# GPT-5.5 vs Mimo V2.6 Flash

As of Oct 15, 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: $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.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.6 Flash in General LLM at #22 against #68.
- Which to pick, Reasoning: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.6 Flash in Reasoning at #26 against #54.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Mimo V2.6 Flash leads GPT-5.5 in Coding › Web dev at #15 against #48.
- Which to pick, Long context: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.6 Flash in Long context at #26 against #67.
- Which to pick, Factuality: As of Oct 15, 2026, GPT-5.5 leads Mimo V2.6 Flash in Factuality at #5 against #50.

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 Flash is state of the art on best per dollar in Reasoning (since Oct 14, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).