Muse Spark 1.3

Muse Spark 1.3

Developer	Meta
Release date	September 2, 2026
Family	Muse
Generation	Muse 1.3
Level
Context window	1M tokens
Max output	944K tokens
Input	Text, image, video, file
Output	Text
Weights	Closed
Predecessor	Muse Spark 1.2
Website	ai.meta.com

Part of a series on

input: $1.25
cached: $0.15
output: $4.25
Context: 1Mtokens
Released: 2mo ago

Specifications

Model

Developer: Meta
Family: Muse Muse 1.3
Type: Language model
Released: September 2, 2026
Model ID: meta/muse-spark-1.3

Capabilities

Input → output: Text, image, video, file → Text
Max output: 944K tokens
Tokenizer: Other

Weights

Openness: Closed

Sources:models.devOpenRouter

Metadata synced Nov 10, 2026, 8:00 AM UTC

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