Integration guide and expected API specs — for when public access launches.
API in Private Preview — Not yet publicly available
Muse Spark was released on April 8, 2026 by Meta Superintelligence Labs. The API is currently restricted to select Meta partners. Meta has indicated plans to open API access and eventually open-source the model — no timeline confirmed.
API Type
REST / Streaming
Expected — Meta AI SDK conventions
Input Formats
Text, Image (base64), Voice
Full multimodal support
Context Window
262K tokens
Extended context support
Inference Modes
fast, contemplating
Parameter-selectable per request
Framework
Meta AI SDK
Expected
Rate Limits
TBA
Not yet announced
Current and upcoming ways to access Muse Spark.
Web Access — Free Now
Use Muse Spark for free at meta.ai. Full multimodal support, no API key required.
Open meta.ai →
Partner API Preview
Apply for early API access at developers.meta.com. Currently for select Meta partners.
Apply at developers.meta.com →
Enterprise
Enterprise access and integrations — contact Meta directly through the Meta for Business portal.
Contact Meta →
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