I've been trying blackbox.ai in VSCode the last little while. In my very limited experience it either gets it close to right on the first few tries or gets stuck in a kind of testing loop, making more an ornate tests that still miss one critical bug.
It's the first sort of "magic wand" coding AI I've used, where in the past I just would ask questions of ChatGPT or Gemini.
I use Cursor and GitHub Copilot as “fancy auto complete”. On rare occasions I use their chat agent but I run into context limits and I generally don’t like LLMs going in and modifying code I’ve already written.
I also use Claude to ask general code questions, to explain something, give me ideas or code examples.
I am comfortably behind the state of the art.
Cline with Gemini flash, Gemini pro when flash isn’t enough to push something through
I keep CoPilot-based autocomplete turned on everywhere and occasionally use the inline chat with Claude Sonnet 4 but honestly for a lot of stuff I'm still stuck on copy/pasting from ChatGPT o4-mini-high. I've found I can get the best responses when I fully control the context and inputs independent from my workspace.