# Muse Spark Open Tests in Agent Arena

> Meta's Muse Spark Open model enters public testing for AI agent tasks.
- Title: Muse Spark Open Tests in Agent Arena · TokenPost | Shortify
- Summary: Meta's Muse Spark Open model enters public testing for AI agent tasks. Meta released its Muse Spark Open model for public testing in Agent Arena with 816…
- Keywords: muse spark open, agent arena, meta, ai model, multimodal, 816 billion parameters, 42 billion active per token, one million tokens context window, crypto, finance, Muse, Spark
- Source: TokenPost — https://tokenpost.com/news/technology/32977
- Published: 2026-10-16T02:57:42+00:00
- Read time: 1 min
- Topics: muse spark open, agent arena, meta, ai model, multimodal, 816 billion parameters, 42 billion active per token, one million tokens context window, crypto, finance
## Muse Spark Open Launches
Meta's Muse Spark Open entered Arena's Agent Arena on Oct. 15 for public testing with 816 billion parameters and 42 billion active per token.
## Model Capabilities
The model accepts text, images, video, audio and supports coding, extended assignments and multi-step reasoning tasks.
## Public Availability
Muse Spark Open is available via Baseten, Fireworks AI, Groq, Modal, Nebius, OpenRouter, Together AI and Hugging Face.
## Key takeaway

Meta released its Muse Spark Open model for public testing in Agent Arena with 816 billion parameters and multimodal capabilities.