Muse Spark 1.3
Meta馃嚭馃嚫
meta/muse-spark-1.3Muse Spark 1.3 is Meta's proprietary coding and agentic model, released September 2, 2026 with a 1M-token context window and text, image, and video input, served through Muse Code and the Meta Model API. It is Meta's largest coding and agentic improvement to date, running roughly 20% fewer tool calls and 25% fewer tokens per task than Muse Spark 1.2 while sustaining longer-horizon work, and defaults to its broadly available xhigh reasoning level.
Cost rate
0.9x
Context
1M
Released
Sep 2, 2026
Input
TextImageVideoFileAudio
Output
Text
Support
ReasoningTool callingStructured outputs
Best at
The categories where this model ranks highest.
Software & IT Services
#5 路 top 1%
Business, Management, & Finance
#6 路 top 2%
Image understanding
#6 路 top 4%
Legal & Government
#12 路 top 3%
Performance
Median latency and throughput measured across recent requests.
Throughput221 tok/s
Latency