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Muse Ember: Meta's smallest model launches at $0.10/$0.50
Meta's new small Muse model targets the repeated steps inside agents.
Meta released Muse Ember on November 9, 2026. Meta calls it its smallest and most efficient model, built for the steps agents repeat all day: tool calls, coding subtasks, routing, extraction and long document parsing. It is available now on the Meta Model API and in Muse Code.
What changed
- New model ID:
muse-ember-1.0. - Price for prompts up to 200K tokens: $0.10 input, $0.004 cached input and $0.50 output per million tokens.
- Longer prompts cost $0.30 input, $0.012 cached input and $1.50 output per million tokens.
- 1M-token context window and up to 512K output tokens.
- Meta says Muse Ember supports the Responses API.
Meta list prices
Per million tokens, from Meta's launch post:
| Prompt size | Input | Cached input | Output |
|---|---|---|---|
| Up to 200K tokens | $0.10 | $0.004 | $0.50 |
| Over 200K tokens | $0.30 | $0.012 | $1.50 |
On RouterPlus
Muse Ember is not in the RouterPlus catalog as of November 10, 2026. Meta's open-weight models are, including Muse Spark Open. See all Meta models on RouterPlus.