Google

Gemini TTS gemini 2.5 pro tts

Audio & Music

High-fidelity multi-speaker speech with expressive control for long-form dialogue

Input $1.40 / 1M tokens | Output $28.00 / 1M tokens Gemini TTS gemini 2.5 pro tts API reference →
Model health Insufficient data
curl -X POST https://runapi.ai/api/v1/gemini_tts/text_to_speech \
  -H "Authorization: Bearer $RUNAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "gemini-2.5-pro-tts",
  "text": "Generate a two-speaker podcast introduction with a calm British host and an energetic American guest."
}'
https://runapi.ai 1 endpoint

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Specifications

Technical details

Provider Google
Model ID gemini-2.5-pro-tts
Modality Audio & Music
Task types Asynchronous
API endpoint /api/v1/gemini_tts/text_to_speech
Billing unit 1K tokens
Input parameters callback_url, dialogue_turns, model, sample_context, scene, speakers, temperature
Catalog status Operational
HOW IT WORKS

Use This Model in 3 Steps

  1. Get Your Key

    Sign up for free and create an API key for gemini-2.5-pro-tts from the dashboard.

  2. Send a Request

    POST to /api/v1/gemini_tts/text_to_speech with the gemini-2.5-pro-tts model slug and your parameters.

  3. Get Results

    Poll the task or follow the callback to retrieve the completed gemini-2.5-pro-tts result.

What this model offers

Flexible parameters

Configure 5 documented parameters, including dialogue_turns, sample_context, scene, speakers, temperature.

Endpoint coverage

Exposes 1 public endpoint(s): text_to_speech.

Webhook delivery

Asynchronous tasks accept a callback URL for completion notifications.

Usage-based billing

Metered by 1K tokens with no subscription requirement.

Gemini TTS gemini 2.5 pro tts Pricing

Endpoint
Price
text_to_speech
Input: $1.40 / 1M tokens Output: $28.00 / 1M tokens
API REFERENCE

Endpoint Specification

Endpoint
POST /api/v1/gemini_tts/text_to_speech
Model ID
gemini-2.5-pro-tts
Task Types
text_to_speech

Request parameters

scene

Optional string

Scene and recording environment.

speakers

Required array

Non-empty speaker configurations with unique Speaker N identifiers.

temperature

Optional number

Sampling temperature.

callback_url

Optional string

Webhook URL for async notifications.

dialogue_turns

Required array

Non-empty ordered dialogue turns whose speaker ids reference configured speakers.

sample_context

Optional string

Overall delivery context and tone.

USE CASES

Podcast & video scoring

Generate royalty-free background music matched to episode mood without licensing fees.

Game audio

Generate adaptive ambient soundscapes and effects for procedurally generated levels.

Ad voiceover & SFX

Generate custom voiceovers and sound effects for client spots without a recording studio.

FAQ

Frequently asked questions about Gemini TTS gemini 2.5 pro tts

How do I select gemini-2.5-pro-tts?

Pass the model ID shown in the quickstart.

What's the rate limit on this variant?

Per-key rate limits scale with your usage tier. The pricing page shows current limits. If you need higher throughput, contact support to discuss tier upgrades.

Can I switch variants later?

Yes. Variant is a parameter in the request. Switch by changing the model ID — no code changes, no re-authentication, no separate billing setup. All variants share the same API key and request shape.

Does it stream?

Where streaming is available, RunAPI streams end-to-end. LLM models support token-level streaming. Media models use async task polling or webhook callbacks for result delivery.

Where do I report quality issues?

Open an issue on the public GitHub repo or email support at [email protected]. Include the task ID and model ID so the team can investigate the specific generation.

Do I need a separate provider account?

No. Your RunAPI API key is enough to access this variant and every other model in the catalog. You do not need accounts with the underlying provider.

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