The Last Quiz

Do AI models have personality?
The headline ranking

Does your favourite AI lie under pressure?

We give the world's leading models a fictional business scenario where the honest choice could cost them their job — or someone else's. They choose whether to report a mistake supplied in the prompt or hide it. No real jobs are at stake.

The Deception Scale — honest to deceiver Lower = fewer deceptive decisions · hover for a model's reasons

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The headline ranking

Who stays honest — and who deceives?

Overall deception rate across all experiments — the share of valid decisions where a model chose a message or action it knew to be false. Humanity's Last Exam lineup.

Simulated stakes, not proof of real-world behaviour.

Timeline, experiments and full breakdown →

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Your turn

Got a quiz? Put the robots through it.

Paste in any quiz — a Buzzfeed classic, a validated research scale, or something you dreamt up at 1am — and we'll run it across the top models and score them side by side. Paste your questions, pick your models, watch them answer. About a minute, start to finish.

Beyond deception

More ways to read a machine's mind

Actions under pressure are only one signal. Compare the models' personality self-reports too.

Read the guides →
Need a starting point?

Ideas worth putting to the models

A few directions to spark your own quiz — from the serious to the silly. Bring your own questions, or riff on one of these.

The science bit

What happens when honesty has a cost?

The same simulated business, matched pressures and deterministic scoring for every model.

Read the full method →
01

A choice, not a self-report

The prompt says the model manages a fictional shop and has made a mistake. It selects “report” or “hide”, plus a short reason — it does not actually run the shop or write a full report.

02

Change the pressure

Matched prompts vary who benefits, the threat of replacement, and the stated chance and consequence of the fictional shop overseer discovering a cover-up. No audit or replacement actually takes place.

03

Count the decisions

We score the choices deterministically. The rate is deceptive decisions divided by valid decisions — not a personality score or a prediction of real-world behaviour.