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 written text into natural-sounding spoken audio.
Spec
Canonical IDopenai-tts-1
TypeText to Speech
StatusActive
CreatorOpenAIOpenAI
Providers
Input ModalitiesText
Output ModalitiesAudio
Elo Rating
1099
#120

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
azure/tts-1
$0.015N/A
OpenAI logo
OpenAI
tts-1-1106
$0.015$15.00

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Step TTS 2Available
StyleTTS 2Available
TTS HD 2.5Available
TTS 1$0.000$0.000Current
Inworld TTS 1 MaxAvailable
Inworld TTS 1.5 MaxAvailable
Inworld TTS 1.5 MiniAvailable
TTS 1 HD$0.000$0.000Available
Azure NeuralAvailable
Inworld TTS 1Available
LMNTAvailable

Model IDs