Matt Turley, Continuum. Updated September 30, 2026.
If you are a non-technical founder choosing between fractional CTO services and bringing on a technical cofounder, the real trade is cash now versus ownership forever.
You need a technical cofounder when the technology is the company and you want one person carrying it with you for years, paid mostly in equity. You need a fractional CTO when you need senior technical judgment and a working product now, paid as a monthly fee, while you keep your equity and can end it. Many founders start fractional, prove the business, and add a cofounder or full-time CTO once they know exactly who they need.
| Technical cofounder | Fractional CTO | |
|---|---|---|
| How you pay | Equity, usually vested over years | A monthly fee, no equity by default |
| Commitment | Years, often full-time | Month to month, part-time |
| What you get | An owner who carries the company with you | Senior judgment and delivery, now |
| Speed to start | Slow: finding the right person can take months | Fast: often within weeks |
| If it goes wrong | Hard to undo, equity is involved | End the engagement |
If the honest need is smaller still, say a one-time build or a fix before launch, you may not need a CTO of either kind yet. A fixed-price project covers it.
A technical cofounder costs equity. How much depends mostly on when they join and how much risk is left. Someone joining before there is a product usually expects a large share; someone joining after the product works expects less. Whatever the number, the standard protection is vesting over several years with a cliff, so equity is earned, not handed over. Our guide on how much equity a technical cofounder should get walks through the ranges by stage, and the cofounder equity agreement guide covers what to put in writing.
The share is often bigger than founders expect. In Carta’s 2025 data, 44.6% of two-founder teams split equity exactly equally, and the median split was 51 to 49.1 That stake also shrinks as you raise: the median founding team owns 55.8% of the company after a seed round and 36.2% after a Series A.1
A fractional CTO costs a fee. It is usually a monthly retainer sized to how many hours a week they are in the work. Go Fractional’s September 2026 data puts the middle 50% of rates at $170 to $250 an hour, or $10,200 to $15,000 a month for about 15 hours a week.2 See what a fractional CTO costs for the full breakdown. At Continuum, our Partner retainer is $500 to $10,000 a month across five levels, with no equity, and every price is on the pricing page.
Cofounder risk is mostly about people. A split agreed in the excitement of week one is hard to change later. Partners drift apart, or one ends up doing more of the work. Without vesting and written roles, a cofounder who leaves early can walk away with a large piece of the company. Carta found that 25% to 35% of two-founder teams that started between 2016 and 2021 had split up within five years.1
Fractional risk is mostly about attention. A fractional CTO has other clients. If nobody owns the code day to day, work stalls between their hours. And some people sell advice without delivery. Ask to see live products they have shipped and kept running, and make sure you own the code and accounts from day one.
Tell me where the company is and what is blocking it. I will tell you which of the three fits, including when the answer is a cofounder and not me. If you already know you need a product built first, see the MVP Build.