Does Gemini 2.5 Flash text-to-speech support streaming output?

Yes. Gemini 2.5 Flash text-to-speech supports streaming output for real-time audio generation.

Can Gemini 2.5 Flash text-to-speech clone a voice, and how much sample audio does it need?

Gemini 2.5 Flash text-to-speech supports voice customization. Check the API documentation for available voice options.

What is the maximum audio length per request on Gemini 2.5 Flash text-to-speech?

Gemini 2.5 Flash text-to-speech accepts up to 8,192 tokens of input text. Check the API documentation for maximum audio duration.

How do you start calling Gemini 2.5 Flash text-to-speech?

Set the model parameter to “gemini-2.5-flash-preview-tts” and use your MixRoute API key. Compatible with OpenAI SDK.

What is the rate limit for Gemini 2.5 Flash text-to-speech?

Rate limits for Gemini 2.5 Flash text-to-speech depend on your MixRoute plan tier. Check your console quota.

What should you evaluate before moving production traffic to Gemini 2.5 Flash text-to-speech?

Before switching production traffic to Gemini 2.5 Flash text-to-speech, run a pilot on a representative slice of your traffic and check output quality, latency at peak concurrency, and cost per request. Verify the error and retry behaviour, and confirm the request limits you depend on match your plan.

When was Gemini 2.5 Flash text-to-speech released, and is it still maintained?

Gemini 2.5 Flash text-to-speech is listed with catalog status stable. The recorded release date is 2025-05-20. Check the model page for deprecation notices before you build a long-lived integration on it.

Model detail

Gemini 2.5 Flash text-to-speech

Provided by Google

Pay-as-you-go

Google's efficient speech-synthesis model emphasizes low latency, controllable voice style, and scalable narration or conversational audio.

Model specs

Model ID: gemini-2.5-flash-preview-tts

Context length: 8.192K
Max output: 8.192K
I/O modalities
Released: 2025-05

API endpoints

One MixRoute gateway, OpenAI-compatible

Gemini /v1beta/models/{model}:generateContent POST
OpenAI-compatible /v1/chat/completions POST

Pricing

Flat rate, unit: /1M Tokens

Input

$0.5000 /1M Tokens

Completion

$10.0000 /1M Tokens

Selection summary

Quickly judge whether it fits your workload

What is this model good for?

Text-To-Speech synthesis for real-time assistants

Gemini 2.5 Flash TTS — Fastest engine for high-fidelity speech synthesis, low-latency and cost-efficient audio generation.

What should you check before using it?

8,192 context, 8,192 output

Text-To-Speech. Knowledge cutoff: 2025-01. Released 2025-12.

Why use it through MixRoute?

Available through MixRoute's OpenAI-compatible endpoint

Use the Google Gen AI SDK or call through MixRoute. Set the model parameter to "gemini-2.5-flash-preview-tts".

Token cost estimator

Live estimate from this page's pricing, not an actual bill

Input tokens Max per request 8.192K

Output tokens Max per request 8.192K

Requests / month

Cache hit rate –

This model has no cache-read price; caching is not counted

FAQ

Gemini 2.5 Flash text-to-speech: Google’s efficient speech-synthesis model emphasizes low latency, controllable voice style, and scalable narration or conversational audio.

Get started

01

Create an API key

Generate a key in the Console; one key calls every model.
02

Set the base URL

Fully OpenAI SDK-compatible; just swap the URL to connect.

https://api.mixroute.ai/v1
03

Specify the model ID

In the request's model field, enter:

gemini-2.5-flash-preview-tts

Create an API key

New users get $5 in free credits

Test this model and alternate routes with the same request format

Start from a real workload, then let quality, total cost, and failure conditions decide whether to send production traffic.

Create an API key View integration docs