GPT-5.5 vs Mimo V2.5
As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 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.
Mimo V2.5
#66 Best current rank: #66 in Coding › Web dev, as of Oct 15, 2026.
| Category | GPT-5.5 | Mimo V2.5 |
|---|---|---|
| General LLM | #22 · Was SOTA · General LLM Margin 11.702127659574472 LMArena leaderboard dataset · Oct 13, 2026 | #97 · #97 in General LLM Margin 51.59574468085106 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #26 · #26 in Reasoning Margin 14.36170212765957 LMArena leaderboard dataset · Oct 13, 2026 | #82 · #82 in Reasoning Margin 44.148936170212764 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 | #66 · #66 in Coding › Web dev Margin 52 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #26 · Was SOTA · Long context Margin 13.829787234042556 LMArena leaderboard dataset · Oct 13, 2026 | #79 · #79 in Long context Margin 42.02127659574468 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 | #85 · #85 in Factuality Margin 50 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.
Mimo V2.5: $0.17500000000000002 per 1M blended tokens.
GPT-5.5: closed weights.
Mimo V2.5: open weights.
General LLM: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in General LLM at #22 against #97.
Reasoning: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Reasoning at #26 against #82.
Coding › Web dev: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Coding › Web dev at #48 against #66.
Long context: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Long context at #26 against #79.
Factuality: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Factuality at #5 against #85.
GPT-5.5 or Mimo V2.5?
As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
GPT-5.5 or Mimo V2.5 for General LLM?
As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in General LLM at #22 against #97.
GPT-5.5 or Mimo V2.5 for Reasoning?
As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Reasoning at #26 against #82.
GPT-5.5 or Mimo V2.5 for Coding › Web dev?
As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Coding › Web dev at #48 against #66.