How to validate a SaaS idea in 2026

Every playbook I read in 2016 started with 'spend two weeks on customer discovery.' It was reasonable advice when software took a quarter to build and a quarter to launch. In 2026 the build cycle for a validated idea is closer to two weeks end-to-end, so a two-week discovery at the front is a hundred percent overhead. The playbook has to compress.

The shortest sensible path

• Score every idea in your notebook with AI in under a minute each. Distribution first, not picking.
• Take the top three. Put the bottom three in the graveyard, unedited. Don't mourn.
• Run Devil's Advocate on your top pick before you get attached to the headline number.
• Interview three potential customers. You earn the right to interview by scoring well on paper first.
• Ship the thinnest possible version to those three people. Not to a list, to three people.

Speed is a compounding asset. A founder who runs this loop weekly tries fifty-two variations a year. A founder who runs the 2016 playbook tries four. The bet you're making isn't 'AI scoring is better than customer interviews.' It's 'more calibrated attempts beat fewer precise ones.' The evidence says that bet wins.