Meta's Muse Spark Open goes live on Together AI

Meta's open-weight model Muse Spark Open launched on Together AI today, aimed at long-running agentic coding workflows. It offers a 1M-token context window and supports sub-agent collaboration, tool calls, computer use and web browsing, and accepts text, image, audio and audio-video input.

Why it matters: Together AI serves Muse Spark Open on launch day and publishes per-item pricing, giving a clear basis for both access and call cost on a long-task model.