Meta Model API
Meta Model API (dev.meta.ai)
Muse Spark for developers
Latest: Public preview serving Muse Spark 1.2 with expanded global access (Aug 2026)
Meta's first-party API for the Muse model family, opened in public preview July 9, 2026 with Muse Spark 1.1 — Meta's first serious paid developer platform for frontier models, replacing the open-download Llama distribution model. Serves Muse Spark 1.1/1.2 with a 1M-token context window; Muse models are also available via OpenRouter.
Why it matters
The Model API is the first time Meta has sold frontier inference directly, replacing the free Llama download model with a paid, OpenAI-SDK-compatible platform at $1.25/$4.25 per million tokens. It now serves Muse Spark 1.3, Muse Image and Muse Voice Transcribe with a 1M-token context, and absorbed the old Llama API in July 2026.
Facts
- Launch pricing: $1.25 per million input tokens, $4.25 per million output tokens, with $20 in free starter credits.
- Docs live at dev.meta.ai.
- Positioned head-on against GPT-5.5, Claude Opus 4.8 and Gemini 3.1 Pro APIs.
Try it yourself
API docs and quickstart ↗ Pricing and models overview ↗ Meta models on OpenRouter ↗
Lineage
Sources
Meta AI blog ↗Axios ↗TechCrunch ↗