Meta sources

Meta 13

• Introducing Muse Spark Open

  Covers identity · Verified 2026-10-23 · Not versioned · License not stated

  Official announcement, 2026-10-15: 816B total and 42B active parameters, 1M-token context, weights under the Muse Model License.

• Muse Spark Open model card

  Covers identity · Verified 2026-10-23 · Not versioned · License not stated

  Official open-weights repository: text, image, video and audio in, text out; no first-party API.

• Introducing Our Smallest, Most Efficient Model: Muse Ember

  Covers identity, pricing, benchmark · Verified 2026-11-10 · Not versioned · License not stated

  Published 2026-11-09. Muse Ember (muse-ember-1.0), the first model trained using Muse Wonder Full, is available on Meta Model API and Muse Code at $0.10 per million input, $0.004 per million cached input and $0.50 per million output tokens up to 200K input tokens, with a 1M-token context and up to 512K output tokens. Its charts compare it at max reasoning with Claude Haiku 5.5 and GPT-6 Luna; rows marked AA were run by Artificial Analysis, the rest by Meta.

• Muse Ember model page

  Covers identity · Verified 2026-11-10 · Not versioned · License not stated

  Model id muse-ember-1.0, Standard mode only: text, image, video, audio and PDF input, text output, a 1,048,576-token context window and 524,288 output tokens, reasoning effort minimal to max (max by default), on the Responses, Chat Completions and Messages endpoints.

• Meta Model API pricing: Muse Ember

  Covers pricing · Verified 2026-11-10 · Not versioned · License not stated

  Read 2026-11-10. Muse Ember has two tiers set by the input tokens of a request, cached tokens included: up to 200K input tokens, $0.10 input, $0.004 cached input and $0.50 output per million tokens; above 200K the whole request is billed at $0.30, $0.012 and $1.50. Web search grounding costs $2.50 per 1,000 queries.