Muse Spark 1.3
Muse Spark 1.3 is a proprietary Meta multimodal reasoning model for coding and agentic knowledge work. The 1.3 update improves long instruction adherence, multi-task coordination, self-awareness of task limits, and cooperation with users during extended work. It accepts text, images, video, and audio and produces text; the API specifies a 1,048,576-token context for these versions. Standard and, where offered, Contributor access use the same model capabilities but different data-use terms. Contributor access is a serving tier rather than a separate model. Future open-weight plans are not a weight release.
2026-09-02
Undisclosed
Proprietary
Specifications
- Architecture
- Undisclosed
- License
- Proprietary
- Context Window
- 1,048,576 tokens
- Type
- multimodal
- Modalities
- textimagevideoaudio
Benchmark Scores
Advanced Specifications
- Model Family
- Muse Spark
- API Access
- Available
- Chat Interface
- Not Available
- Variants
- StandardContributor
Capabilities & Limitations
- Capabilities
- codingreasoningmultimodal understandingtool uselong-running agents
- Known Limitations
- Weights are not publicly availableAudio understanding is not fully supported in 1.3; use 1.2 for audio
- Notable Use Cases
- software engineeringmultimodal agentsdocument and video analysis
- Tool Use Support
- Yes