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The Twenty Minute VC (20VC) · Saturday, August 1, 2026

Semily Focuses on Human Subjectivity, Not Rationality, in AI Models

Joon Sung Park explained that Semily differentiates itself from other AI companies like OpenAI by focusing on simulating human subjectivity, values, and biases, rather than pure rationality. Semily aims for its models to make similar 'mistakes' and exhibit the same biases as humans. Their data collection prioritizes understanding cause, mechanism, and counterfactuals over simple prediction.

personJoon Sung ParkcompanySemilycompanyOpenAI

The tape

3 quotes
Similarly, doesn't really care about any of those. What we care about is if we have a person making a mistake in this context, we want our models to make the same kind of mistake. We want our models to be biased in the same way humans are.
Joon Sung Park
In a way, we want to be a representation of people's values, preferences, and taste. So their subjective half of their brain.
Joon Sung Park
The kind of data that we care deeply about is a lot of randomized control trials. We actually run a lot of A/B testing.
Joon Sung Park
Heard on The Twenty Minute VC (20VC) — “20VC: The Best AI Companies Have Unique Data Acquisition Strategies | Will Simile Kill Kalshi, Polymarkets and NASDAQ | How to Sign Fortune 500 Companies As Customers in Weeks with Joon Sung Park, Simile, published Saturday, August 1, 2026. Heardvine summarizes and quotes with attribution and timestamps, and links to the original everywhere.
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Semily Focuses on Human Subjectivity, Not Rationality, in AI Models — Heardvine