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Muse Spark 1.2

Model ● Covered in 12 stories + Follow

Muse Spark 1.2 is a Meta-developed model used in the company’s agentic coding products, including Muse Code, a terminal-based coding agent that plans changes, writes code, and checks results step by step. Recent coverage also describes Meta’s related releases and comparisons, including a forthcoming open-weight release of Muse Spark 1.2 weights and the rollout of Muse Spark 1.3, which Meta says performs more efficiently than Spark 1.2. Alongside these model updates, Muse Spark 1.2 has been positioned within broader efforts by Meta to shift toward open-weight AI and to support secure, action-capable agent experiences via dedicated infrastructure.

Updated 17 September 2026

Specifications

No specifications recorded yet.

Latest developments

Meta Introduces Muse, a Personal AI Agent That Runs on Its Own Dedicated Secure Cloud Computer MarkTechPost · 1 week ago · 42 Meta AI Released Muse Spark 1.3: An Agentic Coding Model That Uses ~20% Fewer Tool Calls and ~25% Fewer Tokens Than Muse Spark 1.2 MarkTechPost · 2 weeks ago · 49 Meta’s Play for Coding Data, Google Robotics Multi-Embodiment, MiniMax’s Open Video Model (With an Asterisk) The Batch · 39 Mark Zuckerberg makes his case for American open-source AI over Chinese rivals Fortune · 32 With new open models, Meta pitches another reboot of its struggling AI strategy Ars Technica · 1 month ago · 43
Meta Muse Code vs. Fable 5: Meta Muse is cheaper, but at what cost? The New Stack · 1 month ago · 38
“Learn From Anything You Can Observe”: Zuckerberg Defends AI Distillation, Criticises Closed Labs Trending Topics · 1 month ago · 12
Meta Launches Muse Code to Rival Claude Code and OpenAI’s Codex Trending Topics · 1 month ago · 21

Timeline

Month Quarter Year

September 2026

Meta launches Muse, a personal AI agent that can automate everyday tasks in connected apps for U.S. consumers Deployment

Meta released Muse Spark 1.3, an agentic coding model with efficiency improvements and new availability via Muse Code and the Meta Model API Model release

August 2026

Meta releases Muse Glimmer, a 30B-parameter open-weight model on Hugging Face, and Zuckerberg argues for open-source AI while outlining future open releases Open source release

Meta releases Muse Glimmer, an open-weight multimodal AI agent model with plans to open weights for Muse Spark 1.2 Open source release

Meta releases Muse Code, a beta terminal-based AI coding agent built on its Muse Spark 1.2 model Product launch

Meta releases Muse Code terminal agent and Muse Spark 1.2 coding model Model release

Relationships

Products & technology

  • Meta develops this model · 7 sources
  • Muse Code integrated with this model · 2 sources
  • Muse Code integrated with this model · 2 sources
  • Integrated with Muse Code · 1 source
  • Muse Code derived from this model · 1 source
  • Meta deploys this model · 1 source
  • Muse Spark 1.3 derived from this model · 1 source

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