Muse Spark 1.3
Meta developed Muse Spark 1.3 as a multimodal reasoning model designed for complex, long-running agentic and coding workflows. It supports input from text, images, video, and files, and is built to maintain information across extended tasks.
Muse Spark 1.3 specs and pricing
- Provider: Meta
- Released: September 2, 2026
- Context window: 1M tokens
- Max output: 944K tokens
- Input: text, images, video, files
- Output: text
- Price: $1.25 input / $4.25 output per 1M tokens
- Reasoning: yes
- Tool calling: yes
What Muse Spark 1.3 is good at
- Managing complex, multi-step coding projects
- Analyzing information from long-form video or document archives
- Coordinating multi-agent workflows
To-dos to try with Muse Spark 1.3
- Upload a video of a software bug and ask the model to identify the timestamp where the error occurs.
- Provide a large codebase and ask the model to refactor specific modules while maintaining existing functionality.
- Upload multiple project documents and ask the model to synthesize them into a unified project timeline.
FAQ
- What types of media can Muse Spark 1.3 process? The model accepts text, images, video, and file uploads as input.
- What is the primary purpose of this model? It is designed for agentic, multi-agent, and coding workflows that require reasoning over extended periods.
- How much does Muse Spark 1.3 cost? Muse Spark 1.3 costs $1.25 per million input tokens and $4.25 per million output tokens through OpenRouter. In todo.is a typical agent step costs about 4.1 credits ($1 = 100 credits).
- What is the context window of Muse Spark 1.3? Muse Spark 1.3 can read up to 1M tokens at once and write up to 944K tokens in one reply.
- Can I use Muse Spark 1.3 without coding? Yes. In todo.is you pick Muse Spark 1.3 as your agent's model and write to-dos in plain words, on the web, the Android app, WhatsApp or Telegram. No API key needed: credits are included, or you can bring your own key.
JavaScript is required to use the todo.is app.