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Google Cloud Text-to-Speech
What it is
Google Cloud Text-to-Speech is an API that converts text or SSML into audio data for applications. It offers more than 380 voices across more than 75 languages and variants, with requests through REST or gRPC and exports including MP3, LINEAR16, OGG_OPUS, MULAW, and ALAW. Gemini-TTS supports single- and multispeaker output, with natural-language prompts to guide style, accent, pace, tone, and emotional expression. Chirp 3 instant custom voice can create personalized voice models from as little as 10 seconds of audio and is available in more than 30 locales. Streaming synthesis is available for real-time conversations, while long-audio synthesis accepts up to 1 million bytes of input. The API also offers pitch, speaking-rate, and volume controls. Listed uses include contact-center voicebots, voice generation in devices, and accessible electronic program guides. Billing counts input characters, including spaces, newlines, and most SSML tags, and billing must be enabled. Voice pricing varies: Standard and WaveNet are billed at US$4 per 1 million characters, with 0 to 4 million characters free. New customers can receive $300 in Google Cloud credits to try this and other Google Cloud products.
For and against
For
- More than 380 voices across 75-plus languages and variants
- REST and gRPC integration
- Streaming synthesis supports real-time conversations
- Multiple audio export formats
- New customers can receive $300 in Google Cloud credits
Against
- Billing must be enabled to use the service
- Billing counts input characters, including spaces and newlines
- Voice pricing and free usage limits vary by model
The verdict
Google Cloud Text-to-Speech offers a wide voice selection and several synthesis modes through an API. Review the model-specific rates and character-based billing rules to estimate usage costs.
Who it suits
The API suits developers adding generated speech to applications, including contact-center voicebots, devices, or accessible electronic program guides. Its voice options and controls may also suit teams seeking prompted, multispeaker, or custom voice output.
Plans and prices
Standard voices
0–4 million characters free
Read 15 Oct 2026 · cloud.google.com
WaveNet voices
0–4 million characters free
Read 15 Oct 2026 · cloud.google.com
Neural2 voices
0–1 million characters free
Read 15 Oct 2026 · cloud.google.com
Polyglot voices
1 million characters free usage
Read 20 Sep 2026 · cloud.google.com
Chirp 3: HD voices
0–1 million characters free · low-latency streaming · expressive conversational voices
Read 15 Oct 2026 · cloud.google.com
Studio voices
0–1 million characters free
Read 15 Oct 2026 · cloud.google.com
Instant custom voice
no free usage · personalized voice models
Read 15 Oct 2026 · cloud.google.com
Gemini 2.5 Flash TTS and Gemini 2.5 Flash-Lite Preview TTS
Input: $0.50 per 1 million text tokens · Output: $10.00 per 1 million audio tokens · No free usage limit listed
Read 20 Sep 2026 · cloud.google.com
Gemini 3.1 Flash TTS
Preview · Input: $1.00 per 1 million text tokens · Output: $20.00 per 1 million audio tokens · No free usage limit listed
Read 20 Sep 2026 · cloud.google.com
On the record
- API access
- Yescloud.google.com · read 20 Sep 2026
- API positioning
- The product is an API powered by Google AI technologies for generating natural-sounding speech.cloud.google.com · read 15 Oct 2026
- Audio formats
- The service can return formats including MP3, Linear16 and OGG Opus.getapp.com · read 15 Oct 2026
- Authentication
- Client libraries support Application Default Credentials for programmatic authentication.docs.cloud.google.com · read 15 Oct 2026
- Billing limit
- Billing counts input characters including spaces, newlines, and SSML tags except the mark tag, and billing must be enabled to use the service.cloud.google.com · read 4 Oct 2026
- Chirp 3 HD
- Chirp 3 HD voices provide low-latency streaming, expressive intonation and human disfluencies for conversational agents.cloud.google.com · read 15 Oct 2026
- Commercial use
- Yescloud.google.com · read 20 Sep 2026
- Company founded
- Google's official history dates the company's beginnings to 1998.about.google · read 15 Oct 2026
- Company headquarters
- Google's official history identifies the Googleplex in Mountain View, California as its headquarters.about.google · read 15 Oct 2026
- Company legal name
- Google's terms identify the provider as Google LLC.about.google · read 15 Oct 2026
- Company size
- LinkedIn lists Google as a public software-development company with 10,001-plus employees and headquarters in Mountain View, California.linkedin.com · read 15 Oct 2026
- Compliance
- Google Cloud describes ISO 27001/27017/27018/27701, SOC 1/2/3, PCI DSS and FedRAMP offerings plus GDPR and HIPAA alignment.cloud.google.com · read 15 Oct 2026
- Custom voices
- Chirp 3 instant custom voice can create personalized voice models with as little as 10 seconds of audio input and is available in more than 30 locales.cloud.google.com · read 4 Oct 2026
- Developer APIs
- Google documents REST v1 and v1beta1 APIs, gRPC APIs, authentication guidance and client libraries.docs.cloud.google.com · read 15 Oct 2026
- Documentation depth
- Documentation includes product basics, quickstarts, SSML tutorials, voice catalogs, API references, authentication, samples and release notes.docs.cloud.google.com · read 15 Oct 2026
- Export formats
- MP3,LINEAR16,OGG_OPUS,MULAW,ALAWcloud.google.com · read 20 Sep 2026
- Gemini-TTS
- Gemini-TTS supports single- and multispeaker synthesis with natural-language control of style, accent, pace, tone and emotion.cloud.google.com · read 15 Oct 2026
- GetApp feature ratings
- GetApp reports AI voices 4.8/5, custom voices 5.0/5, multilingual support 5.0/5, API 5.0/5 and SSML 5.0/5 from small review subsets.getapp.com · read 15 Oct 2026
