# Meta Sells Muse Spark 1.3 at $1.25 per Million Input Tokens Through Its Own Metered API

The model carries a one-million-token context and closed weights, places sixth of 636 models on the Artificial Analysis Intelligence Index, and still trails Opus 5 on four of six agent benchmarks in Meta's own scorecard.

- Published: 2026-09-28T06:48:56.769Z
- Canonical: https://polylog.news/ai/2026-09-28/meta-sells-muse-spark-1-3-at-1-25-per-million-input-tokens-t
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [Meta AI](https://ai.meta.com/blog/introducing-muse-spark-meta-model-api/), [Meta AI](https://ai.meta.com/blog/introducing-muse-image-muse-video-msl/)

Meta's shift from open weights to a metered endpoint is now fully priced. The Meta Model API, launched in public preview in July alongside Muse Spark 1.1, is OpenAI-compatible with structured output and parallel tool calling, which removes…

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