Meta Unveils Muse Spark 1.3 Max: Frontier Performance at Lower Cost

AI at Meta Sep 5, 2026

Key Info

Meta has released Muse Spark 1.3 with max reasoning on Muse Code and Meta Model API, giving developers access to strong coding and agentic performance at a lower cost. Meta Superintelligence Labs also created demos, including a one-shot prompt that builds a full C rendering engine from scratch.

Highlights

Muse Spark 1.3 max is now publicly available through Muse Code and Meta Model API.
Meta says the release brings significantly stronger coding and agentic performance.
Early benchmark data puts it at around 62 on Artificial Analysis, above Gemini 3.8 Flash’s 59.
Demo highlights include a one-shot prompt that generates a C rendering engine, from simple primitives to complex lighting scenes.

Original post

RT @MetaforDevs: Muse Spark 1.3 with max reasoning is now available on Muse Code and Meta Model API. Developers can build with frontier performance without the frontier prices. We thought showing would be better than telling, and encouraged our friends in Meta Superintelligence Labs to come up with a few demos. One-shot prompt: Build a rendering engine from scratch in C that writes pixels directly, scales from simple primitives to complex scenes, and culminates in a striking lighting demo. Check out the rest 👇🏻(1/4)

#Muse Spark 1.3#Meta#AI model

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