Mistral Large 4 Preview vs Claude Opus 5.5 (Max, Default Fallback)

What the captured data shows

Mistral Large 4 Preview has lower listed input and output prices, while Claude Opus 5.5 has the higher reported intelligence index. Individual benchmark scores are absent from both current records. The index difference therefore gives a broad signal without showing which particular task accounts for it.

Which model fits your workflow

Test the preview on the work that makes Opus useful to you, with a clear rule for accepting or rejecting each answer. Account for preview availability separately from output quality. Mistral’s missing timing fields mean this dataset cannot settle which service will respond sooner.

Decision takeaway

Compare the lower listed Mistral prices with the actual quality your task requires; the higher Opus index is not a task-specific guarantee.

These figures come from Franklin’s Artificial Analysis-sourced model records captured on 2026-10-11. Read the individual model entries for the data snapshot: Mistral Large 4 Preview and Claude Opus 5.5 (Max, Default Fallback). Missing measurements remain unavailable; this page does not report a new hands-on test.