Accurate, secure, and scalable AI-powered speech-to-text and text-to-speech APIs for global voice AI applications.
Speechmatics offers advanced AI speech technology delivering high-accuracy, low-latency speech-to-text and text-to-speech services across 55+ languages. Designed for enterprises with global reach, it supports real-time transcription, multilingual conversations, and speaker diarization, enabling powerful voice AI agents and live captioning. The platform ensures enterprise-grade security with flexible deployment options including cloud, on-premises, and on-device.
Updated Oct 18, 2026
Was using a different transcription provider before, but as soon as I switched over to Speechmatics the uplift in accuracy has been immense. The real-time engine is excellent – latency is fantastic and incredibly accuracy across a ton of languages.
Was using a different transcription provider before, but as soon as I switched over to Speechmatics the uplift in accuracy has been immense. The real-time engine is excellent – latency is fantastic and incredibly accuracy across a ton of languages.
Transcribe 55+ languages with a single model, even when speakers switch between languages naturally throughout a conversation.
Deliver reliable transcription across accented speech, background noise, and multi-speaker conversations, not just clean recordings.
Yes. Speaker diarization identifies and separates individual speakers in meetings, calls, legal proceedings, and healthcare consultations.
Select the model that best fits your use case, whether you need maximum accuracy, multilingual performance, or lower latency and cost.
Get the very best performance whether you're transcribing pre-recorded files or live audio.
Process thousands of hours of pre-recorded files, whenever you need them, and fast.
Transcribe media as it happens. Get initial transcriptions in milliseconds , with context-driven accuracy improvements over time.
Custom
on request
A speech-to-text API converts spoken audio into written text inside an app, product or workflow. Speechmatics can process recorded files or live audio, then return transcripts for captions, search, analytics, records and voice AI.
Run Speechmatics on device, on prem and in the cloud depending on your privacy needs. We don’t log your data as standard.
A speech-to-text API with three ways to deploy it: cloud, on-prem, or on-device.
Batch and real-time transcription, speaker diarization, translation, and summarization, in one API.
Get secure and scalable access to our API through our cloud deployment and get instant access to all our new features, languages and updates.
You?Hands-on notes from our editorial team.
✅ Our Test
The first step is usual for us; we signed up on the website using our Google account.
Then we clicked on the “Create” button on the main dashboard, and the website suggested choosing the way we like to input our audio. Here, our choice was to upload the video file.
After that, we customized some settings, like the source language and output materials.
Then just one click on the button in the lower right corner, the tool started uploading and proceeding with our file. It took some time because of connection speed, but we got the results pretty fast.
We viewed an accurate transcription of our video file and checked up on some information, like the summary and chapters. By clicking on the download button, we could download anything in available file formats.
Top rated tools from the same category.
View all Speech-to-Text API tools
Industry-leading AI models to transcribe and understand speech with unmatched accuracy and scalability.
Enterprise-grade Voice AI APIs for real-time speech-to-text, text-to-speech, and conversational voice agents.
The speech-to-text backbone for voice platforms with real-time, multilingual transcription and unbeatable accuracy.
