# Meta Opens a Paid Frontier API With Muse Spark and Drop-In OpenAI SDK Compatibility

The Meta Model API is self-serve with no waitlist, ships $20 of free credits, and accepts existing OpenAI client code pointed at a new endpoint.

- Published: 2026-09-29T06:12:03.689Z
- Canonical: https://polylog.news/ai/2026-09-29/meta-opens-a-paid-frontier-api-with-muse-spark-and-drop-in-o
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Meta AI](https://ai.meta.com/blog/introducing-muse-spark-meta-model-api/)

Meta has put a frontier model behind a metered, paid developer API for the first time. Muse Spark 1.1 is a multimodal reasoning model built for agentic work, with a million-token context window and gains the company claims in tool use, comp…

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