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Speechmatics vs Speaches: catalog facts
Speechmatics	Speaches
Best for: Developers adding speech recognition to voice agents or transcription products	Best for: Developers who want local speech-to-text and text-to-speech behind an OpenAI-style API
Free + paid options A free start is offered, with paid usage and enterprise plans through sales.	Free Free and open source under the MIT licence.
Web	Self-hosted
Real-time and batch transcription in many languages Speaker diarization and identification All 4 strengths for Speechmatics Real-time and batch transcription in many languages Speaker diarization and identification Cloud, on-premises and on-device deployment options Integrations with LiveKit, Pipecat, Vapi and Zapier	Drop-in replacement for OpenAI's speech and transcription endpoints Streaming transcription over SSE All 4 strengths for Speaches Drop-in replacement for OpenAI's speech and transcription endpoints Streaming transcription over SSE Loads and unloads models automatically on demand Kokoro and Piper voices for text-to-speech
Built mainly for developers working with an API On-premises and enterprise options require contacting sales	A server with an API, not an end-user app Setup is based on Docker
Hosted service	Self-hosted
Not open source	Open source
License not stated	License: MIT
Account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Speechmatics speechmatics.com Catalog checked October 2, 2026	Official website Full listing and sources Sources for Speaches speaches.ai github.com/speaches-ai/speaches Catalog checked September 26, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.