OpenAI: o1-preview
o1-preview is a previous o1 research-preview snapshot, not a cheaper o1 and not the 2026 reasoning default. Leftover English/Japanese bodies on this site had mixed it up with o1-mini ("faster and cheaper"). Drop that. The models index now starts at GPT-5.6 Sol.
Compare o1-mini if you wanted the leftover cheap twin at $1.10 / $4.40, GPT-5.6 Sol if you wanted the live start-here model, and GPT-4o if you wanted the leftover omni snapshot.
Key Features
- Research preview, expensive row: The card on the public page says research preview of the o1 series at $15 / $60.
- Not o1-mini: Leftover site copy stole mini's "faster and cheaper" line. That is wrong.
- Dated twin is deprecated:
o1-preview-2024-09-12. - Not the 2026 start: Live models index starts at GPT-5.6 Sol.
Use Cases
- People with an o1-preview bookmark who need the catalog corrected.
- People who saw leftover text that called preview cheaper than o1.
Limitation: We did not re-run leftover world-knowledge crowns.
Pricing
o1-preview card on 2026-08-18.
| Piece | Price | Notes |
|---|---|---|
| o1-preview | $15 / $60 per 1M | Cached input $7.50. Still listed. |
| o1-preview-2024-09-12 | Deprecated | Same card. |
| o1-mini leftover | $1.10 / $4.40 | openai-o1-mini. |
| Live start | GPT-5.6 Sol $5 / $30 | gpt-5.6. |
If a leftover blog still calls o1-preview a cheaper o1, treat this table as the source.
Getting Started
- Open the o1-preview card and note $15 / $60.
- Confirm o1-mini if you wanted the leftover cheap twin.
- Confirm GPT-5.6 Sol if you wanted the live start-here model.
- Do not paste "faster cheaper o1" onto this slug.
Frequently Asked Questions
Is o1-preview cheaper than o1?
The leftover body on this site said that. The live card prints $15 / $60. Do not keep the mix-up.
Is it gone?
The card is still listed. The dated snapshot is deprecated.
Same as GPT-5.6 Sol?
No. Sol is the live start-here frontier.
Alternatives
- GPT-5.6 Sol: Live OpenAI frontier.
- o1-mini: Leftover cheap o1 snapshot.
- GPT-4o: Leftover omni snapshot.
Tips
- Quote $15 / $60 from the live card.
- Do not reuse leftover mini adjectives on this page.
- Confirm GPT-5.6 if you wanted a current reasoning default.
Conclusion
o1-preview is a still-listed previous research-preview snapshot at $15 / $60, not a cheaper o1 and not the 2026 default. Start at the o1-preview card, then decide whether GPT-5.6 Sol already covers the path you need.
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