Muse Spark Open

Name: Muse Spark Open
Brand: Charm Hyper

by Charm Hyper · family muse · listed Oct 2026RTVW

Muse Spark Open is an 816B total / 42B active open-weight multimodal reasoning model from Meta for coding and long-horizon agentic work, with 1M-token context.

Current rates USD per 1M tokens

Input$1.40

Output$4.65

Cache read$0.17

Cache write—

Against the market

Input price vs. maker flagships ($/1M tokens)

Output price vs. maker flagships ($/1M tokens)

On the record

Model id: muse-spark-open
Context window: 1.0M tokens
Max output: 1.0M tokens
Input modalities: text, image
Output modalities: text
Reasoning: yes
Tool calls: yes
Open weights: yes
Knowledge cutoff: Jan 2026
Released: 2026-10-15
Last updated: 2026-10-15
Provider docs: hyper.charm.land

Back of the envelope

Input M tokensOutput M tokens

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