Test pyramid, after AI

Drag the cost of writing code toward zero and see where trust has to move.

testing ai

DemoTest pyramid, after AI

Drag the cost of writing code toward zero and see where trust has to move.

Unitcheap, many70%

Contractwhat you promised10%

Integrationsomething real15%

Production signalswhat actually happened5%

Cost of writing code

today

As writing gets cheaper, evidence that touches something real carries more of the trust.

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When code is expensive, the pyramid is wide at the bottom because unit tests are the cheapest evidence you can buy. When code is nearly free, the cheap evidence is also nearly free to fake — and the layers that talk to something real (contracts, integration, production signals) carry the weight.

This is a sketch, not a measurement. The real version will be fed by the test inventory of an actual repository.