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Muse Spark Open

Meta AI · · 3 days after Muse Wonder Full

Partially verified

0 of 3 published values traced to a source2 primary sources, 0 archived

Why this status

Newly added. Sources are not archived and no value has been traced to one yet — run `npm run enrich`.

What these states mean · How records are judged · Has this record changed?

The open-weights version of Muse Spark, with additional safety post-training for open release: 816B total and 42B active parameters, natively multimodal, with a 1M-token context window. Weights are published by meta-models on Hugging Face under the Muse Model License, which limits commercial use.

open-weightslong-context

Details

ReleasedOctober 15, 2026
CompanyMeta AI
FamilyMuse
EraAgentic systems
TypeLanguage model · LLM
ModalitiesNot recorded
CapabilitiesNot recorded
WeightsOpen weights
LicenceMuse Model License
Context window1M tokens
Parameters816B

Current information, elsewhere

This record is a historical one: every figure above is traced to a dated primary source. For what is true today — live pricing, current rankings, availability — these are better maintained than anything here could be.

Sources

Record status: partly verified · confidence 60/100 · 2 of 2 primary

Newly added. Sources are not archived and no value has been traced to one yet — run `npm run enrich`.

Primary means published by the organisation that made the model. Verified records require at least one.

Muse family

  1. Muse Spark April 8, 2026
  2. Muse Spark 1.1 July 9, 2026
  3. Muse Spark 1.2 August 5, 2026
  4. Muse Glimmer August 10, 2026
  5. Muse Spark 1.3 September 2, 2026
  6. Muse Wonder October 12, 2026
  7. Muse Wonder Full October 12, 2026
  8. Muse Spark Open October 15, 2026

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