# GPT-5.5 vs Mimo V2.6 Pro

As of Oct 15, 2026, GPT-5.5 leads Mimo V2.6 Pro in 2 of 5 shared categories: General LLM and Factuality.

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.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.6 Pro in General LLM at #22 against #23.
- Which to pick, Reasoning: As of Oct 15, 2026, Mimo V2.6 Pro leads GPT-5.5 in Reasoning at #21 against #26.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Mimo V2.6 Pro leads GPT-5.5 in Coding › Web dev at #18 against #48.
- Which to pick, Long context: As of Oct 15, 2026, Mimo V2.6 Pro leads GPT-5.5 in Long context at #19 against #26.
- Which to pick, Factuality: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.6 Pro in Factuality at #5 against #8.

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 V2.6 Pro is tied for state of the art in General LLM (since Oct 13, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).