Gemini Text-to-Speech review
A low-cost API TTS option with broad language support and expressive controls.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Gemini Text-to-Speech is Google's API capability for converting text into single-speaker or multi-speaker audio. It is aimed at developers building assistants, podcasts, audiobooks, narration workflows, and other applications that need programmable speech generation. The service is available through the web and Gemini API, with output formats including WAV and PCM. Its broad language coverage, prebuilt voices, and natural-language controls make it suitable for teams that want expressive multilingual TTS without committing to a large fixed subscription.
Pricing is usage-based per 1 million input tokens, with a starting price of $0.25 per 1 million input tokens and a free plan. The published plans include Gemini 3.1 Flash TTS Preview Standard and Batch, Gemini 2.5 Flash Preview TTS Standard and Batch, and Gemini 2.5 Pro Preview TTS Standard and Batch. Standard plans can include a free tier, while Batch plans do not. Audio output is priced separately from text input, so buyers should account for both sides of usage when estimating costs. Gemini 3.1 Flash TTS Preview also supports streaming audio generation.
The standout feature is control over delivery: natural-language instructions can shape style, accent, tone, and pacing, while tags can express whispering, laughter, and excitement. Multi-speaker generation supports up to two speakers, giving the service a useful fit for dialogue and narrated formats. At the same time, Gemini TTS is currently in Preview, and it lacks verified voice cloning. Choose it for low-cost, expressive, multilingual API speech generation; choose another option if verified voice cloning is a requirement.
Gemini Text-to-Speech pros and cons
- Where it wins
- Supports 78 languages and 30 prebuilt voice options
- Adds style, accent, tone, pacing, and expressive audio controls
- Offers single- and two-speaker generation with streaming audio
- Where it doesn't
- The service is currently in Preview
- Audio output is priced separately from text input
- No verified voice cloning is listed
Gemini Text-to-Speech fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update