So far, IMHO, Claude Code remains significantly better than Gemini CLI. We'll see whether that changes with Gemini 3.
Not that Google didn't use to have problems shipping useful things. But it's gotten a lot worse.
EDIT: Don't disagree that Gemini CLI has a lot of rough edges, though.
That's because coding is currently the only reliable benchmark where reasoning capabilities transfer to predict capabilities for other professions like law. Coding is the only area where they are shy to release numbers. All these exam scores are fakeable by gaming those benchmarks.
Claude code seems to be more compatible with the model (or the reverse) whereas gemini-cli still feels a bit awkward (as of 2.5 Pro). I'm hoping its better with 3.0!