Should you find a cofounder or stay solo

You will hear two slogans. One says you must find a cofounder or you will fail. The other says real builders go alone. Neither is the whole story. The useful questions are narrower. What work is missing? Will you learn it? Is equity the right fix?

Indiecity is for one person or a team under twenty. Finish this knowing whether to stay solo this quarter, hire, or invite someone into the company.

Two games, two answers

Venture startups and bootstrapped products need different teams. Mix the advice and you will split equity for the wrong reason.

Paul Graham listed single founder as the first of the 18 mistakes that kill startups. His case is blunt: starting is too hard for one person, and the low points are hard to bear alone. In another essay he called no cofounder a real problem and said all investors are more likely to fund you with a cofounder. That is still true if you want to raise. If you want that path, treat the cofounder search as part of the work.

Not having a cofounder is a real problem. A startup is too much for one person to bear.

Now the other game. Pieter Levels has said to do it yourself: you do not need a technical cofounder if you can learn to ship, groupthink slows you down, and being alone helps you ship faster. He ships as a solo founder. That advice fits a small product you can sell without a board deck.

Rob Walling has done both. He built early products alone. He cofounded Drip with Derrick Reimer. He has also said that loneliness is not an automatic reason to split the company. Both answers can be right. It depends on the company you want.

The decision rule

Walk these five questions in order.

1. Name the gap in plain words: code, sales, marketing, product judgment, or stamina. If you cannot name it, you want someone to sit with you, not a cofounder.
2. Ask whether you will learn enough of that gap in the next 90 days to get a paid customer. If yes, stay solo and learn. If no, keep going.
3. Ask whether cash can buy the gap (contractor, agency, part-time hire). If yes, buy it. Do not pay with equity for a temporary skill.
4. Ask whether the other person will take founder risk for years: same hours, same downside, same outlook on raise vs bootstrap and sell vs keep. If no, they are not a cofounder.
5. Only then offer equity, with vesting, after you have already worked together under stress.

Default: stay solo until someone pays, unless a permanent gap blocks shipping or selling and cash cannot close it.

When staying solo is the right call

Stay solo when the product is still an experiment. A cofounder before anyone pays adds politics before it adds revenue. You still need buyers. How to get your first 10 paying customers without ads does not require a second equity holder.

Stay solo when you can scrape by at the Core Four. In November 2025, Walling framed those as sales, marketing, product, and development. His rule of thumb: if you can do them well enough to get something people want, and you are willing to grow into the weak ones, you do not need a cofounder. Jack of all trades is the early job description.

Stay solo when speed and control matter more than having two people's hours. Levels’s point about groupthink is practical: two people can talk each other into a product neither would ship alone. One person ships a thin version and finds out.

Stay solo when the job is still nights and weekends. Building on the side until the product pays is hard enough with one calendar. A second founder with a different day job often means meetings about meetings.

• You can ship a thin product people can pay for.
• You can name 30 buyers and send messages yourself.
• You want full ownership while the idea is still wrong.
• You will use contractors or tools for peak load, not equity.
• You have peers (mastermind, community) so you are not deciding alone.

When a cofounder is the right call

Find a cofounder when a gap is lasting and large enough to stop the company. You will not learn enough sales this year and you will not hire sales with cash. You cannot build or maintain the product and AI tools are not enough. Feeling behind is not a gap. A gap is a skill this company cannot run without, and you will not learn it or hire it.

Find a cofounder when you want equal skin for equal risk. Graham’s friendship test still matters. Startups do to the relationship between the founders what a dog does to a sock: if it can be pulled apart, it will be. Like each other enough to disagree hard and keep shipping.

Find a cofounder when you are raising from people who fund teams. That is a real constraint, not a mood. Bootstrap and venture need different teams. Do not pretend a solo bootstrap and a YC application need the same team.

Arvid Kahl’s write-up is useful here: you do not strictly need a cofounder, but a good one helps a lot. He starts with communication, then alignment on contribution, wealth, share split, vesting, and whether you bootstrap for life or raise later. Those are the places cofounder deals die.

• A skill gap you refuse to learn and cannot hire for yet.
• Someone you have already built with under deadline pressure.
• Shared view on money: raise or not, salary or not, sell or not.
• Willingness to vest and to write who owns which decisions.
• Hours: the pipeline or product needs two full-time people, not one hero week.

Hire, contract, or peer before you split equity

Most “I need a cofounder” posts are really “I need marketing,” “I need code,” or “I need someone to talk to.” Those are three different problems.

Walling’s episode on the Core Four is aimed at technical founders who ask whether a sales and marketing cofounder is the fix. His alternatives are hire, agency, contractor, or learn it yourself. Equity is the expensive option. Use it when you want a peer for years, not a campaign for a quarter.

If you are lonely, get a mastermind or a weekly call with builders who ship. That is cheaper than a bad 50/50. Attend a conference. Join a room of people under twenty. Still send the customer notes yourself.

Write one page: what you ship in 90 days, who sells, who builds, how money leaves the company, bootstrap or raise, and what happens if one of you stops. If you cannot agree on the page, you will not agree in month six.

How to test a cofounder without marrying them

Do not recruit from a single coffee chat. Graham’s point that you need to work with someone to know them still holds. Run a short project with a real deadline: a landing page with a price, ten sales conversations, a feature a paying user needs. Split the work. Meet twice a week. Watch who does the ugly parts.

1. Week 1. Agree on the offer and the buyer. No brand workshop.
2. Weeks 2 to 4. Ship one sellable slice. One of you talks to buyers every day.
3. Week 4. Count paid or booked. Count who did the work they said they would.
4. Only if both of you still want the next quarter together, talk equity and vesting.

Vest. Kahl treats that as non-negotiable. Equal split is fine when risk and work are equal. It is not fine when one person has a live product and the other has a notion. Write it down.

What changes in 2026

Building is cheaper. AI writes a lot of the boring code. A non-technical founder can often ship a thin paid product without hunting a CTO on day one. That makes solo more viable for the first version.

Selling is not cheaper. Inboxes are full of the same AI openers. Levels’s 2026 point about factories with no traffic still applies: a second founder who only polishes the product does not fix how you get customers. If your gap is buyers, the answer is still conversations and a price, whether you are one person or two. Walling’s Core Four is still the map for that gap.

A one-week decision

1. Day 1. Write the gap in one sentence. “I need a cofounder” is not the gap. “I will not do sales calls” is.
2. Day 2. List three ways to close the gap without equity: learn, contract, hire later.
3. Day 3. If you still want a person, list two people you have already worked with. Cold cofounder apps are last resort.
4. Days 4 to 6. Run a paid-customer action alone (ten notes, one offer, one price). See what actually blocks you.
5. Day 7. Choose: solo for 90 days, hire/contract, or a 30-day work trial with one named person.

Keep a simple scoreboard: shipped, conversations, paid. A cofounder who does not move those numbers is a roommate with stock.

What to stop doing

• Posting “looking for technical cofounder” before you have talked to a buyer.
• Offering 50% to someone who has not done the work.
• Using a cofounder search to avoid learning sales.
• Using “I go solo” as a reason to refuse all help, including paid help.
• Copying YC team advice onto a small paid product, or copying Levels onto a company you plan to raise for.
• Ignoring misgivings about a partner because you fear being alone.

Make the call, then do the work

Solo and cofounder both work. Solo companies fail. Cofounder fights happen. The rule is simple: name the gap, prefer learning and cash before equity, and only split the company with someone who already proved they will carry the work.

If you stay solo and get to ten people who pay, write that story. When the product is real and the name is yours, put it on the map. A partner can join later. A bad partner is hard to unwind. Until then, ship and ask for the money.