this is pure f*cking insane

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this is pure f*cking insane Anthropic just showed what 100 sub-agents running simultaneously inside Claude Code actually looks like an autonomous quad-model elimination tournament splits 100 sandboxes across Haiku 5.5, Sonnet 5.5, Opus 5.5, and upcoming Fable 5.5 in real time: run the tournament with /arena claude /arena --builders sonnet-5.5 --fuzzer haiku-5.5 --judge opus-5.5 --verify fable-5.5 The architecture splits labor into four segregated model roles: Sonnet 5.5 deploys 100 parallel builder sub-agents across 2,160 reasoning seeds in isolated git worktrees Haiku 5.5 acts as an adv

Posted by marfin (5.5k followers) 2 days ago · 86 likes · 4.1k views · view the original post on X. Kept by the Dev Radar as AI dev tools. Tools mentioned: arena-skill.

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