B4 Pro

The Index shows you how to think.
B4 Pro tells you what to do.

The public Index lays out how to reason about building versus buying any of 1,606 software categories. B4 Pro gives you the answer: the call, the numbers behind it, the full vendor field, and a live feed as the market moves.

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How to think · public

·The Framework. Two axes, four calls, five dimensions.
·The Directory. 1,606 categories you can search.
·The Considerations. The build case and the buy case on each.

What to do · B4 Pro

→The verdict. Build, Buy, Bridge, or Beware.
→The numbers. The scorecard, the vendors, the pricing.
→The trajectory. Where it's heading, live, via the Continuum and MCP.

Made for your AI stack

You bring the AI. B4 brings the judgment.

B4 Pro isn't one more dashboard to log into. It's the decision layer your own AI tools pull from. Connect the MCP and your agents query the verdict, the scorecard, and the vendor field directly. A stack review or a diligence pass that used to take an analyst a week runs in a few minutes, grounded in an independently researched and hardened score. You get a deeper, no-nonsense professional assessment that is up to date with the market and grounded in real build-versus-buy decisions and changing market dynamics.

What B4 Pro gives you

The Verdict

Build, Buy, Bridge, or Beware on every one of the 1,606 categories. The call the public Index holds back.

The 5-Dimension Scorecard

Specificity, AI feasibility, vendor value, strategic control, and cost trajectory, each scored 1 to 5 with the reasoning behind it.

8K Vendors, With Pricing

The full vendor field for each category, with pricing and positioning, well past the two names everyone else sees.

The Continuum

A live, longitudinal read on AI's progression across the software landscape. Where the ground is moving, how fast, why, and what to do about it.

A Live MCP Server

Query the Index from Claude or your own tools. Re-scores flow straight in, so your agents always get the current call, not a stale export.

API, SDK, and Export

Pipe B4 into your stack, or pull the whole index to CSV and JSON whenever you need it.

Built for the people making the call

Priority use case

Venture Capital and Investors

Underwrite the category, not just the company.

Before you wire the money, see how defensible the position really is. B4 scores the category a target SaaS company, or a raw idea, lives in on strategic differentiation and AI feasibility, so you can tell a real moat from one AI is about to erase. Use it to pressure-test whether a company is actually worth investing in, or to gut-check an idea before it ever raises. The Continuum shows you where the category is heading before it shows up in the metrics.

Technology leaders

Walk into planning with the call already made on your stack.

Rationalize a sprawling application stack against an independent score instead of vendor decks. The verdict, the scorecard, and the vendor field give you a defensible position on keep, kill, build, or bridge for every line item.

Executives and operators

Stop renewing on autopilot.

Know which tools earn their keep, which AI has quietly made optional, and which deserve real investment. The reasoning is there to defend the decision to a board or a budget owner.