Do people really use AI + penetration testing to find advanced vulnerabilities like get shell or similar exploits?

In the past week, I bought 500 USD worth of AI API credits.

I tried many AI-powered penetration testing tools( in github projects ), and also used AI manually for penetration testing.

I mainly used Claude 4.6 and GPT 5.5, but I only found some simple vulnerabilities, not complex ones.

By “complex,” I mean things like getting a shell, remote code execution, etc.

If anyone has similar experience, please share your real experience. You can also leave contact information for paid private messages.