OpenAI: tts-1-hd
tts-1-hd is OpenAI's older hosted HD TTS SKU, not the live speech default. The same speech block now leads with GPT-4o mini TTS and GPT-4o TTS.
Compare tts-1 if you wanted the still-listed cheaper leftover, and whisper-1 if you wandered here for hosted speech-to-text instead.
Key Features
- Hosted API id:
tts-1-hdis the billed higher-priced OpenAI TTS twin, not a local open-weight model. - Not the 2026 speech lead: GPT-4o TTS rows lead the same block.
- No invented quality claim: Do not paste leftover "more natural / HD as current default" unless you re-time a first-party page.
Use Cases
- People with a tts-1-hd bookmark who need the catalog corrected.
- People who were about to call tts-1-hd the latest OpenAI voice.
Limitation: We did not synthesize a sample or time first-audio latency.
Pricing
openai.com/api/pricing on 2026-08-17.
| Piece | Price | Notes from that page |
|---|---|---|
| tts-1-hd | $30 / 1M characters | Still listed. Previous snapshot. |
| tts-1 | $15 / 1M characters | Still-listed cheaper leftover. |
| Live speech lead | Confirm GPT-4o TTS rows | GPT-4o mini TTS / GPT-4o TTS lead the speech block. |
If a leftover blog still calls tts-1-hd the latest TTS, treat the pricing-page order as the source.
Getting Started
- Open openai.com/api/pricing before you hard-code
tts-1-hd. - Confirm GPT-4o TTS rows if you wanted the live hosted path.
- Confirm tts-1 if you wanted the still-listed cheaper leftover.
- Do not paste an unverified quality crown into a deck.
Frequently Asked Questions
Is tts-1-hd still the OpenAI TTS default?
GPT-4o TTS rows lead speech.
Same as tts-1?
No. tts-1 is the cheaper leftover at $15 / 1M characters.
Is $30 / 1M still listed?
Yes, on 2026-08-17.
Alternatives
- tts-1: Still-listed cheaper TTS leftover.
- whisper-1: Hosted STT SKU, still $0.006/min.
- GPT-5.6 Sol: Live OpenAI frontier chat if you wandered here for a current model.
Tips
- Call
tts-1-hda hosted leftover SKU, not the current default voice. - Confirm GPT-4o TTS before you build a 2026 voice stack on tts-1-hd.
- Keep $30 / 1M only as the listed character price.
Conclusion
tts-1-hd is still listed at $30 / 1M characters, but it is not the 2026 OpenAI TTS default. Start at openai.com/api/pricing, then decide whether a GPT-4o TTS row or tts-1 already covers the path you need.
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