# GLM 5.3 Flash vs GPT-5.5

As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.5 in 1 of 8 shared categories: Coding › Web dev.

GLM 5.3 Flash: $0.2375 per 1M blended tokens.

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

GLM 5.3 Flash: open weights.

GPT-5.5: closed weights.

- Which to pick, General LLM: As of Oct 14, 2026, GPT-5.5 leads GLM 5.3 Flash in General LLM at #21 against #30.
- Which to pick, Reasoning: As of Oct 14, 2026, GPT-5.5 leads GLM 5.3 Flash in Reasoning at #25 against #26.
- Which to pick, Science: As of Oct 14, 2026, GPT-5.5 leads GLM 5.3 Flash in Science at #30 against #34.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, GLM 5.3 Flash leads GPT-5.5 in Coding › Web dev at #22 against #44.
- Which to pick, Long context: As of Oct 14, 2026, GPT-5.5 leads GLM 5.3 Flash in Long context at #23 against #30.
- Which to pick, Vision: As of Oct 14, 2026, GPT-5.5 leads GLM 5.3 Flash in Vision at #10 against #29.
- Which to pick, Factuality: As of Oct 14, 2026, GPT-5.5 leads GLM 5.3 Flash in Factuality at #5 against #30.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, GPT-5.5 leads GLM 5.3 Flash in Abstraction (ARC) at #7 against #14.

As of Oct 14, 2026, GLM 5.3 Flash is state of the art on best per dollar in Coding (since Oct 14, 2026; sources Terminal-Bench 4.0; methodology v1.0).

As of Oct 14, 2026, GPT-5.5 is a former state-of-the-art holder in General LLM (since Apr 28, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).