by Anthropic
Claude Code mode that fans out many parallel sub-agents for deep tasks such as full codebase reviews.
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Ultra Code is a mode in Anthropic's Claude Code, the agentic coding tool, that distributes work across many sub-agents running in parallel. No official documentation page could be retrieved, so the details below rest on a single creator account and should be treated as provisional.
According to a YouTube creator (Matthew Berman), it was used with maximum thinking effort to run full code reviews, where it surfaced many bugs and security issues. The same review reportedly finished in about 10 minutes, compared with 60 to 120 minutes previously, because the work is parallelised.
The creator described it as very expensive, since many sub-agents each consume tokens. It is accessed through Claude Code, so it is aimed at developers working on existing codebases. Exact pricing, plan requirements and limits are not confirmed here.
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Mode in Claude Code that fans out many sub-agents. The creator used it with max thinking effort for full code reviews, and it found many bugs and security issues. It is very expensive but now finishes in about 10 minutes instead of 60 to 120.
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