Launching today
Muse Spark 1.3

Muse Spark 1.3

Meta’s flagship for coding and long-horizon agents

1 follower

Muse Spark 1.3 is Meta’s latest flagship for agentic work and coding. Same $1.25 / $4.25 API price as 1.2, with about 20% fewer tool calls and 25% fewer tokens on coding in Meta’s own comparisons. It leads DeepSWE v1.1 at 75.4 and ties Terminal-Bench 2.1 at 88.8. Live today in Muse Code and the Meta Model API. Max reasoning follows after safety testing.
Muse Spark 1.3 gallery image
Muse Spark 1.3 gallery image
Muse Spark 1.3 gallery image
Muse Spark 1.3 gallery image
Muse Spark 1.3 gallery image
Free Options
Launch Team
Lenz
LenzIndependent, multi-model fact-checking API for AI workflows
Promoted