Compare

TTS-1 HD — and what?

Pricing per million tokens, context window, capabilities — pulled from each provider's public docs. All 1 are available via the same AIgateway OpenAI-compatible endpoint; flip the model string to switch.

Search1/4
TTS-1 HD
openai/tts-1-hd
Provider
OpenAI
Family
Modality
audio-tts
Context window
Max output
Released
2026-05-22
License
Open-weight
Per 1K chars
$0.030 /1K ch
Tools
Streaming
Vision
JSON mode
Reasoning
Prompt caching
Batch API
Try it
View model →
TTS-1 HD
openai/tts-1-hd
Full spec →

OpenAI's high-definition text-to-speech model producing higher quality audio output.

Strengths
  • Natural speech synthesis
Use cases
VoiceoversIVRAudiobooks

Compare with another

MiniMax Speech 2.8 HD vs TTS-1 HD
minimax/speech-2.8-hd · openai/tts-1-hd