Using Claude code and Codex CLI and then Aider with Gemini 2.5 pro, Aider is much faster because you feed in the files instead of using tools to start doing all kinds of whole know what spending 10x the tokens. I tried a relatively simple refactor which needed around 7 files changed, only Aider with 2.5 got it and in the first shot. Where as both Codex and Claude code completely fumbled it