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Audexum

Japanese Text to Speech日本語

Generate natural-sounding Japanese audio via REST API. 10 voices, CJK script, 2,000 free credits + 250/day, no credit card.

Start freeTry Japanese in playground
Sample, Japanese (ja-JP)

Audexumへようこそ。開発者やコンテンツクリエイターのための音声合成サービスです。

Try this in the playground

Why Audexum for Japanese

  • Full CJK support: hiragana, katakana, kanji all rendered without phoneme hints
  • Correct pitch accent for standard Tokyo Japanese
  • Japanese TTS market is large, and Japan is the 3rd largest economy
  • Much cheaper than AWS Polly Japanese or Google TTS at high volumes
Competitor coverage

Google Cloud TTS supports Japanese at $16/1M. AWS Polly supports Japanese at $4/1M chars but with limited voices. Audexum is €24.17/1M on the Pro plan with correct pitch accent and a free tier.

Japanese game localization and e-learning

Japan's gaming industry (Nintendo, Sony, Sega) and e-learning sector use TTS for NPC dialogue, learning apps, and automated content pipelines where studio recording is too expensive.

Audexum integrates as a single REST endpoint, no SDK required. Send your Japanese text, receive WAV audio. The free tier (2,000 free credits + 250/day) covers prototyping; paid plans start at €12/month.

First Japanese audio in 60 seconds.

The Japanese language code is ja. Pass it as the lang parameter.

All 10 voices (M1 to M5, F1 to F5) support Japanese. Full API reference: audexum.com/docs.

cURL
curl -X POST https://audexum.com/api/synthesize \
  -H "Authorization: Bearer $AUDEXUM_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "text": "Audexumへようこそ。",
    "voice": "F1",
    "lang": "ja"
  }' \
  --output output.wav
Python
import requests

response = requests.post(
    "https://audexum.com/api/synthesize",
    headers={
        "Authorization": f"Bearer {AUDEXUM_KEY}",
        "Content-Type": "application/json",
    },
    json={
        "text": "Audexumへようこそ。",
        "voice": "F1",
        "lang": "ja",
    },
)
response.raise_for_status()

with open("output.wav", "wb") as f:
    f.write(response.content)

Japanese costs the same as English.

No language surcharge. Japanese is included on every plan at the same rate as any other language. Pack credits never expire, and dictation uses the same balance.

Full pricing details
Free
€0
2,000 + 250/day
Creator
€12/mo
480,000 / mo
Pro
€29/mo
1,200,000 / mo
Scale
€49/mo
4,000,000 / mo
Business
€149/mo
15,000,000 / mo
Credit packs
€7
250,000, never expire

Japanese TTS questions

Does Audexum correctly handle Japanese kanji?

Yes. Kanji are converted to their correct readings using context-aware grapheme-to-phoneme (G2P) lookup. Homographic kanji (same character, different readings based on context) are handled via context disambiguation.

Is Japanese pitch accent included?

Yes. Standard Tokyo Japanese has a pitch accent system where the position of high vs low pitch determines word meaning and grammatical class. Audexum's Japanese synthesis includes pitch accent for natural-sounding output.

Is Japanese on the free tier?

Yes. Japanese is available on the free plan (2,000 credits + 250 a day), no card required. Note: Japanese text is counted by Unicode codepoints, so 2,000 credits cover roughly 25–30 seconds of spoken Japanese, refreshed daily.

How does Audexum compare to AWS Polly for Japanese?

AWS Polly Japanese charges $4/1M chars, which is lower than Audexum's €24.17/1M on the Pro plan. However, Polly has limited Japanese voices and no free ongoing tier. Audexum's monthly free quota and pitch accent quality make it more suitable for small projects and prototyping.

Audexum speaks 32 languages.

Switch language with one parameter. Same endpoint, same price.

Korean TTS koHindi TTS hiArabic TTS ar

See the full language list in the API docs or the multilingual TTS guide.

Try Japanese TTS free.

Create free accountAPI reference