Most fractional CTOs are pure-technical: architecture, hiring, stack decisions, security accountability. That is genuinely valuable, and if your product side is already solved, a pure-technical fractional is a clean fit and often cheaper than us.
Our difference is that both founders carry product-management depth in the same head as the technical call. The person deciding your architecture is the same person who can decide whether the feature belongs on the roadmap at all. You are not coordinating a CTO and a product lead who disagree about priority every Tuesday.
That matters when the technical and product questions are tangled, which before product-market fit they almost always are. “Build it on this stack” and “build it at all” are not separate conversations when you are still finding the product.
If your product direction is locked and you only need engineering executed and led, a pure-technical fractional wins on focus and price. If the two questions are still one question, you want the combined role. That role is closer to a CTPO; see how we run it.