LessWrong posts by zvi

“o3 Turns Pro” by Zvi


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You can now have o3 throw vastly more compute at a given problem. That's o3-pro.

Should you have o3 throw vastly more compute at a given problem, if you are paying the $200/month subscription price for ChatGPT Pro? Should you pay the $200, or the order of magnitude markup over o3 to use o3-pro in the API?

That's trickier. Sometimes yes. Sometimes no. My experience so far is that waiting a long time is annoying, sufficiently annoying that you often won’t want to wait. Whenever I ask o3-pro something, I often also have been asking o3 and Opus.

Using the API at scale seems prohibitively expensive for what you get, and you can (and should) instead run parallel queries using the chat interface.

The o3-pro answers have so far definitely been better than o3, but the wait is usually enough to break my workflow and [...]

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Outline:

(03:07) o3-Pro Versus o3

(06:07) Give Me a Minute

(07:33) On Your Marks

(10:04) Reactions

(23:30) Brevity Is The Soul Of Wit

(24:08) Where Art Thou O System Card

(27:05) The Price Drop on o3

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First published:

June 17th, 2025

Source:

https://www.lesswrong.com/posts/inWQLm6FvFQB68vY7/o3-turns-pro

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Narrated by TYPE III AUDIO.

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LessWrong posts by zviBy zvi