A full-time senior hire is the right answer eventually. It is also a twelve-month commitment plus equity, made at the exact moment you have the least information about what the role actually needs to be.
We exist to bridge that gap. Before you know whether you need a founding CTO writing code or a scale-up CTO managing twenty engineers, hiring either one is a bet you can lose for eighteen months. A fractional operator gives you senior judgment now, without the runway exposure, and makes the eventual hire sharper, because by then you will know the real shape of the role.
Post product-market fit, with a clear mandate and the revenue to support it, hire. A permanent person compounds in ways a fractional cannot, and we will tell you when you have crossed that line. Before that point, the wedge is cheaper and reversible.
If the right permanent hire is still unclear, that is exactly the window where a fractional CTO beats a premature one.