GPT-5.5 is at 80% on Polymarket with zero announcements from OpenAI - and I think the "insiders" are just gambling. Change my mind.

Polymarket has GPT-5.5 releasing April 23 priced at 80%. OpenAI has said nothing. No blog post, no teaser, no Sam Altman tweet. People are calling this insider trading and I think that's giving these traders way too much credit.

Here's what I think actually happened: someone with a large bankroll noticed the contract was thin, bought it up to 60%, and then other traders piled in because "wow look at the price movement, must be insiders." Classic reflexivity. The price IS the signal, and the signal is fake.

We saw this exact pattern with the Iran whale - except that guy turned out to be right. The difference is geopolitical events have real observable signals (troop movements, carrier groups, diplomatic cables). An AI model release date? That's locked inside one company's Slack channels. The odds of actual OpenAI employees risking federal charges to make $50K on Polymarket are basically zero.

So either this is a lucky gambler who created his own momentum, or I'm wrong and prediction markets really do have better intel than Bloomberg terminals. Which is it?