# Claude Opus 5 vs GLM 5.3

As of Oct 15, 2026, Claude Opus 5 leads GLM 5.3 in 8 of 8 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, and Factuality.

Claude Opus 5: $10 per 1M blended tokens.

GLM 5.3: $1.275 per 1M blended tokens.

Claude Opus 5: closed weights.

GLM 5.3: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 5 leads GLM 5.3 in General LLM at #11 against #24.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 5 leads GLM 5.3 in Reasoning at #9 against #19.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 5 leads GLM 5.3 in Science at #12 against #28.
- Which to pick, Coding: As of Oct 15, 2026, Claude Opus 5 leads GLM 5.3 in Coding at #4 against #7.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, Claude Opus 5 leads GLM 5.3 in Coding › Agentic at #4 against #7.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 5 leads GLM 5.3 in Coding › Web dev at #6 against #20.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 5 leads GLM 5.3 in Long context at #9 against #31.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 5 leads GLM 5.3 in Factuality at #4 against #31.

As of Oct 15, 2026, Claude Opus 5 is near state of the art, rank #4 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).

As of Oct 15, 2026, GLM 5.3 is tied for state of the art in General LLM (since Oct 13, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).