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Claude Opus 5 vs Mistral Large 3

Facts only. This page does not pick a winner. For a picked winner, see the use case comparison on Tools.

Claude Opus 5Mistral Large 3
API model IDsclaude-opus-5mistral-large-2512
Context window1,000,000256,000
Lifecycleactiveactive
Licenseproprietaryopen-weights
Trains on API dataNoYes
Zero data retentionon-requeston-request
Input per 1M tokens$5 (verified 2026-09-08)$0.5 (verified 2026-09-08)