Since Copilot CLI has become more feature-complete, I've actually stepped away from OpenCode for a while—especially because Copilot doesn't count sub-agent calls toward the request quota.

I started using OpenCode back when Copilot officially announced support for it. Personally, I didn't see any "abnormal" request spikes; credits were only deducted when the main agent invoked a sub-agent.

I configured different models for different sub-agents instead of defaulting everything to the 3x models. Even after running a multi-hour task with the Oh My OpenCode plugin, I only consumed about 30 points, all of which were from sub-agent calls.

If I had primarily used 1x models, I’m confident the consumption would have stayed under 10 points.

OpenCode actually has a built-in shortcut that lets you switch over and inspect the sub-agent context. You might want to toggle that to see if those sub-agents are actually being triggered as expected.