The B4 Framework — methodology
Two axes.
Four verdicts.
X · Strategic differentiation: does owning this system make you different in a way customers pay for?
Y · AI feasibility: could a competent team, with today's models, actually build and run it?
Every category's position falls out of five dimensions, scored 1 to 5.
Own it, iterate fast. High differentiation, high AI feasibility. Your competitive advantage lives here, and AI can build it. Your processes become your software.
The five dimensions — scored 1 to 5
Specificity
Sets the X axis
How deeply the system encodes processes that are yours: data models, rules, workflows nobody else runs. Higher specificity means you need more customization, and buying generally costs more in integration and customization.
Strategic control
Sets the X axis
Are you going to be faster, better, or cheaper than your competitors by building a custom version of this software for your business?
AI feasibility
Sets the Y axis · evidence-graded
Buildability: can a competent team build and operate a custom alternative? Grounded in evidence-based research. AI feasibility doesn't score high unless teams have already built it in production, and a category whose only evidence is bolted-on AI features caps at 2.
Vendor value
Urgency modifier
How much value the vendor you're paying for offers. Will you use 20% of the features or 80%? It helps you determine how fast to act inside a quadrant.
Cost trajectory
Urgency modifier
Where the pricing is headed. Rising costs on a buildable commodity move a renewal from "someday" to "let's build it."
Trust is built in
01
Categories, not vendors
Vendors churn, get acquired, pivot. A category's structural position moves slowly — which is what makes a score worth publishing and re-checking.
02
It re-scores itself
A weekly job cycles the whole index quarterly. Every score lands as an append-only snapshot with its full five-dimension state. 1,609 and counting.
03
No vendor money
Analysts get paid by the vendors they rate. B4's one revenue source is the buyer. Only 7% of the index says build — a framework that says "build everything" is a marketing document.
Run it on your own stack.
Search every scored category, check the dimensions, and challenge a verdict. Go Pro for the full directory, filters, and exports. Or connect your AI directly to the database through MCP.