LessWrong (30+ Karma)

“o3 Is a Lying Liar” by Zvi


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I love o3. I’m using it for most of my queries now.

But that damn model is a lying liar. Who lies.

This post covers that fact, and some related questions.

o3 Is a Lying Liar

The biggest thing to love about o3 is it just does things. You don’t need complex or multi-step prompting, ask and it will attempt to do things.

Ethan Mollick: o3 is far more agentic than people realize. Worth playing with a lot more than a typical new model. You can get remarkably complex work out of a single prompt.

It just does things. (Of course, that makes checking its work even harder, especially for non-experts.)

Teleprompt AI: Completely agree. o3 feels less like prompting and more like delegating. The upside is wild- but yeah, when it just does things, tracing the logic (or spotting hallucinations) becomes [...]

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Outline:

(00:33) o3 Is a Lying Liar

(04:53) All This Implausible Lying Has Implications

(06:50) Misalignment By Default

(10:27) Is It Fixable?

(15:06) Just Don't Lie To Me

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First published:

April 23rd, 2025

Source:

https://www.lesswrong.com/posts/KgPkoopnmmaaGt3ka/o3-is-a-lying-liar

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Narrated by TYPE III AUDIO.

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