Model releaseModerate global significanceConfirmed confidence
OpenAI releases TTS-1 HD
OpenAI releases TTS-1 HD for higher-quality speech synthesis at its first DevDay.
What happened
Event details
TTS-1 HD is the higher-quality model in OpenAI's initial text-to-speech API release, paired with TTS-1, which prioritizes real-time speed.
Assessment
Why it matters
A model release or availability milestone with a documented capability or access condition.
58/100Global significance score. Regional effects are recorded only when the evidence supports a meaningful difference.
Availability
Access notes
Available through OpenAI's text-to-speech API.