Muse Spark 1.2
FrontierClosedMeta
Meta Model API's current Muse Spark checkpoint (`muse-spark-1.2`). Meta documents it as the coding-focused Spark update used with Muse Code; maximum output is not published as a hard token cap on the current model page, so it stays unverified.
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Best for: Terminal coding agents · Long-horizon refactors · Meta Model API stacks
Watch out: A cheaper contributor tier (`muse-spark-1.2-contributor`) permits training use of prompts and completions; standard-tier `muse-spark-1.2` does not. `reasoning_effort: none` is unsupported (HTTP 400). Weights are not marked open until an HF/license card is verified. For local agentic now, prefer Muse Glimmer 30B.
- Released
- August 5, 2026
- Input / 1M
- $1.25
- Output / 1M
- $4.25
- Context
- 1.05M
- Max output
- Not verified