WhatIf: 10,000+ steerable LLM agents form a flight simulator for policy

scyrusk · x · 2026-11-03

Researchers introduce WhatIf, a "flight simulator for policy" built from 10,000+ LLM agents that you can steer, rewind, and interview in real time — letting you test a consequential decision before it touches a single real person.

The project is being presented at UIST 2026, with a detailed thread from the authors.

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