# GLM 4.5 Air vs Muse Spark

As of Oct 15, 2026, GLM 4.5 Air leads Muse Spark in 0 of 5 shared categories.

GLM 4.5 Air: $0.31 per 1M blended tokens.

Muse Spark: price per 1M tokens is unset in the catalog.

GLM 4.5 Air: open weights.

Muse Spark: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Muse Spark leads GLM 4.5 Air in General LLM at #12 against #183.
- Which to pick, Reasoning: As of Oct 15, 2026, Muse Spark leads GLM 4.5 Air in Reasoning at #17 against #181.
- Which to pick, Math: As of Oct 15, 2026, Muse Spark leads GLM 4.5 Air in Math at #7 against #32.
- Which to pick, Long context: As of Oct 15, 2026, Muse Spark leads GLM 4.5 Air in Long context at #44 against #179.
- Which to pick, Factuality: As of Oct 15, 2026, Muse Spark leads GLM 4.5 Air in Factuality at #27 against #145.

As of Oct 15, 2026, GLM 4.5 Air is ranked #32 in Math (since Oct 15, 2026; sources Humanity's Last Exam; methodology v1.0).

As of Oct 15, 2026, Muse Spark is a former state-of-the-art holder in General LLM (since May 18, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).