Clinical speech to text that outperforms OpenAI Whisper
Whisper wasn't built for the accuracy requirements of healthcare. Corti Speech to Text is clinical-grade: accurate, fast, and sovereign, with up to 99% accuracy on clinical speech and models across 46 languages.
Trusted for more than 1 million interactions every week
OpenAI Whisper wasn't built for production grade clinical deployments
The errors land on drug names and doses
Keyterm biasing cuts missed medical terms by roughly half, with precision holding above 96%. No retraining, no per-site model.
Bad microphones get flagged mid-visit
Audio health events surface degrading signal in real time, so you can prompt a re-record before a bad transcript reaches a clinician.
EU residency without a workaround
Pick the region your customers require. Sovereign cloud or on-premises, on infrastructure already running national health systems.
Transcript is the first call, not the last
Structured facts, note generation, and ICD-10 and CPT coding are on the same platform, so your second feature isn't a second vendor.
The most accurate clinical speech to text available
We publish the numbers and the methodology so you can verify them rather than trust them. Ranked first across speech recognition, medical coding, clinical reasoning, and agents.
Corti and Speechmatics, feature by feature
Every row above is testable before you talk to us.
$0.0065 per minute. Everything included.
One rate for the whole clinical-grade pipeline. No add-on line items for diarization, multi-speaker, PII handling, or post-processing, because they're all part of the same request.
- One rate for realtime, async, and dictation
- One credit balance across every Corti API
- Same credits for development, testing, and production
Switching to Corti is easy
Getting started is easy with our AI Studio, detailed guides, and clear documentation. Go ahead. Take it for a spin and get $50 in free credits.
- Test models in AI Studio before you write a line of code
- SDKs for JavaScript, C# .NET, and Python, plus a Postman collection
- Run it alongside your current provider until you're convinced
Patient presents with paroxysmal atrial fibrillation, started on apixaban 5mg BD.
Patient presents with paroxysmal atrial fibrilation, started on epixaban 5mg BD.
Illustrative only
run it yourself
Don't take our word for it. Say something clinical.
Open the compare tool, speak into your microphone, and watch Corti Symphony transcribe alongside the general-purpose models in real time. Same audio, same moment, side by side.
- Live microphone input, no upload and no sign-up
- Try the terms your product actually has to get right
- Medical and general models in the same view
Your next feature is already on the platform
How we build and measure the speech layer
Symphony for Speech-to-Text
Clinical-grade models for realtime dictation, conversational transcription, and batch processing, with up to 93% lower word error rate than generalist speech APIs.
Better alignment, better evaluation
Why standard word error rate hides the errors that matter clinically, and the evaluation paradigm we use instead.
Introducing Medical Term Recall
From everyday language to clinical precision. Measuring whether a model catches the drug names, dosages, and findings a note depends on.
Everything about the speech layer, in one place.
Frequently asked questions
How do you compare on general, non-clinical audio?
We're best in class on general audio too. The difference is that clinical speech is where we're built to shine, and where the gap widens most: medical vocabulary, dosages, measurements, and formatting.
What does switching actually involve?
Open a stream, send audio, handle transcript events. Most teams have a parallel integration running on real audio in an afternoon, then cut over once they've seen the accuracy difference on their own recordings.
What does sovereign deployment actually mean here?
Your audio is processed on infrastructure we operate, in the region you choose, under that region's law. Sovereign cloud or fully on-premises, with attested hardware and no US cloud provider in the request path. It's the same platform running national health systems today, so the compliance posture comes with it rather than being bolted on.
What about Where does the audio live?specialty-specific templates?
EU or US, determined by the environment and tenant you provision. Nothing crosses the boundary you pick, and on-premises is available if your customers need the audio to stay inside their own perimeter.
Which languages do you support?
46 languages across three performance tiers. Premier covers English, German, French, Danish, Swiss French, and Swiss High German with 100,000+ validated medical terms. Enhanced adds optimised medical vocabulary in languages including Arabic, Dutch, Spanish, Swedish, Norwegian, Finnish, Hungarian, and Swiss German. Base covers the rest for general clinical recognition.
How do you handle vocabulary we can't predict in advance?
Pass keyterms with the request. Biasing toward site-specific or specialty-specific vocabulary cuts missed medical terms by roughly half while precision holds above 96%. No retraining, no per-customer model, and it works across any supported language.
What happens when the audio quality is bad?
Audio health events flag degrading signal in real time, so you can trigger fallback logic, prompt a re-record, or warn the clinician before a bad transcript reaches a downstream workflow. Microphone placement and ambient noise vary by room, so this matters more in practice than most accuracy claims.
Do you support dictation as well as conversational transcription?
Yes. A separate real-time dictation endpoint with voice commands, custom vocabulary, text replacements, and device button mapping. Many teams ship both, since some specialties still prefer dictation.
What does it cost?
Usage-based, with $50 of free credits to start and no card required. One credit balance covers every Corti API, and the same credits work across development, testing, and production.