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TTS-1 - In-Depth Overview

OpenAI · TTS

Current
Flagship
Latest in family

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, available API code samples, and performance strengths.

Key Metrics

Input Limit

No data tokens

Output Limit

No data tokens

Input Cost

$15.00/1M

Output Cost

N/A/1M

Sample API Code

from openai import OpenAI
client = OpenAI()

speech_file_path = "speech.mp3"
response = client.audio.speech.create(
  model="tts-1",
  voice="alloy",
  input="The quick brown fox jumped over the lazy dogs."
)

response.stream_to_file(speech_file_path)

Required Libraries

openai
openai

Notes

Text-to-speech model optimized for speed.

Capabilities

text to speech

Supported Data Types

Input Types

text

Output Types

audio

Strengths & Weaknesses

Exceptional at

speed

Additional Information

Latest Update

May 18, 2025

Knowledge Cutoff

No data