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TTS-1 - In-Depth Overview

OpenAI · OpenAI TTS

Current

Model ID: tts-1

Get all the details on TTS-1, an AI model from OpenAI. This page covers its token limits, pricing structure, key capabilities such as text_to_speech, realtime_audio_generation, available API code samples, and performance strengths.

Key Metrics

Input Limit

No data tokens

Output Limit

No data tokens

Input Cost

N/A/1M

Output Cost

N/A/1M

Sample API Code

from openai import OpenAI
client = OpenAI()
response = client.audio.speech.create(
    model="tts-1",
    voice="alloy",
    input="The quick brown fox jumped over the lazy dog."
)
response.stream_to_file("speech.mp3")

Required Libraries

openai
openai

Notes

Text-to-speech model optimized for speed for realtime use cases.

Supported Data Types

Input Types

text

Output Types

audio

Strengths & Weaknesses

Exceptional at

realtime text to speech

Good at

natural sounding speech generation

Additional Information

Latest Update

May 22, 2025

Knowledge Cutoff

No data