AI Strategy7 min

Why Your AI Vendor's ROI Promise Is Probably Wrong

Gartner's April 2026 survey found only 28% of AI projects fully deliver ROI. Three systematic errors explain why vendor projections collapse against actual results: baseline neglect, cost exclusion, and attribution confusion. A five-question framework for evaluating AI vendor claims before you commit.

What You'll Learn

A five-question evaluation framework for testing AI vendor ROI claims against your actual operations. The framework covers baseline measurement, total cost accounting, comparable evidence, attribution methodology, and outcome-based pricing.

AI vendor ROI claims are the projected return-on-investment figures that consulting firms, SaaS platforms, and automation vendors present during sales. They express expected savings or revenue gains as percentages or dollar amounts. The gap between these projections and actual measured results is the central measurement problem in enterprise AI adoption.

Gartner published data on April 7, 2026 from a survey of 782 infrastructure and operations leaders: only 28% of AI projects fully succeed and meet ROI expectations (Gartner, April 2026). One in five fails outright.

McKinsey's 2026 Global AI Survey tells a parallel story: 88% of organizations now use AI in at least one function, but only 39% report any impact on enterprise-wide EBIT (AI Governance Today, citing McKinsey 2026). Adoption is widespread, but measured returns remain scarce.

AI works. The vendor ROI projections surrounding it are structurally flawed, because they contain three systematic errors that inflate expected returns before a single line of code runs.

Frequently Asked Questions

What percentage of AI projects actually deliver ROI?
According to Gartner's April 2026 survey of 782 infrastructure and operations leaders, only 28% of AI projects fully succeed and meet ROI expectations. McKinsey's 2026 Global AI Survey puts the failure rate at 73%, and RAND Corporation data shows an overall 80.3% failure rate across all AI project types.
Why do AI vendor ROI projections fail?
Three systematic errors explain most failures: baseline neglect (no pre-deployment measurement to compare against), cost exclusion (omitting integration, training, and change management from total cost), and attribution confusion (crediting AI for improvements that would have happened through normal process optimization).
How should a business evaluate AI vendor ROI claims?
Ask five questions before signing: Does the vendor require baseline measurement before deployment? Does their cost model include integration, training, and change management? Can they show ROI data from businesses of similar size and industry? Do they define what counts as AI-driven improvement versus process improvement? Will they tie payment to measurable outcomes?
What is a realistic timeline for AI ROI?
Most AI implementations take 3 to 6 months to show measurable returns. Vendor projections that promise ROI within weeks typically exclude the learning curve, integration complexity, and workflow adjustment period. Gartner found that 57% of failed AI projects suffered because organizations expected too much, too fast.