Muse Spark 1.2
Coding-focused update to Muse Spark 1.1, released alongside Muse Code, Meta's terminal coding agent
Muse Spark 1.2
Meta • August 2026
Training Data
Not disclosed
Muse Spark 1.2
August 2026
Parameters
Not disclosed
Training Method
Long-horizon training (whole-repository generation, end-to-end projects, auto-research) on coding environments generated by Muse Spark 1.1
Context Window
1,048,576 tokens
Knowledge Cutoff
Not disclosed
Key Features
1M Token Context • Muse Code Agent • Self-Generated Training Environments • Contributor Pricing Tier
Capabilities
Coding: Outstanding
Debugging: Outstanding
Agentic: Excellent
What's New in This Version
Better code generation, complex debugging, and whole-codebase understanding than 1.1; introduced the contributor tier ($0.10/$0.20 per 1M tokens in exchange for training rights) beside the $1.25/$4.25 standard rate, and Zuckerberg has said it will be released as open weights
Coding-focused update to Muse Spark 1.1, released alongside Muse Code, Meta's terminal coding agent
What's New in This Version
Better code generation, complex debugging, and whole-codebase understanding than 1.1; introduced the contributor tier ($0.10/$0.20 per 1M tokens in exchange for training rights) beside the $1.25/$4.25 standard rate, and Zuckerberg has said it will be released as open weights
Technical Specifications
Key Features
Capabilities
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