Pretty sure claude code already delegates reading a large codebase to haiku subagents.
replyAs of July, the explore agent inherits the parent model, capped at opus.
replySo fable and opus use opus to explore. Sonnet uses sonnet.
I replaced my built in explore agent with one hardcoded to sonnet low effort.
> "LLM Bloom filter"
replyvery good way to put it.