Muse Spark 1.3 Contributor
by NanoGPT · family muse · listed Sep 2026RTV
Meta's Muse Spark 1.3 Contributor is a frontier multimodal reasoning model for long-horizon coding and agentic workflows, with strong gains in computer use, browsing, professional tool use, codebase understanding, and million-token retrieval. It accepts text, images, audio, video, and files, supports tool calling and structured output, and always reasons before answering. Prompts and outputs may be used by Meta for training and to improve its products.
Current rates USD per 1M tokens
Input$0.10
Output$0.20
Cache read$0.002
Cache write—
Against the market
On the record
- Model id
meta/muse-spark-1.3-contributor- Context window
- 1.0M tokens
- Max output
- 944K tokens
- Input modalities
- text, image, video, audio, pdf
- Output modalities
- text
- Reasoning
- yes
- Tool calls
- yes
- Open weights
- no
- Knowledge cutoff
- —
- Released
- 2026-09-02
- Last updated
- 2026-09-02
- Provider docs
- docs.nano-gpt.com
Back of the envelope
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