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On November 9, Meta released Muse Ember (muse-ember-1.0), its smallest and most efficient Muse model. It's built for the steps agents repeat all day, like tool calls, coding subtasks, routing, extraction, and long document parsing. It is available on the Meta Model API and Muse Code. It costs $0.10 per 1M input tokens, $0.004 per 1M cached input tokens, and $0.50 per 1M output tokens. It has a 1M-token context window, up to 512K output tokens, and Responses API support. Meta says it matches Claude Haiku 5.5's best score at about a third of the cost. Meta pitches it as a partner for Muse Wonder, where Wonder plans and Ember handles the volume. Source: research.meta.ai/blog/muse-ember.
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