# Claude Sonnet 5.5 vs Mistral Large 4

As of Oct 15, 2026, Claude Sonnet 5.5 leads Mistral Large 4 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.

Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.

Mistral Large 4: $1.0324999999999998 per 1M blended tokens.

Claude Sonnet 5.5: closed weights.

Mistral Large 4: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Sonnet 5.5 leads Mistral Large 4 in General LLM at #29 against #101.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Sonnet 5.5 leads Mistral Large 4 in Reasoning at #18 against #98.
- Which to pick, Science: As of Oct 15, 2026, Claude Sonnet 5.5 leads Mistral Large 4 in Science at #3 against #45.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Sonnet 5.5 leads Mistral Large 4 in Coding › Web dev at #3 against #38.
- Which to pick, Long context: As of Oct 15, 2026, Claude Sonnet 5.5 leads Mistral Large 4 in Long context at #11 against #108.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Sonnet 5.5 leads Mistral Large 4 in Factuality at #17 against #100.

As of Oct 15, 2026, Claude Sonnet 5.5 is tied for state of the art in Coding (since Oct 6, 2026; sources Terminal-Bench 4.0; methodology v1.0).

As of Oct 15, 2026, Mistral Large 4 is ranked #38 in Coding › Web dev (since Oct 15, 2026; sources LMArena WebDev; methodology v1.0).