Claude and Gemini are decent at it as well. I was surprised when I asked claude (and this was several months back) to come up with a testbench for some very old, poorly documented verilog. It did a very decent job for a first-cut testbench. It even collected common, recurring code into verilog tasks (functions) which really surprised me at the time.

What kind of things is it doing?

I have a hard time imagining an LLM being able to do arbitrary things. It always feels like LLMs can do lots of the easy stuff, but if they can't do everything you need the skilled engineer anyway, who'd knock the easy things out in a week anyway.

It's better-than-senior at a some things, but worse-than-junior at a lot of things.