Mistral: Mistral Large 4 vs Anthropic: Claude Sonnet 5.5

For a sample job of 1 million input tokens and 250,000 output tokens, Mistral Large 4 costs $1.20 and Claude Sonnet 5.5 costs $4.50, so Mistral Large 4 is about 3.7 times cheaper for the same work.

Claude Sonnet 5.5 reads up to 1,000,000 tokens at once, roughly 1,500 pages of text, against about 786 pages for Mistral Large 4.

Across the 20 tasks where they differ, Mistral Large 4 scores higher on 4 (Code Completion, JSON Extraction, Bulk Data Labeling and others), Claude Sonnet 5.5 on 16 (SQL Generation, Code Review, Code Refactoring and others).

Mistral Large 4 was released in October 2026 and Claude Sonnet 5.5 in September 2026.

Pick Mistral Large 4 if you need lower cost; pick Claude Sonnet 5.5 if you need long documents or the stronger all-round task scores.

Costs use current list prices per million tokens; page counts assume about 0.75 words per token and 500 words per page.