Pretty heavily, yes. The Anthropic primitives are the best starting point we think, and focusing allowed us to fine-tune the workflow and harness for this use-case. But support for other models/providers is on the roadmap.
What would you like to see? Other other subs like Codex? Self-hosted?
i feel like Codex may be cheaper for longer running stuff... OpenRouter would be make sense?
Ok, thanks for the feedback! We'll put that on the list, really keen to expand compatibility.