Claude Opus 5 vs Mistral Medium 3.5
As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
Mistral Medium 3.5
#82 Best current rank: #82 in General LLM, as of Oct 14, 2026.
| Category | Claude Opus 5 | Mistral Medium 3.5 |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #82 · #82 in General LLM Margin 55.78231292517007 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 LMArena leaderboard dataset · Oct 13, 2026 | #86 · #86 in Reasoning Margin 59.58904109589041 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | — |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #6 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 | #99 · #99 in Coding › Web dev Margin 91.58878504672897 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #93 · #93 in Long context Margin 63.265306122448976 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 | #84 · #84 in Factuality Margin 63.43283582089552 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | — |
Claude Opus 5: $10 per 1M blended tokens.
Mistral Medium 3.5: $3 per 1M blended tokens.
Claude Opus 5: closed weights.
Mistral Medium 3.5: open weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in General LLM at #11 against #82.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in Reasoning at #9 against #86.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in Coding › Web dev at #6 against #99.
Long context: As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in Long context at #9 against #93.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in Factuality at #4 against #84.
Claude Opus 5 · Mistral Medium 3.5
Claude Opus 5 or Mistral Medium 3.5?
As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 5 or Mistral Medium 3.5 for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in General LLM at #11 against #82.
Claude Opus 5 or Mistral Medium 3.5 for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in Reasoning at #9 against #86.
Claude Opus 5 or Mistral Medium 3.5 for Coding › Web dev?
As of Oct 14, 2026, Claude Opus 5 leads Mistral Medium 3.5 in Coding › Web dev at #6 against #99.