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Here my main problem with sub-agents WITHIN Claude Code. They don’t allow you to use other models. Let’s be honest it’s 99% Sonnet.

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Great point, I've found Sonnet really can't be beat on many tasks, but increasingly finding Gemini-Pro and o3 handle the tough bugs and refactors best.

That's why I've been using agro to launch agents from each of the main LLM vendors and checking their results when I'm stuck: https://github.com/sutt/agro/blob/master/docs/index.md

Opus is the opposite. Incredibly smart and better than everything else

I haven't used them yet but it says they can use MCPs. The only MCP server I use is zen-mcp-server for routing stuff to o3 and gemini.

But that’s added layer and slow, no? Wouldn’t something like Opencode be a better option? You can pick anything out of major providers.

I haven't tried opencode, but I am very happy with claude code overall, and most of what I do is with opus. When I'm using zen to route to o3/gemini it's usually for a more difficult task that I don't mind taking longer anyway - I'm usually telling it to get solutions from both o3 and gemini pro and then to use o3 to evaluate which is better. I don't think the added layer of claude choosing to use the tools is really adding much here, claude picking tools is a lot faster than o3 writing code.

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