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AssemblyAI · First-party API · LLM

muse-spark-open

Release announcedReleased on Oct 15, 2026

AssemblyAI released muse-spark-open on Oct 15, 2026. Source: assemblyai.com · Last checked Oct 23, 2026

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Release announced

Released on Oct 15, 2026

AssemblyAI announced this model on 2026-10-15.

Hosting route
First-party API
Affected scope
Not stated in the notice
Announced
Oct 15, 2026
First seen by ModelClock
Oct 20, 2026

What the provider published

assemblyai.com ↗

# Muse Spark Open Now Available on the LLM Gateway

Muse Spark Open is now available through the LLM Gateway as muse-spark-open . It has a 1M-token context window and supports tool calling, structured outputs, and streaming…

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Muse Spark Open is now available through the LLM Gateway as muse-spark-open. It has a 1M-token context window and supports tool calling, structured outputs, and streaming.

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