As of July, the explore agent inherits the parent model, capped at opus.

So fable and opus use opus to explore. Sonnet uses sonnet.

I replaced my built in explore agent with one hardcoded to sonnet low effort.

https://github.com/anthropics/claude-code/issues/72940

It did used to use Haiku but that model is now too too far behind…

Im now fascinated by how exactly Bcherny generated that message using claude. Like is the entire issue resolution automated, or still guided in someway?

GH copilot as well, explore subagent is configurable.