A full-time CTO hire takes 6–18 months to recruit, costs $250,000–$400,000+ annually before equity, and requires a stable enough roadmap to justify the headcount. Most companies that actually need a CTO need one now, not in a year—and need someone who can execute, not just manage.
A fractional CTO engagement starts in days, not months. You get a defined scope—AI architecture review, engineering team build-out, agentic system design, technical due diligence—with a clear deliverable and a known cost. When the scope is complete, you extend, transition to a full-time hire we helped you vet, or continue on retainer. No 6-month executive search, no full-time salary.
The cases where fractional is the right call: you have a technical product to build and no technical co-founder; you raised capital and need to hire engineers without a technical leader to evaluate them; you are integrating AI into existing software and need someone who has actually shipped production agentic systems—not someone who read the playbook last quarter.