TTS-1 HD
TTS-1 HD is worth evaluating for general LLM work when its provider route and context window match the workload.
Use it for
- Teams evaluating general LLM work
- Buyers comparing 1 tracked provider route
Do not use it for
- Vision or document-understanding workloads
- Strict JSON or tool-calling flows
- Family
- OpenAI Text-to-Speech
- Released
- 2023-11-06
- Architecture
- neural
- Specialization
- audio
- Openness
- Proprietary
- License
- ProprietaryCommercial use with conditions
- Training
- pretrained
Cheapest of 1 route · OpenAI API
About
TTS-1 HD is OpenAI's high-quality text-to-speech model, optimized for audio quality over speed, released at DevDay November 2023. Uses the same 6 preset voices as TTS-1 but produces noticeably better audio fidelity at twice the per-character cost. Accepts text up to 4,096 characters. Priced at $30.00/1M characters. API ID: tts-1-hd.
TTS-1 HD is a proprietary model in the OpenAI Text-to-Speech family. The structured metadata tracks audio. This page tracks provider routes through OpenAI API. No headline benchmark score is tracked for TTS-1 HD yet.
Top use-case fit
No primary decision-task fit is mapped for this model yet.
Provider price ladder
Compare API pricing across 1 providers for input and output tokens, batch, and cached reads when available.
| Provider | Input / 1M | Output / 1M | Route |
|---|---|---|---|
| OpenAI API | $30.00 | - | ServerlessPartial |
Capabilities
Benchmark peer barsfor Coding
No task-mapped benchmark peers are available for this model yet.
Migration checks
No linked migration route is available for this model yet.
API versions
tts-1-hdtts-1-hd-1106Rankings & picks(2)
Cheapest of 1 route · OpenAI API