Meta releases Muse Spark 1.3
On September 2, 2026, Meta released Muse Spark 1.3, including a max-reasoning option, on Muse Code and Meta Model API. It targets stronger agentic and coding work and more reliable long instructions.
Models: Muse Spark 1.3
Source: Meta Superintelligence Labs research, checked Sep 28, 2026. Summarized from the provider’s announcement.