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WORTH TESTING · 20 OCTOBER 2026

The 'Anthropic engineer builds a harness in 10 minutes' video is a 2025 Claude Code keynote

1 source · Part of the 20 October 2026 edition

Verdict: a clear, honest demo of an AI coding agent, but old and not about harnesses.

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Hype or Fact?

Worth testing

The 'Anthropic engineer builds a harness in 10 minutes' video is a 2025 Claude Code keynote: steps to try, cost and caveat

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How we knowCompany figures are labelled as their own claims; anything we couldn't verify is labelled as a report or a claim.

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