What are some recent powerful startups?

The only ones I've seen are AI grifters (not even useful AI) and Polymarket/Kalshi, which makes me cynical; although I've seen some decent startups that are small (i.e. non-powerful) but nonetheless profitable.

>Legora: Operates as an agentic operating system built for modern legal work

seems to be doing well (https://x.com/paulg/status/2095997934584160647)?

Isn't Anthropic and OpenAI still startups? Even though they have big revenue, their business model isn't proved yet and there is a big chance they gonna fail and so most of the AI startups.

OpenAI launched 10 years ago

Anthropic launched only 5, but was built from connections to OpenAI

Launch date is not what defines a startup.