Mistral Medium 3.5 vs O3 Mini
As of Oct 14, 2026, Mistral Medium 3.5 leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
Mistral Medium 3.5
#82 Best current rank: #82 in General LLM, as of Oct 14, 2026.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | Mistral Medium 3.5 | O3 Mini |
|---|---|---|
| General LLM | #82 · #82 in General LLM Margin 55.78231292517007 LMArena leaderboard dataset · Oct 13, 2026 | #7 · #7 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #86 · #86 in Reasoning Margin 59.58904109589041 LMArena leaderboard dataset · Oct 13, 2026 | #133 · Was SOTA · Reasoning Margin 91.78082191780823 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 | — | #76 · #76 in Science Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #99 · #99 in Coding › Web dev Margin 91.58878504672897 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #93 · #93 in Long context Margin 63.265306122448976 LMArena leaderboard dataset · Oct 13, 2026 | #145 · #145 in Long context Margin 98.63945578231292 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | — |
| Factuality | #84 · #84 in Factuality Margin 63.43283582089552 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Abstraction (ARC) | — | #51 · #51 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
Mistral Medium 3.5: $3 per 1M blended tokens.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
Mistral Medium 3.5: open weights.
O3 Mini: closed weights.
General LLM: As of Oct 14, 2026, O3 Mini leads Mistral Medium 3.5 in General LLM at #7 against #82.
Reasoning: As of Oct 14, 2026, Mistral Medium 3.5 leads O3 Mini in Reasoning at #86 against #133.
Long context: As of Oct 14, 2026, Mistral Medium 3.5 leads O3 Mini in Long context at #93 against #145.
Mistral Medium 3.5 or O3 Mini?
As of Oct 14, 2026, Mistral Medium 3.5 leads O3 Mini in 2 of 3 shared categories: Reasoning and Long context.
Mistral Medium 3.5 or O3 Mini for General LLM?
As of Oct 14, 2026, O3 Mini leads Mistral Medium 3.5 in General LLM at #7 against #82.
Mistral Medium 3.5 or O3 Mini for Reasoning?
As of Oct 14, 2026, Mistral Medium 3.5 leads O3 Mini in Reasoning at #86 against #133.
Mistral Medium 3.5 or O3 Mini for Long context?
As of Oct 14, 2026, Mistral Medium 3.5 leads O3 Mini in Long context at #93 against #145.