What bothers me with codex cli is that it feels like it should be more observable, more open and verbose about what the model is doing per step, being an open source product and OpenAI seemingly being actually open for once, but then it does a tool call - "Read $file" and I have no idea whether it read the entire file, or a specific chunk of it. Claude cli shows you everything model is doing unless it's in a subagent (which is why I never use subagents).