Text to speech

Text → natural speech audio, ready to embed. Voice notes, IVR lines, narration.

POST/v1/speak$0.05/clip, 5 credits, charged only on success60 calls a minute per key

The example in the published schema

charged 0 credits

auth (bearer key)
per-key throttle
validate body
balance precheck
run the capability
charge credits ON SUCCESS ONLY
JSON

A successful call costs 5 credits, $0.05/clip. A failed call costs nothing.

The request body/v1/speak

{
  "text": "Your order has shipped and will arrive Thursday.",
  "pace": "normal"
}

The responsepublished example

// sending the call
// 0 credits charged so far

curl https://api.thecompound.tech/v1/speak \
  -H "Authorization: Bearer $COMPOUND_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text":"Your order has shipped and will arrive Thursday.","pace":"normal"}'

Scored

3 of 3 field checks passed when the eval suite last ran against production, on 2026-07-08. Every endpoint's score

The Media & agents guide has this endpoint with its example response. The reference has every parameter.

More from Media & agents

Transcription pausedAn audio recording → accurate text with speakers and paragraph timestamps. Meetings, calls, voice notes.Agent memory $0.02/operationStore, search, and forget memories for your agents, semantic recall on your own namespace, no vector DB to run.Image generation $0.10/imageA prompt → a production-ready image. Marketing visuals, product scenes, and consistent brand imagery.

Get a key and buy credits