Meta's Muse Spark 1.3 Cuts Tool Calls ~20% and Tokens ~25%, Says Alexandr Wang
alexandr_wang · x · 2026-09-03
Alexandr Wang announced Muse Spark 1.3 is now live in the Meta Model API and Muse Code. Compared with Muse Spark 1.2, the new model wastes fewer turns, uses 20% fewer tool calls and 25% fewer tokens, and holds onto requirements well during long-horizon tasks. He teased bigger and more capable Muse models, an open-weights release of Muse Spark, and new products coming soon.
Related event: Meta Launches Muse Spark 1.3: Near-Frontier Performance at ~1/8 the Price(53 posts)→
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