Muse Glimmer

ID muse-glimmer

MetaOpen weights only

First listed October 20, 2026

Muse Glimmer is a Meta model, released August 2026.

Status: Open weights only; Released August 2026
Shutdown: Not on the API; Nothing to shut down

Meta publishes the weights of muse-glimmer but doesn't serve it on its API, so there is no API shutdown to track. Get the weights

Benchmarks

Scores as each source published them

No comparison. Pick a model to see the difference on each benchmark.

Arena

Arena	Muse Glimmer	Rank	Date	Source
Text By category Math 1445 rank 85 Creative writing 1364 rank 165 Instruction following 1414 rank 127 Hard prompts 1447 rank 119 Long prompts 1422 rank 139 Multi-turn 1431 rank 118 Expert 1446 rank 127	1425 ±10	124 of 417 3,889 votes	Oct 20, 2026	source
Text: Coding	1478 ±18	114 of 412 1,117 votes	Oct 20, 2026	source
WebDev	1355 ±16	117 of 148 1,643 votes	Oct 19, 2026	source

Rated as Muse Glimmer. Ratings come from people voting between two anonymous answers; Text is style-controlled, as on arena.ai. Data: Arena (arena.ai), CC BY 4.0.

Prices

No API prices: Meta doesn't serve this model on its API. Run the weights yourself, or use a host that serves them.

Changelog

Changes we detected on Meta's pages

Oct 20, 2026
Added
Meta added muse-glimmer
Info

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Last checked Oct 22, 2026, 2:00 am ET · Sources: Meta models, Meta pricing