Muse Spark and Glimmer show two routes into Meta AI.

Older evaluation reports remain useful when the version and access conditions stay visible.

Catalog checked 2026-10-13External evaluation analysisAI geeksAI-assisted editorial

What the reports cover

Artificial Analysis’s September 2 report evaluates Muse Spark 1.3, including separate effort configurations and a limited preview. Its August 10 Glimmer report examines a smaller open-weight offering. Meta’s own August 10 announcement confirms Glimmer’s downloadable weights under Apache 2.0. These are different models, with different access routes.

The everyday takeaway

When a newer model appears, older results remain useful context, but their rankings age. Compare the same task and configuration, and check the actual license before planning a local installation. A hosted assistant and a downloadable checkpoint can have very different requirements.

Our coverage boundary

We have not run these models. The benchmark discussion describes the evaluator’s published work, not our measurements. These are historical releases; our separate Muse Wonder briefing covers Meta’s October 12 announcement and an outside evaluation.

Sources & further reading

Open the source to check the original wording and current availability.

This is a source-linked briefing, not a hands-on product review. Provider claims and outside evaluations are identified in the text.