Yes
Opus 5.5 works extremely well, it can launch multiple subagents, assign them tasks, use our company’s inscrutable build system (that no one really understands anymore), and run tests, all by exposing harness commands in the system prompt
sashank_1509 on Hacker News
In the thread “Gemini 4 Argon”, replying to this comment
Helped: Exposing harness commands in the system prompt for subagents.
Well I work at BigCo and I have no idea how it compares to Claude Code because I’m not allowed to use Anthropic models outside of our custom company harness. Opus 5.5 works extremely well, it can launch multiple subagents, assign them tasks, use our company’s inscrutable build system (that no one really understands anymore), and run tests, all by exposing harness commands in the system prompt. I don’t think we are lacking in any way.