Claude Code has a hardcoded instruction telling Opus 5 not to use subagents
Claude CodeOpus 5subagentsbug reportAnthropicAImachine learning.
Author: bredren
Date: 7/26/2026
Article Summary:
A user reports a hardcoded instruction in Claude Code 2.1.219+ that tells Opus 5 not to use subagents, leading to poor quality output.