I Was Paying $0.006 Per URL for SEO Audits Until I Realized Most Needed $0

Pascal CESCATO read my SEO audit agent piece and left this in the comments: "You don't need an LLM for this. Everything you're sending to Claude can be done directly in Python — zero cost, fully deterministic, no hallucination risk." He was right. And wrong. And the conversation that followed is the reason I rebuilt the entire thing. What Pascal Actually Said The audit agent I published checks title length, meta description length, H1 count, and canonical tags. Pascal's point: those are character counts and presence checks. A regex does that. You don't pay $0.006 per URL for a regex. I pushed back. The flags array requires judgment — "title reads like a navigation label rather than a page description" isn't a character count. Pascal conceded, then reframed: "Two-pass makes more sense. Deterministic Python for binary checks, model call only on pages that pass the mechanical audit but need a second look. You pay per genuinely ambiguous case, not per URL." That's a better architecture tha