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Cartesia vs Speaches: catalog facts
Cartesia	Speaches
Paid Plans are listed on the pricing page, with a sales contact for larger deployments.	Free Free and open source under the MIT licence.
Web	Self-hosted
One API covers text-to-speech, transcription and voice agents Built for low-latency, real-time conversation	Drop-in replacement for OpenAI's speech and transcription endpoints Streaming transcription over SSE
Mainly an API for developers rather than a consumer app Cloud only, with no local option	A server with an API, not an end-user app Setup is based on Docker
Hosted service	Self-hosted
Closed source	Open source
License not stated	License: MIT
Account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

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