Meta Releases Muse Spark 1.1 with API Access and Enhanced Tool Calling

Meta has released Muse Spark 1.1, the first model in the Spark series to offer API access. The company claims significant improvements in agentic tool calling and computer use compared to the original Muse Spark released in April 2026.

The release marks a shift from the demo-only access of the original Muse Spark to a production-ready API that developers can integrate into applications.

Technical Details

Meta published a Muse Spark 1.1 Evaluation Report with additional technical details, though specific benchmark scores and pricing information have not yet been disclosed.

According to Meta, the model shows particular strength in:

• Agentic tool calling capabilities
• Computer use tasks
• SVG generation (demonstrated in early testing)

Developer Access

The model is accessible through Meta's API and can be used via the new llm-meta-ai plugin for the LLM command-line tool. Installation requires:

uv tool install llm
llm install llm-meta-ai
llm keys set meta-ai
llm -m meta-ai/muse-spark-1.1 "your prompt"

Early testing shows the model can generate SVG graphics, with one example successfully producing a recognizable pelican on a bicycle, though with somewhat blocky rendering.

What This Means

Muse Spark 1.1 represents Meta's move from experimental model releases to production-ready APIs. The focus on tool calling and computer use suggests Meta is positioning Spark as an agentic model to compete with Claude's computer use capabilities and OpenAI's function calling features. However, without published benchmark scores or pricing details, it's difficult to assess how Muse Spark 1.1 compares to existing models in the category. The release of an official API and developer tools indicates Meta is serious about this model line, following the pattern set by Llama of moving from research releases to production deployments.