Text to speech: send text, get a natural voiceover MP3 back in the same response. ElevenLabs Eleven v3 (expressive, takes [whispers]-style directions) or Multilingual v2 (29 langua
Text to speech: send text, get a natural voiceover MP3 back in the same response. ElevenLabs Eleven v3 (expressive, takes [whispers]-style directions) or Multilingual v2 (29 languages), a choice of ElevenLabs narrators, up to 3000 characters, $0.42 per 1,000 characters. GET this URL for the voices. No account or API key: the payment is the only credential.
price-ascending: candidates are ordered by the listed price of the operation, with no managed-first preference applied. Unlike /v1/apis, this surface does not rank Apiosk-settled listings above federated ones — a comparison that reorders on commercial grounds is not a comparison. Pass sort=managed_first for the catalog's ordering.
| Provider | Operation | Price | Settlement | Notes |
|---|---|---|---|---|
| Treza | POST /api/x402/speech | $0.04 | via Apiosk | Provider-declared input schema from the Coinbase Bazaar listing |
Compared: listed price, settlement rail and input compatibility. Not measured yet: latency, reliability, result quality, and provider terms such as rate limits, jurisdiction and licensing.