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Speaches vs AssemblyAI: catalog facts
Speaches	AssemblyAI
Free Free and open source under the MIT licence.	Paid Commercial API service; see the site for current rates.
Self-hosted	Web
Drop-in replacement for OpenAI's speech and transcription endpoints Streaming transcription over SSE	Realtime and pre-recorded transcription in 99 languages Speech understanding and dictation APIs alongside transcription
A server with an API, not an end-user app Setup is based on Docker	Built for developers, not a ready-made transcription app Cloud API by default
Self-hosted	Hosted service
Open source	Closed source
License: MIT	License not stated
No account needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.