Mistral: Mistral Large 4 vs OpenAI: GPT-6.1 Sol

For a sample job of 1 million input tokens and 250,000 output tokens, Mistral Large 4 costs $1.20 and GPT-6.1 Sol costs $4.50, so Mistral Large 4 is about 3.7 times cheaper for the same work.

GPT-6.1 Sol reads up to 1,050,000 tokens at once, roughly 1,575 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), GPT-6.1 Sol on 16 (SQL Generation, Code Review, Code Refactoring and others).

Mistral Large 4 was released in October 2026 and GPT-6.1 Sol in September 2026.

Pick Mistral Large 4 if you need lower cost; pick GPT-6.1 Sol 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.