Manus was great, used it for months for exploring ideas, making reports and such. I dropped it when I heard that Meta was buying it.

Then I used Gemini and it was great as well, but very limited when it comes to coding (in Antigravity) because instead of giving me credits for coding in the subscription they give you GB on Google Drive. So you burn through the coding very quickly.

Github Copilot is the worst. It usually gets lost while editing some file. And it is incredibly slow.

Then I swithced to Codex and ChatGPT. Great combo for everything. Good at coding, good at exploring, generous with limits (much more so the first month).

I haven't used Claude Code directly, but Claude Opus 4.x was probably the best model for coding used via Copilot and Antigravity.