Meta Superintelligence Labs

Alexandr Wang / Meta announced **Muse Spark 1.3**, rolling out today in **Muse Code** and the **Meta Model API**. - Positioned as Meta’s most capable Muse Spark yet for agentic and coding workloads, with better real-world usability from months of Muse Code / API adoption. - Stronger long-horizon agentic workflows: multi-workflow threads, clarifying questions, fewer dropped requirements, better multitasking in messy single-threaded contexts. - Vs Muse Spark 1.2: wastes fewer turns, ~**20% fewer tool calls**, ~**25% fewer tokens**, cleaner coding style; max reasoning mode coming after additional safety testing. - Safety: stronger adversarial robustness / prompt-injection resistance and better calibration on irreversible actions. - Roadmap notes bigger Muse models ahead and a Muse Spark open-weights release after final safety work. Official Meta AI Research blog + founder thread (@alexandr_wang).