Muse Spark API
Access and integration guide — what we know and how to get early access.
API Status: Private Preview
The Muse Spark API is only available to select Meta partners. General availability has not been announced. In the meantime, the model is free to use at meta.ai.
What's Known About the API
API Format
REST with streaming
Expected — Meta AI SDK conventions
Text Input
Plain text / prompt
262K context window
Image Input
Base64 encoded
Multimodal — image + text
Voice Input
Base64 audio
Multimodal — voice + text
Inference Modes
"fast" and "contemplating"
Parameter-selectable
General Availability
TBA
Private preview only for now
Use Muse Spark Today at meta.ai
While the API is in private preview, anyone can access Muse Spark for free through Meta's web interface at meta.ai. Supports text, image, and voice input with full 262K context and Contemplating Mode.
Open meta.aiHow to Get Early API Access
Access is currently by invitation only. These are the known paths to apply.
Meta Developer Portal
Apply at developers.meta.com to be considered as a partner for private preview access.
Meta AI Developer Waitlist
Join the Meta AI developer waitlist through the meta.ai platform for future API notifications.
Get notified when the API launches
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