# Claude Opus 4.8 vs GLM 5.3

As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 in 5 of 8 shared categories: General LLM, Reasoning, Science, Long context, and Factuality.

Claude Opus 4.8: $10 per 1M blended tokens.

GLM 5.3: $1.275 per 1M blended tokens.

Claude Opus 4.8: closed weights.

GLM 5.3: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 in General LLM at #20 against #23.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 in Reasoning at #10 against #19.
- Which to pick, Science: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 in Science at #27 against #28.
- Which to pick, Coding: As of Oct 15, 2026, GLM 5.3 leads Claude Opus 4.8 in Coding at #7 against #12.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, GLM 5.3 leads Claude Opus 4.8 in Coding › Agentic at #7 against #12.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GLM 5.3 leads Claude Opus 4.8 in Coding › Web dev at #18 against #33.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 in Long context at #10 against #27.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 4.8 leads GLM 5.3 in Factuality at #21 against #27.

As of Oct 15, 2026, Claude Opus 4.8 is a former state-of-the-art holder in Coding › Web dev (since Jun 5, 2026; sources LMArena WebDev; 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).