Transcribe audio

Speechmatics

Speech-to-text API that transcribes recorded files and live audio streams into text with timings and speaker labels.

Methods

Method	Used for	How
API key	Batch, realtime and Agent STT, server-side	`Authorization: Bearer $API_KEY` header
Temporary key (JWT)	Client-side realtime and Agent STT calls	`?jwt=$TEMP_KEY` query parameter on the WebSocket URL
Management token	Workspace admin, such as creating projects and API keys	Management API

Source5Authentication

Getting access

Who creates the account: A person signs up in the portal; agent self-sign-up is not stated5
Where to get a key: Portal, Settings > API Keys; Management API with a management token5
Other requirements: Enterprise customers may need to contact support for keys; no card for the free plan14

Read from Speechmatics’s own pages on 2026-11-04. Every number links to the page a value came from. For agents, the same facts as markdown: /tools/transcribe-audio/speechmatics.md