Pricing & billing
The pricing model is one sentence: you pay exactly what the provider charges us, at their public list price, and we add nothing.
Native units
Section titled “Native units”Each model is priced in its vendor’s own unit — no lossy conversions:
| Unit | Example |
|---|---|
| per audio-minute | deepgram/nova-3 — $0.0048/min |
| per audio-hour | speechmatics/melia-1 — $0.129/hr |
| per session-hour | soniox/stt-rt-v5 — $0.12/hr wall-clock |
| minimum per request | aws/* — 15s minimum, groq/* — 10s minimum |
Session-billed models (Soniox realtime, AssemblyAI streaming) meter on wall-clock connection time — an open socket bills even when silent, because that’s how the vendor bills us. Everything else meters on audio duration.
Current prices for every model: GET /v1/models
or the providers pages — both are generated from the same
catalog the billing engine uses, so they cannot drift from what you’re charged.
Credits
Section titled “Credits”Prepaid credits, minimum $5 top-up via Stripe, never expire. New accounts get a
$2 welcome credit on email verification. When the balance hits zero, new
sessions are rejected with insufficient_credits (running sessions finish).
The ledger
Section titled “The ledger”Every session writes a usage event with the model, audio seconds, billed seconds, and price in micro-dollars — visible in the console’s billing ledger. Sub-cent amounts display to five decimals; we never round a real debit to a lying $0.00.
BYOK sessions bill $0.00.