Alternatively, what you’re seeing is continuous hill climbing and optimisations based on large scale experiments and simulated rollouts.

For me personally, I don’t use Claude Code because I can’t read the source.

At least with Codex, I know there’s a bunch of telemetry and all that, but I can have my agent inspect the source and have relatively greater confidence it’s not implanting spyware onto my machine, because a classifier thinks I’m working for Deepseek or something.