What is Meta's Muse Ember model?

Meta’s Superintelligence Lab released a new AI model on Monday called Muse Ember, which the lab describes as its lightest and most cost-efficient model yet. Meta says the model was built for the repetitive work that AI agents perform all day.

In its announcement, Meta said Ember was “designed for complex reasoning execution and the work agents repeat all day: tool calls, coding subtasks, routing, extraction, and long document parsing.” The company put its heaviest emphasis on cost per task. Using a composite benchmark score from Artificial Analysis, Meta presents Ember as cheaper and smarter than competitors such as Anthropic’s Haiku and OpenAI’s Luna.

How much does Muse Ember cost to use?

Price is central to the pitch. At 10 cents per million input tokens, Ember costs significantly less than frontier competitors like Haiku and Luna. Meta also says the model is cost-competitive with open-source options, including DeepSeek V4.1 Flash and GLM 5.3 Flash.

How does Muse Ember work with a larger model?

Ember is not meant to work alone. Meta designed it to pair with a larger model, Muse Wonder, inside an agentic system. In a customer-support example Meta offered, a heavier model sets the rules for handling a particular issue, then passes the work to a lighter model that applies those rules across tens of thousands of cases. In Meta’s words, “Muse Wonder plans, Muse Ember handles the volume.”

Meta also trained Ember to handle several types of media, including text, images and audio. The company said that “agents can read screenshots, charts, and scanned documents, or work from voice memos, meeting recordings, and video without a separate model.”

Ember is the fourth model released under Meta’s Muse brand. It follows Spark, a mid-weight model released in April; Glimmer, the open-source twin of Spark, released in August; and Wonder, the frontier model released in October. Meta’s flagship consumer AI product, the Muse Agent, launched in September and has been met with unexpected success. The company recently began rolling out new features for it, including Spaces and video chat.

Cet article a été rédigé avec l'assistance de l'IA.
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