APR 7, 2026Latent.Space
Extreme Harness Engineering for Token Billionaires: 1M LOC, 1B toks/day, 0% human code, 0% human review — Ryan Lopopolo, OpenAI Frontier & Symphony
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Harness engineering is the new context engineering
“Move over, context engineering. Now it’s time for Harness engineering and the age of the token billionaires.”
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Deploy production code without human review
“no human REVIEWED code before merge.”
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Consume one billion tokens every day
“borderline “negligent” if you aren’t using >1B tokens a day”
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Structural improvements beat better prompting
“instead of prompting it better or to “try harder,” the team would look at “what capability, context, or structure is missing?””
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Optimize codebases for agent legibility
“optimize an entire codebase, workflow, and organization around agent legibility instead of human habit.”