Japanese Text to Speech日本語
Generate natural-sounding Japanese audio via REST API. 10 voices, CJK script, free 30,000 credits/month — no credit card.
- Full CJK support — hiragana, katakana, kanji all rendered without phoneme hints
- Correct pitch accent for standard Tokyo Japanese
- Japanese TTS market is large — Japan is the 3rd largest economy
- Much cheaper than AWS Polly Japanese or Google TTS at high volumes
Google Cloud TTS supports Japanese at $16/1M. AWS Polly supports Japanese at $4/1M chars but with limited voices. Audexum is €10/1M 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 (30,000 credits/month) covers prototyping; paid plans start at €4/month for 250,000 credits.
First Japanese audio in 60 seconds.
The Japanese language code is ja — pass it as the lang parameter.
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.wavimport 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)Full API reference: audexum.com/docs. All 10 voices (M1–M5, F1–F5) support Japanese.
Japanese TTS — same price as English.
No language surcharge. Japanese is included on every plan at the same rate as any other language.
PAYG credits never expire. All plans include STT (dictation) at no extra cost. Full pricing details →
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 30,000 credits/month free plan — no card required. Note: Japanese text is counted by Unicode codepoints, so 30,000 credits cover roughly 6–8 minutes of spoken Japanese.
How does Audexum compare to AWS Polly for Japanese?+
AWS Polly Japanese charges $4/1M chars, which is lower than Audexum's €10/1M 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 supports 33 languages.
Switch language with one parameter — same API endpoint, same pricing.
See the full 33-language list in the API docs or on the multilingual TTS guide.
Try Japanese TTS free.
30,000 credits per month, no credit card. First Japanese WAV in your terminal in 60 seconds.
Questions? [email protected]