Gemini 3.8 Flash TTS

Speech

gemini-3.8-flash-tts

Google|Created Oct 30, 2026

Speech

Gemini 3.8 Flash TTS is Google's flagship creative text-to-speech model, engineered for studio-grade voice fidelity, expressive acting, authentic regional accents, and rock-solid long-form multi-turn stability.

Overview Specifications Activity Performance Uptime Examples API Reference

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Pricing-50%

Pay-as-you-go rates for this model. More details in the billing guide.

Speech (1k)

$0.0068

Capabilities

Input Modalities

Text

Output Modalities

Audio

Supported Parameters

Available parameters for API requests

Response Format

Usage Analytics

Token usage of this model on our platform

Not enough activity data to display a chart

Throughput

Not enough throughput data

Time-To-First-Token (TTFT)

Not enough TTFT data

Code Example

Example code for using this model through our API with Python (OpenAI SDK) or cURL. Replace placeholders with your API key and model ID.

Basic request example. Ensure API key permissions. For more details, see our documentation.

from openai import OpenAI
from pathlib import Path

client = OpenAI(base_url="https://api.naga.ac/v1", api_key="YOUR_API_KEY")

speech_file_path = Path("speech.mp3")
resp = client.audio.speech.create(
    model="gemini-3.8-flash-tts",
    voice="alloy",
    input="Hello from NagaAI Text-to-Speech!"
)
resp.stream_to_file(speech_file_path)