There is no official Muse Video API yet: video creation runs through the Muse app, not an endpoint
As of November 2, Meta's Model API lists Muse Spark, Muse Wonder, Muse Image, Muse Voice Transcribe, and SAM — none of which outputs video. Muse Video remains a preview announced in July 2026, and the official way to make clips is the Muse app; third-party services selling muse-video endpoints are independent wrappers, priced from $0.30 per short clip.