WeavePrism

Claude Sonnet 4.5 vs Mistral Medium 3

Mistral Medium 3 costs 87% less at typical usage ($0.80 vs $6.00 per 1M tokens). Claude Sonnet 4.5 scores higher on 10 of 11 tasks.

SpecClaude Sonnet 4.5Mistral Medium 3
Input /1M$3.00$0.40
Output /1M$15.0$2.00
Typical /1M$6.00$0.80
Context window200k128k
SpeedBriskFast
PrivacyStrongStrong
Open weightsNoNo
Claude Sonnet 4.5
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

Coding95/83
Agents95/80
Reasoning93/84
Writing93/84
Chat91/86
Classify88/84
Extract90/84
Summarize92/85
Translate88/88
Vision90/82
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.