# Claude Fable 5.1 vs GLM 5.3

As of Oct 15, 2026, Claude Fable 5.1 leads GLM 5.3 in 7 of 7 shared categories: General LLM, Reasoning, Coding, Coding › Agentic, Coding › Web dev, Long context, and Factuality.

Claude Fable 5.1: $20 per 1M blended tokens.

GLM 5.3: $1.275 per 1M blended tokens.

Claude Fable 5.1: closed weights.

GLM 5.3: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Fable 5.1 leads GLM 5.3 in General LLM at #6 against #24.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Fable 5.1 leads GLM 5.3 in Reasoning at #5 against #19.
- Which to pick, Coding: As of Oct 15, 2026, Claude Fable 5.1 leads GLM 5.3 in Coding at #3 against #7.
- Which to pick, Coding › Agentic: As of Oct 15, 2026, Claude Fable 5.1 leads GLM 5.3 in Coding › Agentic at #3 against #7.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Fable 5.1 leads GLM 5.3 in Coding › Web dev at #5 against #20.
- Which to pick, Long context: As of Oct 15, 2026, Claude Fable 5.1 leads GLM 5.3 in Long context at #6 against #31.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Fable 5.1 leads GLM 5.3 in Factuality at #1 against #31.

As of Oct 15, 2026, Claude Fable 5.1 is tied for state of the art in Factuality (since Oct 2, 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).