meta/muse-image/text-to-image + paired meta/muse-image/edit, the FAL
listing of Meta's Muse Image model (launched on the Meta Model API in
Aug 2026 at $0.01/image).
- aspect_ratio size family (16:9 / 1:1 / 9:16 from the vendor's
21:9..9:21 enum); always sent on t2i for deterministic framing,
deliberately omitted on edits so Muse follows the input image.
- No seed in the vendor schema (Grok Imagine 2.0 precedent) - the
supports whitelist filters it.
- Edit takes 1-10 reference image_urls (max_reference_images=10).
Schema verified against FAL's OpenAPI for both endpoints. Live E2E
blocked by the FAL account balance lock (403), same as prior catalog
additions.
Teknium