If this was the case then Anthropic would be in a very bad spot.
It's not, which is why people got so mad about being forced to use it rather than better third party harnesses.
Pi is better than CC as a harness in almost every respect.
- It still lacks support for industry standards such as AGENTS.md
- Extremely limited customization
- Lots of bugs including often making it impossible to view pre-compaction messages inside Claude Code.
- Obvious one: can't easily switch between Claude and non-Claude models
- Resource usage
More than anything, I haven't found a single thing that Pi does worse. All of it is just straight up better or the same.