S

Text to Speech

API service

by Speechmatics

Speechmatics' text-to-speech API generates streaming synthetic English speech from text with sub-150ms latency using four named voices (Sarah, Theo, Megan, Jack), aimed at real-time voice agent use.

Find alternatives to Text to Speech

Pricing page lists Text-to-Speech at $0.011 per 1,000 characters on Pro and Enterprise, with basic Text-to-Speech included in the Free plan's $100 credit. The docs quickstart states 'Text to speech is currently in preview and free to use' and serves it from preview.tts.speechmatics.com - the marketing rate card and the docs disagree on whether preview usage is billed, recorded rather than resolved. Enterprise is custom-quoted.

What it does

• Text to speech

Sources

Pricing

Pricing page · 5 Sep 2026

Text-to-Speech row reads $0.011/1k characters across Pro and Enterprise. Floor: Free plan includes basic Text-to-Speech within the $100 credit; docs say preview usage is free. Floor $0.

Description

Official documentation · 5 Sep 2026

Page markets sub-150ms latency, streaming-first design, English (British and American) only, voices Sarah, Theo, Jack, Megan.

Sold within

Live re-check 2026-09-15: speechmatics.com/pricing lists Text-to-Speech with its own rate, sold as a distinct offering, no parent bundle required.

Also from Speechmatics

• Speech to Text API API service

  Speechmatics' automatic speech recognition API transcribes audio into text in 55+ languages in either real-time streaming or batch mode, with speaker diarization, custom dictionary, translation and summarization options.

• Voice Agent API API service

  Speechmatics' voice agent offering provides a real-time conversational speech API - including the Flow WebSocket endpoint that chains speech-to-text, an LLM, text-to-speech and function calling - plus a Python Voice SDK for turn detection and speaker management, and integrations with Vapi, LiveKit and Pipecat.

• On-Device Speech to Text Developer tool

  A locally-executing speech-to-text engine for Mac and Windows laptops that runs on about one CPU core plus the device's neural engine or GPU and roughly 800MB of memory, sending no audio over a network and claiming accuracy within 5% of the cloud API.

• Translation API service

  Translates a transcript into other languages in the same API call that produces it, for files or live audio. It is a feature switched on inside a Speech to Text request rather than a separate product; the docs file it under Speech to Text and return the translations alongside the transcript.

• Summarization API service

  Generates a short summary of an audio file in the same API call that transcribes it, as paragraphs or bullets. It is a Speech Intelligence feature enabled by adding a config block to a batch Speech to Text job, not a product bought on its own.

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