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New on the radar: Muse Spark Open appeared in models.dev (togetherai)

Muse Spark Openconfirmedby ArtificialWatch

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CONFIRMED2026-10-17 · Muse Spark OpenMuse Spark Opennew on the radarINTEL
verified against a primary source

Our hourly sweep found an id that was not there an hour ago.

Catalog id: togetherai/meta-models/Muse-Spark-Open-816B-A42B Listed price: $1.25/$4.25 per 1M Context window: 1,048,576 tokens First observed by our sweep: 2026-10-17 21:15 UTC Source: models.dev (togetherai)

The rest of this analysis — 2 more paragraphs — plus the source, is on the paid plans.

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Claude Opus 5 went live at 16:51 UTC. The alert was in subscribers' inboxes at 16:52.

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