# Claude Opus 5.5 vs GLM 5.2

As of Oct 14, 2026, Claude Opus 5.5 leads GLM 5.2 in 6 of 7 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).

Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.

GLM 5.2: $1.7799999999999998 per 1M blended tokens.

Claude Opus 5.5: closed weights.

GLM 5.2: open weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 5.2 in General LLM at #2 against #26.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 5.2 in Reasoning at #1 against #30.
- Which to pick, Science: As of Oct 14, 2026, GLM 5.2 leads Claude Opus 5.5 in Science at #23 against #31.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 5.2 in Coding › Web dev at #1 against #23.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 5.2 in Long context at #1 against #25.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 5.2 in Factuality at #1 against #31.
- Which to pick, Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5.5 leads GLM 5.2 in Abstraction (ARC) at #1 against #29.

As of Oct 14, 2026, Claude Opus 5.5 is tied for state of the art in Reasoning (since Oct 2, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).

As of Oct 14, 2026, GLM 5.2 is a former state-of-the-art holder in Coding › Web dev (since Jun 18, 2026; sources LMArena WebDev; methodology v1.0).