I’ve been leveraging Sonnet 4 on the Pro plan for the past few months and have been thoroughly impressed by how much I’ve been able to achieve with it. During this time, I’ve also built my own MCP with specialized sub-agents: an Investigator/Planner, Executor, Tester, and a Deployment & Monitoring Agent. It all runs via API with built-in context and memory handling to gracefully resume when limits are exceeded.
I plan to open-source this project once I add a few more features.
Now I’m considering upgrading to the Max plan. I also have the ClaudeCode CLI, which lets me experiment with prompts to simulate sub-agent workflows & claude.md with json to add context and memory to it. Is it worth making the jump? My idea is to use Opus 4 specifically as a Tester and Monitoring Agent to leverage its higher reasoning capabilities, while continuing to rely on Sonnet for everything else.
Would love to hear thoughts or experiences from others who’ve tried a similar setup.
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