That said, OpenAI isn't public, so you can't directly short it easily. I guess you could short Microsoft but I don't know if that gives you enough exposure to truly be worth it, even if you do genuinely believe what OOP claims.
Not guaranteed, but the norm.
I've never tried to buy PUTs on a big IPO but I wouldn't be surprised that there's a premium on them, if options trading is even available.
That tends to settle down ~60 days after trading, with seasonsed order flow, a realized volatility pattern, Observed volumes, open interest, liquidity in the stock (eg hedging becomes cheaper) and naturally - competition between market makers.
Wide spreads are profitable for options dealers (and you need that profit to absorb losses where risk is misjudged or the stock is unpredictable) - but if two dealers are making excess profits offering wide markets in an option, a 3rd will join and undercut them.
Source - I was a quant at a large investment bank, with ~5 years facing the Equity markets / 13 years across many desks and teams.
Here's a chart of the last 20 IPOs with their Relative Spread (Bid + Offer / Midpoint) on each successive day of trading to show the tightening of spreads over time. https://drive.google.com/file/d/1-bLekd5OonnrlEZyjRPNQYZmvnG...