Are you using gemini CLI or antigravity? The former is not really comparable to the latter in terms of quality. I wouldn't say antigravity is as good as the competition but it's pretty close. Miles behind is overstating it.
Gemini CLI but also used the Gemini models via opencode. They're terrible at CLI tool use. Like I said, just editing text files, they fall over rapidly, constantly making mistakes and then mistakes fixing their mistakes.
Antigravity wants me to switch IDEs, and I'm not going to do that.
This lines up with my experience. Antigravity doesn't have this shortcoming though. I think the agent harness matters equally to the model. Gemini CLI and opencode aren't very great harnesses in my opinion.
I too dislike having my choice of ide forced on me. Hopefully that situation improves, but antigravity demonstrates that Gemini isn't necessarily behind by that much.
Antigravity wants me to switch IDEs, and I'm not going to do that.