OpenAI logo

TTS-1


TTS-1 is OpenAI logoOpenAI's text to speech model, available from 2 providers, starting at $N/A / 1M input and $N/A / 1M output. A text-to-speech model optimized for realtime speech synthesis, converting text into natural-sounding audio via the OpenAI Audio API.
Spec
Canonical IDopenai-tts-1
TypeText to Speech
StatusActive
CreatorOpenAIOpenAI
Providers
Input ModalitiesText
Output ModalitiesAudio
Elo Rating
1102
#106

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text·
Image·
Audio
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

ProviderStandard
Audio In
$ / 1M
Audio Out
$ / 1M
Azure AI Foundry logo
Azure AI Foundry
tts-1
$0.015N/A
OpenAI logo
OpenAI
tts-1
$0.015$15.00

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Step TTS 2Available
StyleTTS 2Available
Inworld TTS 1.5 MaxAvailable
Inworld TTS 1.5 MiniAvailable
TTS-1$0.000$0.000Current
Inworld TTS 1 MaxAvailable
TTS-1 HD$0.000$0.000Available
Inworld TTS 1Available
LMNTAvailable
Microsoft TTSAvailable
Microsoft TTS HDAvailable

Model IDs