models/Kokoro/Kokoro TTS (Japanese)

Kokoro TTS (Japanese)

music

A fast and natural-sounding Japanese text-to-speech model optimized for smooth pronunciation.

Kokoro TTS (Japanese) (kokoro/kokoro-japanese) is a music model from Kokoro. Pricing via AIgateway: $0.020 per second. Call it via https://api.aigateway.sh/v1/audio/music — set model="kokoro/kokoro-japanese". Best for: Background tracks, Game scores, Ad jingles.

slug · kokoro/kokoro-japaneseprovider · Kokoro

Use this model

model: kokoro/kokoro-japanese
curl https://api.aigateway.sh/v1/audio/music \
  -H "Authorization: Bearer $AIGATEWAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"kokoro/kokoro-japanese","prompt":"lo-fi piano with light rain","duration":15}'

Capabilities

Strengths

  • Full-track generation
  • Lyric-aware composition

Use cases

Background tracksGame scoresAd jingles

Pricing

Per video second$0.020
You pay pass-through · 5% applied at credit top-up, not per-call.
Try in playground →CompareAPI referenceSee usage ranking →

Collections

More text models →More from Kokoro →Frontier models →Free-tier models →
API schema

Call Kokoro TTS (Japanese) from any OpenAI SDK

POST https://api.aigateway.sh/v1/audio/music·Content-Type: application/json·Auth: Bearer sk-aig-...

Request body

json
{
  "model": "kokoro/kokoro-japanese",
  "prompt": "Lo-fi hip-hop with vinyl crackle and warm Rhodes piano",
  "lyrics": "Optional — leave empty for instrumental",
  "duration": 30,         // seconds
  "format": "mp3"         // mp3 | wav
}

// Response is an async job — poll /v1/jobs/<id> until status === "completed".

Response

json
{
  "id": "job_abc123",
  "status": "queued",
  "model": "kokoro/kokoro-japanese",
  "created": 1776947082
}

// After completion:
{
  "id": "job_abc123",
  "status": "completed",
  "result": {
    "url": "https://media.aigateway.sh/music/abc123.mp3",
    "duration": 30
  }
}

Quickstart

# See docs at https://aigateway.sh/docs

Errors

401authentication_errorInvalid or missing API key
402insufficient_creditsWallet empty (PAYG only)
404not_foundUnknown model or endpoint
429rate_limit_errorOver per-minute limit — see Retry-After header
500server_errorUpstream provider failed (retryable)
503service_unavailableUpstream saturated (retryable)
Full docs →API reference →OpenAPI spec →llms.txt →

Frequently asked questions

What is Kokoro TTS (Japanese)?
A fast and natural-sounding Japanese text-to-speech model optimized for smooth pronunciation. It is a music model from Kokoro, accessible via AIgateway's OpenAI-compatible API at slug kokoro/kokoro-japanese.
How much does Kokoro TTS (Japanese) cost via AIgateway?
Pass-through pricing plus a 5% platform fee applied at top-up. See the pricing panel on this page for exact rates.
How do I call Kokoro TTS (Japanese) from my code?
Point the OpenAI SDK at https://api.aigateway.sh/v1 with your AIgateway key and set model to "kokoro/kokoro-japanese". The request and response shapes match OpenAI exactly.
Does Kokoro TTS (Japanese) support streaming, tool calling, vision, and JSON mode?
Streaming — no. Tool calling — no. Vision — no. JSON mode — no. Prompt caching — no.
What are the best use cases for Kokoro TTS (Japanese)?
Background tracks, Game scores, Ad jingles. Key strengths: Full-track generation; Lyric-aware composition.
Can I bring my own Kokoro API key (BYOK)?
Yes. Attach a Kokoro key in your AIgateway dashboard and this model flips to pass-through — you pay Kokoro directly and AIgateway waives the 5% platform fee on those calls.