Muse Spark 1.2

Muse Spark 1.2 is a coding-focused update to Meta’s Muse Spark 1.1, released on August 5, 2026 alongside the Muse Code agent.

Lab
Meta
Release date

Meta introduced Muse Spark 1.2 on August 5, 2026 as a coding-focused update to Muse Spark 1.1, co-trained with Muse Code, a terminal coding agent Meta launched in beta the same day. Meta said the model emphasizes long-horizon coding tasks. Muse Spark 1.2 is available in Muse Code and the Meta Model API, which Meta said now has expanded global access. Meta did not state a context window, model ID or a preview or general-availability label for the model.

Availability
Muse Code (beta) and the Meta Model API.
Official source
research.meta.ai
Last checked

Questions

When was Muse Spark 1.2 released?
August 5, 2026.
What changed in Muse Spark 1.2?
Meta describes it as a coding-focused update to Muse Spark 1.1, co-trained with Muse Code.
Where is Muse Spark 1.2 available?
In Muse Code and the Meta Model API.

Source

Release dates, model IDs and limits come from each lab’s own announcement, changelog, documentation or deprecations page, linked on every model with the date it was last checked. How we pick and check sources: editorial standards.

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