OpenAI fired an employee who placed bets on Polymarket

OpenAI did not disclose the employee’s name, TechCrunch reports. However, a company spokesperson said the actions violated its policies, which prohibit employees from using inside information for personal gain, including in prediction markets.

Prediction markets like Polymarket and Kalshi allow people to bet on the outcomes of real-world events. For example, Polymarket bets on what products OpenAI will announce in 2026 and when the company will go public. They can cover any number of events, and there are significant amounts of money to be made on them.

Also in November 2025, there were about 100 active bets on the Russian-Ukrainian war on the Polymarket prediction market, such as whether the Russians would capture Pokrovsk by the end of the year or when a ceasefire would come. In addition, the developers of the PolyGlobe map, which visualizes bets from Polymarket with geolocation, unauthorizedly used the API of the Ukrainian OSINT project DeepState.

Prediction markets insist that they are not gambling sites and prefer to call themselves financial platforms.

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