Chirp 3 HD voices (Google Cloud Text-to-Speech)
GA 2025-04-02 (8 speakers, 31 locales), since expanded to 60+ locales. Google's enterprise, non-LLM TTS line; the Gemini-TTS models (gemini-2.5-*-tts, Gemini 3.1 Flash TTS) are offered in the same Cloud TTS API. No 2026 successor (e.g. 'Chirp 4') found.
- Input
- text
- Output
- audio
- License
- proprietary
- Pricing
- per 1m characters: $30 (USD per 1M characters (first 1M chars/month free); Chirp 3 Instant custom voice $60 per 1M characters) source
- Verified
- 2026-09-29
How to call it
| Provider | Model id | Endpoint / URL | Docs |
|---|---|---|---|
| Google Cloud Text-to-Speech API | <locale>-Chirp3-HD-<Voice> (e.g. en-US-Chirp3-HD-Charon) | https://texttospeech.googleapis.com (regions global, us, eu, asia-southeast1, europe-west2, asia-northeast1) | docs |
Notable capabilities (2)
- Streaming HD voices in 60+ locales: 28 named voices, streaming and batch synthesis, pace (0.25-2x), pause and IPA/X-SAMPA pronunciation controls, SSML. source
- Instant custom voice (found after launch): Chirp 3 Instant custom voice clones a voice from a short sample (30+ locales), priced at $60 per 1M characters. source
Sources: Chirp 3 HD docs, Cloud TTS release notes, pricing.