# Claude Fable 5.1 vs GLM 5.1

As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.1 in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.

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

GLM 5.1: $2.0425 per 1M blended tokens.

Claude Fable 5.1: closed weights.

GLM 5.1: open weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.1 in General LLM at #6 against #37.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.1 in Reasoning at #5 against #36.
- Which to pick, Coding › Web dev: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.1 in Coding › Web dev at #5 against #46.
- Which to pick, Long context: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.1 in Long context at #6 against #36.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Fable 5.1 leads GLM 5.1 in Factuality at #1 against #38.

As of Oct 14, 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 14, 2026, GLM 5.1 is a former state-of-the-art holder in Reasoning (since May 27, 2026; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).