Seed Speech TTS 2.0

Speech

seed-speech-tts-2.0

ByteDance|Created Oct 30, 2026

Speech

TTS 2.0 presents Query-Response mechanism that brings the next generation of speech technologies. It can synchronously understand both Query and Response texts, greatly expanding the scope of contextual comprehension and significantly enhancing the anthropomorphism and emotional expression in conversations.

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)

$0.02

Capabilities

Input Modalities

Text

Output Modalities

Audio

Supported Parameters

Available parameters for API requests

InstructionsSpeedResponse 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="seed-speech-tts-2.0",
    voice="alloy",
    input="Hello from NagaAI Text-to-Speech!"
)
resp.stream_to_file(speech_file_path)