Claude Sonnet 5.5 vs Mistral Medium 3.5
As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Sonnet 5.5
Yes. SOTA in co-SOTA in Coding, co-SOTA in Coding › Agentic and co-SOTA in Vision.
Mistral Medium 3.5
#82 Best current rank: #82 in General LLM, as of Oct 14, 2026.
| Category | Claude Sonnet 5.5 | Mistral Medium 3.5 |
|---|---|---|
| General LLM | #27 · #27 in General LLM Margin 18.367346938775512 LMArena leaderboard dataset · Oct 13, 2026 | #82 · #82 in General LLM Margin 55.78231292517007 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #18 · #18 in Reasoning Margin 13.013698630136986 LMArena leaderboard dataset · Oct 13, 2026 | #86 · #86 in Reasoning Margin 59.58904109589041 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #4 · #4 in Math Margin 6.666666666666671 Epoch AI benchmarking hub · Sep 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #3 · #3 in Science Margin — Epoch AI benchmarking hub · Sep 28, 2026 | — |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #3 · Near-SOTA · Coding › Web dev Margin 1.8691588785046775 LMArena leaderboard dataset · Oct 13, 2026 | #99 · #99 in Coding › Web dev Margin 91.58878504672897 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #11 · #11 in Long context Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #93 · #93 in Long context Margin 63.265306122448976 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #1 · Co-SOTA · Vision Margin 0 Epoch AI benchmarking hub · Sep 28, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #16 · #16 in Factuality Margin 12.68656716417911 LMArena leaderboard dataset · Oct 13, 2026 | #84 · #84 in Factuality Margin 63.43283582089552 LMArena leaderboard dataset · Oct 13, 2026 |
Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.
Mistral Medium 3.5: $3 per 1M blended tokens.
Claude Sonnet 5.5: closed weights.
Mistral Medium 3.5: open weights.
General LLM: As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in General LLM at #27 against #82.
Reasoning: As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in Reasoning at #18 against #86.
Coding › Web dev: As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in Coding › Web dev at #3 against #99.
Long context: As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in Long context at #11 against #93.
Factuality: As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in Factuality at #16 against #84.
Claude Sonnet 5.5 · Mistral Medium 3.5
Claude Sonnet 5.5 or Mistral Medium 3.5?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Sonnet 5.5 or Mistral Medium 3.5 for General LLM?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in General LLM at #27 against #82.
Claude Sonnet 5.5 or Mistral Medium 3.5 for Reasoning?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in Reasoning at #18 against #86.
Claude Sonnet 5.5 or Mistral Medium 3.5 for Coding › Web dev?
As of Oct 14, 2026, Claude Sonnet 5.5 leads Mistral Medium 3.5 in Coding › Web dev at #3 against #99.