Lesson 07 of 20
Compare Three Consulting Bids With AI — The $15K Spread That's Really $750
Supplier Screening & Evaluation · Professional Services (consulting)
Synthetic case data — evidence from real ChatGPT, Claude, Gemini and Copilot runs.
Practice file: Download
case-file.txt— three consulting proposals in one file, ready to paste into any AI tool (Copilot free, ChatGPT, or Claude). You'll need it for the exercises below.
Three consulting proposals are on your screen. The first is a clean role-by-role rate card: four seniority levels, hours next to each, a subtotal. The second is a two-page letter from a managing partner quoting one blended rate, no roles, travel included — "no surprises." The third is a four-phase fixed fee with an asterisk next to Phase 2 you haven't read yet. Your VP wants one recommendation for Thursday's steering committee: which firm is the best value for the eight-stream process-improvement engagement?
Headline prices: $237,250, $235,200, $222,000. A $15,250 spread. Pick the cheapest and move on — that's the instinct. Hold it. By the time you've normalized these three the way you normalized the SaaS quotes, that spread collapses to $750, and the real decision won't be about price at all.
You’ve read the free three. The other seventeen are where the misses live.
The first lessons show what a general-purpose AI catches on a procurement task. The rest show what it misses — the unit conversion that survives an expert prompt, the two clauses it lists but never connects, the table that contradicts its own arithmetic. That gap is the job.
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