Natural English text-to-speech with 28 voices (American and British, female and
Natural English text-to-speech with 28 voices (American and British, female and male; Kokoro-82M, open-licensed). Returns MP3 or WAV. Default voice af_heart; list voices at GET /v1/voices. Runs at about real time: 1,000 characters take about a minute. Priced per character.
Answeringour last check, 2026-10-11
1 of 1checks answered this week
1138 msmedian answer time
$0.002listed price per call
$0.002price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.language123.net/v1/tts
| Category | Image and media |
|---|---|
| Provider host | api.language123.net |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 2 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-11 | valid payment request | 402 | $0.002 | 1138 ms |
Example input (from the provider)
{
"body": {
"format": "mp3",
"text": "Hello! Your order has shipped.",
"voice_id": "af_heart"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"format": {
"enum": [
"mp3",
"wav"
],
"type": "string"
},
"speed": {
"maximum": 2,
"minimum": 0.5,
"type": "number"
},
"text": {
"description": "Text to speak (price is per 1,000 characters)",
"type": "string"
},
"voice_id": {
"description": "Voice from GET /v1/voices (default af_heart when available)",
"type": "string"
}
},
"required": [
"text"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"contentEncoding": "binary",
"contentMediaType": "audio/mpeg",
"type": "string"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}