# Claude Opus 5 vs Muse Glimmer

As of Oct 15, 2026, Claude Opus 5 leads Muse Glimmer in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.

Claude Opus 5: $10 per 1M blended tokens.

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

Claude Opus 5: closed weights.

Muse Glimmer: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Opus 5 leads Muse Glimmer in General LLM at #11 against #113.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Opus 5 leads Muse Glimmer in Reasoning at #9 against #107.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Opus 5 leads Muse Glimmer in Coding › Web dev at #6 against #97.
- Which to pick, Long context: As of Oct 15, 2026, Claude Opus 5 leads Muse Glimmer in Long context at #9 against #128.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Opus 5 leads Muse Glimmer in Factuality at #4 against #142.

As of Oct 15, 2026, Claude Opus 5 is near state of the art, rank #4 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).

As of Oct 15, 2026, Muse Glimmer is ranked #97 in Coding › Web dev (since Oct 15, 2026; sources LMArena WebDev; methodology v1.0).