Choose bandwidth plans or usage-based API billing.
Flat bandwidth plans for WebRTC products and usage-based prepaid APIs for speech, translation, files, vision and moderation.
Prepaid gateway rates
| Service | USD | Billing unit |
|---|---|---|
| WebRTC | $0.0001 | audio participant minute |
| Streaming STT | $0.004 | connected STT session minute |
| Streaming TTS | $0.006 | 1,000 spoken Unicode code points |
| File transcription + diarization | $0.002 | decoded audio minute; ceil seconds × 2000/60 microcredits, rounded up once/file |
| Text/SSML to WAV | $0.006 | 1,000 expanded spoken Unicode code points |
| Translation | $5 | 1 million input Unicode code points |
| Vision snapshots | $0.001 | completed snapshot |
| Audio moderation | $0.004 | submitted audio minute |
| Image/frame moderation | $0.0005 | completed image/frame |
Minimum purchase: $0.10. One USD equals 1,000,000 microcredits. Buy credits through the gateway, then authenticate requests with wallet signatures. Live pricing and enabled services are authoritative.
Voice-agent example
Two audio participants ($0.0002/min) + one STT session ($0.004/min) + 367 spoken TTS characters/min ($0.002202) = approximately $0.0064/minute, excluding LLM charges. Actual usage determines cost; a bundled session is not a flat-rate product.
How usage is counted
Live STT meters connected ready-session time. Uploaded transcription meters decoded duration, rounded up once per file to a whole second, with diarization included. TTS meters spoken Unicode code points; SSML tags and breaks do not count, expanded aliases do. WAV jobs settle only completed valid output. Moderation meters submitted PCM samples or completed frames; $0.006/min applies to frames only when you submit 12 frames/minute.
Partials, Smart Turn, SSML and optional watermark have no additional price multiplier. Successful work is charged once; deleting results does not refund it. Results and WAV downloads are private and retained for 24 hours.
WebRTC bandwidth plans
Recurring WebRTC products can use separate flat bandwidth plans with unlimited minutes. See Video SDK pricing for current tiers. Those plans are separate from the gateway's per-participant rate.