Meta AI launches Muse Ember, its smallest and most efficient model

Meta AI launched Muse Ember, described as its smallest and most efficient model, aimed at tool calls, coding subtasks, routing, extraction and long document parsing. For shorter prompts it is priced at $0.10 per million input tokens and $0.50 per million output, the same as GPT-6 Luna and Claude Haiku 5.5, while its long-prompt rates of $0.30 input and $1.50 output above 200k tokens place it between the two. Simon Willison notes the model sits on the Pareto line of Artificial Analysis's Intelligence Index vs. Cost per Task chart, and that its six reasoning levels produced pelican SVGs of comparable quality to Muse Wonder at 40x the price.