{"id":2109,"slug":"keyword-difficulty-as-triage-only","title":"Factor 6 — Keyword difficulty as triage only, not a measurement","kind":"reference","scope":"business","status":"current","audiences":["kevin","candid-team"],"topics":["keyword-difficulty-tool-limits"],"reference_body":"**Claim:** Keyword Difficulty (KD), aka SEO difficulty, is a **0-100 proprietary score** estimating how hard it is to rank on page one. Each tool uses a different formula:\n\n- **Ahrefs** weights referring domains heavily.\n- **Semrush** uses a multi-factor formula including authority + SERP features.\n- **Moz** leans on Page/Domain Authority of top 10.\n\nIndependent practitioner tests show LARGE divergences — same keyword can score, e.g., **KD 23 in one tool, 58 in another, \"medium\" in a third.** Frequent 0/100 edge values misrepresent real difficulty.\n\n**Core limits:**\n\n- **Low predictive validity.** Practitioner (Omniscient Digital) notes KD has \"low to no predictive validity\" and only one study correlates KD with performance — with weak statistics.\n- **Ignores your domain.** A \"low KD\" keyword is still unwinnable if the top results are Wikipedia or a government site — link counts don't capture brand/entity authority.\n- **Ignores intent and commercial value.** A KD-5 keyword with no buyer intent is worth less than a KD-40 keyword with qualified buyers.\n\n**Confidence:** Industry-consensus / Single-source.\n\n**Why this matters for Candid:** KD is a legitimate triage / prioritization signal — useful to separate \"obviously brutal\" from \"possibly winnable\" — but must NOT be presented as a precise difficulty measurement, and the actual SERP must be inspected. If the widget ingests any vendor KD score, show it as a rough band and pair with a \"look at who actually ranks\" prompt.","rationale_body":null,"metadata":null,"links":{"outgoing":[],"incoming":[{"slug":"research-brief-smb-widget-market-difficulty-june-2026","title":"Research brief: SMB widget market difficulty — six ranked factors (June 2026)","kind":"reference","scope":"business","link_type":"depends-on"}]},"created_at":"2026-06-23T19:16:04.253Z","updated_at":"2026-06-23T19:16:04.253Z"}