It's horrendous. It constantly scope creeps, will attempt to use admin overrides, assume you are incompetent, speak in half thoughts, and just blatantly ignore instructions. Opus 4.6 was peak for Anthropic. Its a lot better outside of Claude Code but it's still annoying. I vibed out a CLI tool to do packet capture for TUI applications to get an idea of why Claude Code makes it worse. The amount of additional unnecessary context and tool bloat that goes with your sessions is crazy. The memory system ships so much extra info about what you did yesterday that I think it's misguiding the model.

Link to the app for those interested: https://github.com/citizen-123/cli-capture