GPT-5.5 vs Mimo V2.6 Pro
As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Pro in 2 of 5 shared categories: General LLM and Factuality.
GPT-5.5
It used to be. Was SOTA in General LLM.
Mimo V2.6 Pro
Yes. Yes on General LLM (open weights); General LLM (best per dollar). Not the overall leader.
| Category | GPT-5.5 | Mimo V2.6 Pro |
|---|---|---|
| General LLM | #21 · Was SOTA · General LLM Margin 14.285714285714292 LMArena leaderboard dataset · Oct 13, 2026 | #22 · #22 in General LLM Margin 14.965986394557817 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #25 · #25 in Reasoning Margin 17.808219178082197 LMArena leaderboard dataset · Oct 13, 2026 | #21 · #21 in Reasoning Margin 15.06849315068493 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · 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 | #16 · #16 in Coding › Web dev Margin 14.018691588785046 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #23 · Was SOTA · Long context Margin 15.646258503401356 LMArena leaderboard dataset · Oct 13, 2026 | #18 · #18 in Long context Margin 12.244897959183675 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 | #8 · #8 in Factuality Margin 6.71641791044776 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 Pro: $0.54375 per 1M blended tokens.
GPT-5.5: closed weights.
Mimo V2.6 Pro: open weights.
General LLM: As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Pro in General LLM at #21 against #22.
Reasoning: As of Oct 14, 2026, Mimo V2.6 Pro leads GPT-5.5 in Reasoning at #21 against #25.
Coding › Web dev: As of Oct 14, 2026, Mimo V2.6 Pro leads GPT-5.5 in Coding › Web dev at #16 against #44.
Long context: As of Oct 14, 2026, Mimo V2.6 Pro leads GPT-5.5 in Long context at #18 against #23.
Factuality: As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Pro in Factuality at #5 against #8.
GPT-5.5 or Mimo V2.6 Pro?
As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Pro in 2 of 5 shared categories: General LLM and Factuality.
GPT-5.5 or Mimo V2.6 Pro for General LLM?
As of Oct 14, 2026, GPT-5.5 leads Mimo V2.6 Pro in General LLM at #21 against #22.
GPT-5.5 or Mimo V2.6 Pro for Reasoning?
As of Oct 14, 2026, Mimo V2.6 Pro leads GPT-5.5 in Reasoning at #21 against #25.
GPT-5.5 or Mimo V2.6 Pro for Coding › Web dev?
As of Oct 14, 2026, Mimo V2.6 Pro leads GPT-5.5 in Coding › Web dev at #16 against #44.