Muse Spark Open

Muse Spark Open

Developer	Meta
Listed	October 15, 2026
Family	Muse
Architecture	muse-spark
Context window	1M tokens
Max output	262K tokens
Input	Text, image, video, file, audio
Output	Text
Knowledge cutoff	2026-01-04
Weights	Open weights
License	Muse Model License
Website	ai.meta.com
Links	Model card Hugging Face

Part of a series on

input: $1.25
cached: $0.15
output: $4.25
Context: 1Mtokens
Listed: 4w ago
Size: 822Bparameters

Specifications

Model

Developer: Meta
Family: Muse
Type: Language model
Listed on OpenRouter: October 15, 2026
Model ID: meta/muse-spark-open

Capabilities

Input → output: Text, image, video, file, audio → Text
Native context: 1M tokens
Max output: 262K tokens
Tokenizer: Other
Knowledge cutoff: 2026-01-04

Weights

Openness: Open weights
License: Muse Model License
Size: 822B
Architecture: muse-spark
Families: muse-spark
Hugging Face: meta-models/Muse-Spark-Open-816B-A42B

Sources:models.devOpenRouter

Metadata synced Nov 3, 2026, 11:17 PM UTC

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