GPT-5.5 vs Mimo V2.6 Flash
As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Flash in 4 of 5 shared categories: General LLM, Reasoning, Long context, and Factuality.
GPT-5.5
It used to be. Was SOTA in General LLM.
Mimo V2.6 Flash
Yes. Yes on Reasoning (best per dollar); Coding › Web dev (best per dollar). Not the overall leader.
| Category | GPT-5.5 | Mimo V2.6 Flash |
|---|---|---|
| General LLM | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 | #55 · #55 in General LLM Margin 37.414965986394556 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 | #43 · #43 in Reasoning Margin 30.13698630136986 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 | #44 · #44 in Coding › Web dev Margin 40.18691588785047 LMArena leaderboard dataset · Oct 13, 2026 | #14 · #14 in Coding › Web dev Margin 12.149532710280369 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 | #55 · #55 in Long context Margin 37.414965986394556 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 · Was SOTA · Factuality Margin 4.477611940298502 LMArena leaderboard dataset · Oct 13, 2026 | #42 · #42 in Factuality Margin 32.089552238805965 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 V2.6 Flash: $0.17500000000000002 per 1M blended tokens.
GPT-5.5: closed weights.
Mimo V2.6 Flash: open weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Flash in General LLM at #21 against #55.
Reasoning: As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Flash in Reasoning at #25 against #43.
Coding › Web dev: As of Oct 14, 2026, Mimo V2.6 Flash leads GPT-5.5 in Coding › Web dev at #14 against #44.
Long context: As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Flash in Long context at #23 against #55.
Factuality: As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Flash in Factuality at #5 against #42.
GPT-5.5 or Mimo V2.6 Flash?
As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Flash in 4 of 5 shared categories: General LLM, Reasoning, Long context, and Factuality.
GPT-5.5 or Mimo V2.6 Flash for General LLM?
As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Flash in General LLM at #21 against #55.
GPT-5.5 or Mimo V2.6 Flash for Reasoning?
As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Flash in Reasoning at #25 against #43.
GPT-5.5 or Mimo V2.6 Flash for Coding › Web dev?
As of Oct 14, 2026, Mimo V2.6 Flash leads GPT-5.5 in Coding › Web dev at #14 against #44.