes. Opt in with just an email, no account, and unsubscribe in one click anytime.

Also compare Mistral Medium 3

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.