# Claude Opus 5.5 vs GLM 4 6V

As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4 6V in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.

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

GLM 4 6V: $0.44999999999999996 per 1M blended tokens.

Claude Opus 5.5: closed weights.

GLM 4 6V: open weights.

- Which to pick, General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4 6V in General LLM at #2 against #137.
- Which to pick, Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4 6V in Reasoning at #1 against #145.
- Which to pick, Long context: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4 6V in Long context at #1 against #137.
- Which to pick, Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads GLM 4 6V in Factuality at #1 against #111.

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 4 6V is ranked #111 in Factuality (since Oct 14, 2026; sources LMArena Text factuality; methodology v1.0).