TTS 1 HD is OpenAI's text to speech model, available from 3 providers, starting at $30.00 / 1M input. A high-quality text-to-speech model optimized for audio fidelity, producing natural-sounding speech for non-realtime use cases.
Specifications
Canonical IDopenai-tts-1-hd
TypeText to Speech
StatusDeprecating
CreatorOpenAIOpenAI
Providers
Input ModalitiesText
Output ModalitiesAudio
Release Date · 3 years ago
Deprecation Date
Benchmarks
Elo Rating
#127

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

US Dollar ($)
Per 1M tokens
ProviderStandard
Input
$ / 1M
Audio In
$ / 1K chars
Azure AI Foundry logo
Azure AI Foundry
azure/tts-1-hd
N/A$0.030
OpenAI logo
OpenAI
tts-1-hd
N/A$0.030
Vercel AI Gateway logo
Vercel AI Gateway
openai/tts-1-hd
$30.00N/A

Cost Calculator

US Dollar ($)
Preset:

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Inworld Realtime TTS 2————Available
Realtime TTS-2————Available
Realtime TTS-2 Research Preview————Available
Soniox TTS 2 RT————Available
Step TTS 2————Available
StyleTTS 2————Available
TTS HD 2.5————Available
VoxCPM2————Available
TTS 1 HD—$30.00—Current
TTS 1—$15.00—Deprecating
Inworld Realtime TTS 1.5 Max————Available

Model IDs

azure/tts-1-hd
openai-tts-1-hd
openai/tts-1-hd
tts-1-hd
tts-1-hd-1106