Muse Spark 1.3
Meta’s multimodal reasoning model for long-running agents and coding.
Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent and coding workflows, designed to keep track of information across extended tasks. It accepts text, images, files and video with a 1M-token context.
- Provider
- Meta
- Type
- Language model
- Released
- Sep 2, 2026
- Context window
- 1M tokens
- Max output
- 944K tokens
- Price
- $1.25 input / $4.25 output per 1M tokens
- Input
- text, image, file, video
- Output
- text
- Open weights
- No
Best for
- Agents
- Coding
- Reasoning
- Multimodal
- Long context
Strengths
- Intelligence Index 48 at max effort
- 1M context
- Video input
More from Meta
- Llama 4 Maverick — Meta. Meta’s 128-expert open multimodal MoE model.
- Llama 4 Scout — Meta. Efficient open model with an industry-leading 10M-token native context.
- Muse Image — Meta. Meta’s low-cost image model.
- V-JEPA 2 — Meta. Meta’s open JEPA world model for video understanding, prediction and robot planning.
- Llama Guard 4 12B — Meta. Open multimodal safety classifier for prompts and responses.
Tools that use it
- Meta AI — Meta. Meta’s assistant across WhatsApp, Instagram, Facebook and glasses.