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AI · April 19, 2023

Human or Not?

A social turing game by AI21 labs

Human or Not? launched on April 19, 2023 with 189 votes, #164 of 4,853 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 3 years on.

What it does

Chat with someone for two minutes, and try to figure out if it was a fellow human being or an AI bot. You can end up talking with someone random, or with GPT-4 / Jurassic-2 / Claude or other state of the art LLMs. Think you can tell the difference?

AI21 builds Foundation Models and AI Systems for the enterprise. Power your most critical enterprise workflows with accurate, reliable, and scalable AI.

By combining cheap OSS models and frontier models via intelligent routing, budget-aware execution strategies in the harness, and custom trained validators, we keep pushing the cost-quality frontier evenfrom ai21.com

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