# GLM 4.6 vs GPT-5.5

As of Oct 15, 2026, GLM 4.6 leads GPT-5.5 in 0 of 5 shared categories.

GLM 4.6: $0.875 per 1M blended tokens.

GPT-5.5: $11.25 per 1M blended tokens.

GLM 4.6: open weights.

GPT-5.5: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-5.5 leads GLM 4.6 in General LLM at #22 against #114.
- Which to pick, Reasoning: As of Oct 15, 2026, GPT-5.5 leads GLM 4.6 in Reasoning at #26 against #116.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GPT-5.5 leads GLM 4.6 in Coding › Web dev at #48 against #99.
- Which to pick, Long context: As of Oct 15, 2026, GPT-5.5 leads GLM 4.6 in Long context at #26 against #116.
- Which to pick, Factuality: As of Oct 15, 2026, GPT-5.5 leads GLM 4.6 in Factuality at #5 against #66.

As of Oct 15, 2026, GLM 4.6 is a former state-of-the-art holder in General LLM (since Nov 5, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).

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).