https://junie.jetbrains.com/ probably.
No idea why they thought they can compete with frontier AI labs on that, it's entirely waste of money
They also tried to push AI feature set as a separate subscription which is just insane in current tooling market.
All users wanted is good integration of multi-AI providers in their base offering. I think they are slowly shifting to that but that's a lot of money wasted already
They integrated air recently into intellij, and I believe it's quite fruitful. You can use any agent you want, they can work locally, in separate worktrees, or remotely and you can switch between them, and merge their results back properly.