Pricing

One rate. A free tier that renews.

The most accurate medical speech-to-text we've measured — with a free tier that comes back every month, commercial use allowed, and a self-serve BAA on every tier. No subscription. No minimum.

Free

25 hours / month, forever

Every month, forever — not a one-time trial credit.

  • Renews every month — not a one-time credit
  • Commercial use allowed
  • Self-serve BAA and DPA included
  • EU processing · never trained on your audio
  • Full API: async jobs, webhooks, custom vocabulary
  • After free hours and any promotional grant: requests are rejected, never silently billed

Pay-as-you-go

$0.20 / audio-hour beyond free

Add a card; only usage beyond your free hours is billed.

  • No subscription, no minimum, no commitment
  • Your 25 free hours every month stay free
  • Priority under load
  • Published model build (model_build) on every job
  • Invoices only when usage passes $10, or at month end
  • Everything in Free, including the BAA

Enterprise

On request

For teams that need guarantees, not just a rate.

  • Self-hosted deployment in your infrastructure
  • On-device / edge SDK
  • SLA and dedicated capacity
  • Committed volume pricing

A limited founding-partner program (hand-issued codes, capped at 25) takes 50% off the pay-as-you-go rate for 12 months — [email protected].

Why this engine

You're not paying for infrastructure. You're paying for accuracy.

#1 of 29 systems on medical-term accuracy on our open, sealed benchmark: 0.94% M-WER, 0.00% drug M-WER, 5.99% WER.

Best dosage accuracy of 30 systems: 86/89 reference events (96.6% recall, 98.9% precision, F1 97.7%) — the only top-ranked system with zero hallucinated doses; significant vs every competitor (paired bootstrap, p<0.001). Measured on 89 reference dosage events across 63 of 1,513 clips.

Every number above comes from the published methodology — see the full leaderboard and dataset.

The free tier, honestly compared

Recurring beats one-time.

Most STT free tiers are a one-time credit: generous on day one, gone by month two. Ours renews every month, allows commercial use, includes the BAA, and your audio is never used for training. Competitor figures verified against their own pricing pages on 7 August 2026 — this market reprices often, so we date the claim:

Ours is the only free tier we know of where you can sign a BAA without paying anything. Every other API that offers a self-serve BAA requires a paid account first; the rest route you through sales. Recurring forever, commercial use permitted, a medical-specific model, and never trained on — on every tier, including this one.

The fine print, in plain words

How billing behaves

What happens when my free hours run out?

Requests are rejected with a clear error — you are never silently billed. Add a card in the console to keep going at $0.20 per audio-hour, or wait for the monthly reset.

Is the rate going to change under me?

The $0.20/audio-hour rate is public and stable. The only discounting is the hand-issued founding-partner program. Your free allowance is denominated in hours, not dollars.

What does a card on file actually buy?

Uninterrupted service beyond the free hours, priority under load, and the the exact model build that served each request. Payment details are handled by Stripe — they never touch our servers.

Can I use the free tier commercially?

Yes. The free allowance may be used in production, in a commercial product, and with real patient audio. There is no non-commercial restriction and no evaluation-only clause. The Data Processing Agreement is accepted at signup and a Business Associate Agreement can be signed self-serve in the console — on every tier, including this one.

What if you change the free tier or the price?

Your price and your free allowance do not change while your account is active. We may change them for new accounts, and we will give existing accounts at least 30 days’ notice before any change that would affect them. Because the allowance is denominated in hours rather than credit, a future price rise makes your free hours worth more, not fewer.

Start free. Stay free if you want.

25 audio-hours every month, BAA included — add a card only when you outgrow them.