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Scheduled launch — Sep 6, 2026
Muse Spark 1.3 is listed on AI Kaptan and will enter the daily launch competition on that day. Community upvotes open on launch day.
Muse Spark 1.3
Meta’s flagship model for coding and long-horizon agents. Features reduced token usage, fewer tool calls, and high benchmark scores in agentic tasks.
About Muse Spark 1.3
What the tool does and who it's for
Muse Spark 1.3 is Meta’s flagship model designed for agentic workflows and software development. Available via the Meta Model API and integrated into Muse Code, it delivers strong performance on coding and long-horizon tasks while reducing token usage and tool-call overhead compared to prior iterations. It scores 75.4 on DeepSWE v1.1 and ties Terminal-Bench 2.1 at 88.8. The model features enhanced capabilities to follow requirements, ask clarifying questions, manage multi-step tasks within a single thread, and confirm safety before executing consequential actions.
Key capabilities
Pricing
Paid — plans below
API Usage
$1.25 / $4.25
- $1.25 per million input tokens
- $4.25 per million output tokens
- Same pricing rate as Muse Spark 1.2
- Access via Meta Model API
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