# 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: $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.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in General LLM at #22 against #97.
- Which to pick, Reasoning: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Reasoning at #26 against #82.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Coding › Web dev at #48 against #66.
- Which to pick, Long context: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Long context at #26 against #79.
- Which to pick, Factuality: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.5 in Factuality at #5 against #85.

As of Oct 15, 2026, GPT-5.5 is near state of the art, rank #5 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).

As of Oct 15, 2026, Mimo V2.5 is ranked #66 in Coding › Web dev (since Oct 15, 2026; sources LMArena WebDev; methodology v1.0).