GPT-5.5 vs Mistral Large 3
As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
GPT-5.5
Close. Near-SOTA in Factuality, rank #5.
Mistral Large 3
#96 Best current rank: #96 in Factuality, as of Oct 15, 2026.
| Category | GPT-5.5 | Mistral Large 3 |
|---|---|---|
| General LLM | #22 · Was SOTA · General LLM Margin 11.702127659574472 LMArena leaderboard dataset · Oct 13, 2026 | #132 · #132 in General LLM Margin 70.2127659574468 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #26 · #26 in Reasoning Margin 14.36170212765957 LMArena leaderboard dataset · Oct 13, 2026 | #134 · #134 in Reasoning Margin 71.80851063829788 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 | #30 · #30 in Science Margin — Epoch AI benchmarking hub · Apr 23, 2026 | — |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #48 · #48 in Coding › Web dev Margin 37.6 LMArena leaderboard dataset · Oct 13, 2026 | #118 · #118 in Coding › Web dev Margin 93.6 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #26 · Was SOTA · Long context Margin 13.829787234042556 LMArena leaderboard dataset · Oct 13, 2026 | #136 · #136 in Long context Margin 72.34042553191489 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #10 · Was SOTA · Vision Margin 28.94736842105263 Epoch AI benchmarking hub · Apr 23, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #5 · Near-SOTA · Factuality Margin 3.4883720930232442 LMArena leaderboard dataset · Oct 13, 2026 | #96 · #96 in Factuality Margin 56.395348837209305 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #7 · #7 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 23, 2026 | — |
GPT-5.5: $11.25 per 1M blended tokens.
Mistral Large 3: price per 1M tokens is unset in the catalog.
GPT-5.5: closed weights.
Mistral Large 3: open weights.
General LLM: As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in General LLM at #22 against #132.
Reasoning: As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in Reasoning at #26 against #134.
Coding › Web dev: As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in Coding › Web dev at #48 against #118.
Long context: As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in Long context at #26 against #136.
Factuality: As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in Factuality at #5 against #96.
GPT-5.5 or Mistral Large 3?
As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
GPT-5.5 or Mistral Large 3 for General LLM?
As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in General LLM at #22 against #132.
GPT-5.5 or Mistral Large 3 for Reasoning?
As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in Reasoning at #26 against #134.
GPT-5.5 or Mistral Large 3 for Coding › Web dev?
As of Oct 15, 2026, GPT-5.5 leads Mistral Large 3 in Coding › Web dev at #48 against #118.