New on the radar: Muse Ember appeared in OpenRouter catalog

Our hourly sweep found an id that was not there an hour ago.

Catalog id: meta/muse-ember
Listed price: $0.10/$0.50 per 1M
Context window: 1,048,576 tokens
First observed by our sweep: 2026-11-09 19:14 UTC
Source: OpenRouter catalog

This entry is machine-written from what the sweep actually read, and nothing else. A catalog listing is a primary source for exactly one narrow fact — that this id now exists, at this price, with this context window — and it is not evidence of anything beyond that. It does not tell you the model is good, that the listing is intentional, that the weights are open, or that the vendor has announced it. Those questions need a human and an editor's judgement, and this item deliberately does not answer them.

It maps to Muse Ember, already on our watchlist — registry note: live — Nov 9 · Meta's smallest and most efficient Muse model, for the work agents repeat all day: tool calls, coding subtasks, routing, extraction and long documents · muse-ember-1.0 on Meta Model API and in Muse Code · $0.10 / $0.50 per 1M, $0.004 cached input, the same sticker as Claude Haiku 5.5 · 1M ctx, up to 512K output (Meta) · text, image, audio and video in; Responses API · Meta says it is the first model trained using Muse Wonder Full · Artificial Analysis Intelligence Index (read on AA Nov 9): Muse Ember (Max) 36 at $0.14 a task, level with Claude Haiku 5.5 (Max) at 36; Meta's 'a third of the cost' is per task, from Meta's chart · Meta's own table at max effort: Terminal-Bench 4.0 40.9 (Haiku 5.5 39.2, GPT-6 Luna 16.4), OSWorld 2.1 69.5 partial (Haiku 68.9) · same day on OpenCode Zen at the same price (models.dev #13190) · our radar saw muse-ember-1.0 on Meta's own model list at 17:54:06 UTC, 34 s before Mark Zuckerberg's post, and fired at 17:55:06.