Meta
Meta: Muse Spark 1.3
meta/muse-spark-1.3
Muse Spark 1.3 is a multimodal reasoning model from Meta for long-running agentic, multi-agent, and coding workflows. It is designed to keep track of information across extended tasks, work through conflicting inputs, and request clarification or confirmation when needed, with an emphasis on concise execution.
/ 1M tokens
/ 1M tokens
tokens
Limits
Context
1,048,576
tokens
Max output
943,718
90% of the context window
Model facts
Author
Meta
Tokenizer
Other
Modality
Text + Image + File + Video -> Text
Created
Sep 2, 2026
Reasoning
Publication status
Modalities
Generation controls
Capability scores
Better than 95% of models compared
Better than 88% of models compared
Better than 93% of models compared
Agent tasks
Category performance
1312 Elo
60.8% win
1288 Elo
54.6% win
1244 Elo
51.4% win
1217 Elo
47.6% win
1241 Elo
45.8% win
Creative tasks
Category performance
1397 Elo
63.5% win
1357 Elo
58.2% win
1343 Elo
58.1% win
1351 Elo
57.6% win
1354 Elo
57.3% win
1345 Elo
56.0% win
1283 Elo
54.0% win
1323 Elo
54.0% win