B2B SaaS 何时组建销售团队：AI 时代门槛与信号

Amjad Masad, founder and CEO of Replit, posted the other day:

“I thought I hated sales culture. By the end of this year, more than half my company will be salespeople.”

He goes on: for most of the last decade he was a typical tech guy. Build a good product, put it on the internet, let it speak for itself. For years the entire marketing department was his Twitter account. Sales was what companies did when the product couldn’t carry itself.

Then the demand showed up. Companies started emailing them saying their employees were already using it, how do we buy it properly. On Replit’s side, one guy was handling those conversations on top of three other jobs. Four reps, and a market that wanted more than four reps could carry.

What changed his mind wasn’t a book or a mentor. It was watching the dinners work.

I wrote a version of this five years ago called “Eventually … Almost Everyone Has a Sales Team.” The list then was Twilio, Slack, Box, Stripe, Monday.com, Calendly, Canva. The pattern hasn’t changed. What changed is the number on the odometer when it happens, and how much of the P&L it eventually takes.

"If you're freemium and self-serve, you probably don't need a sales team to start.

But that often really just means deferring it.

Eventually, you'll build one up. It might be at $50m, $100m, even $500m ARR.

But in the end, almost everyone in B2B builds a sales team." pic.twitter.com/8nlggmJHVt

— Jason ✨👾SaaStr.Ai✨ Lemkin (@jasonlk) August 14, 2026

Seven things to take away:

• The trigger is never “the product stopped working.” It is almost always the opposite: demand arriving faster than a self-serve motion can absorb it.
• The first sales team never announces itself. It arrives as account management, or support, or one person doing it on top of three other jobs.
• The threshold moved. In the 2015-2022 era, PLG companies added real sales somewhere around $30M to $50M ARR. In the AI era it’s landing closer to $100M to $250M.
• Sales and marketing ends up at 23% to 44% of revenue at the public leaders. It is the largest line item in B2B software, larger than R&D at most of them.
• The company most famous for not having a sales team is the one growing its sales spend fastest right now.
• The AI-native leaders did not skip sales. Anthropic added 140+ salespeople in 18 months and now posts more sales roles than research roles.
• Waiting has a real cost, and the bill arrives all at once.

#1. The threshold ladder, then and now

“Everyone eventually sells” isn’t the useful part. The number where it stopped being optional is.

The pre-AI cohort:

• Monday.com stayed mostly self-service to roughly $30M-$40M ARR. After that, sales and success drove both faster growth and much higher NRR on the way to $240M and beyond.
• Slack was at roughly $30M ARR in February 2015 with no sales team at all, and staffed a serious one crossing $50M ARR.
• Calendly added its first real enterprise team around $50M ARR.
• Box now does roughly 90% of revenue through the sales team, from 0-1% as a pure freemium product.
• Stripe was self-serve and very SMB for years before building a full traditional enterprise team.
• Canva held out the longest, close to $1B ARR.

The AI cohort:

• Gamma reached $100M ARR with no sales team, and its CEO now calls that a mistake.
• Replit went from roughly $2.8M to $150M in annualized revenue in under a year, then raised $400M at a $9B valuation in March 2026 with the stated plan of international expansion and building out go-to-market. Now more than half the company will be salespeople.

So the threshold roughly tripled. The wall moved from $30M-$50M to somewhere north of $100M, and it is still a wall.

That’s good news and a trap at the same time. The demand you’re absorbing when you finally staff up has been piling up for a year.

2. The first sales team always shows up wearing a different title

In February 2015, at the first SaaStr Annual, I got to run a compare-and-contrast session with Stewart Butterfield of Slack and David Sacks, fresh off Yammer. Slack was around $30M ARR and hadn’t hired a single sales rep. The full session is here.

I asked Stewart the question everyone was asking: can you get to $100M without a sales team?

His answer is the part worth re-reading eleven years later. He said nobody at Slack had a title that said sales. They had account managers, and there was no outbound. Those account managers talked almost exclusively to people who had already decided to buy but worked at companies where purchasing isn’t something you can just do, where there’s a vendor review process and a security policy analyst and in-house counsel who wants to mark up the terms of service. He described the job as “midwifing the sale,” as opposed to being a salesperson. No commissions. He believed Slack could go without commissions and without outbound forever.

Now read Amjad’s post again. Companies emailing to ask how to buy it properly. One guy handling those conversations on top of three other jobs.

That’s the same job. Slack in 2015 and Replit in 2026 hit the identical wall: enterprise procurement showing up on the back of bottom-up adoption. The only difference is that Slack called it account management and Replit is calling it sales.

Which is the first practical lesson. The first sales team never announces itself. It arrives as account management, or support, or customer success, or the founder’s inbox. If you’re waiting for a moment where you decide to start selling, you’ll miss it, because by then several people are already doing it part-time and badly.

Sacks’ side of that conversation is the second lesson. Yammer figured out roughly six to nine months in that it needed sales. Virality was a tremendous lead generation engine, and they never spent a dime on marketing, but it still took a salesperson to get deals over the top. Then, once the sales team existed, they reverse-engineered every other classic function of an enterprise software company: marketing to enable sales, customer success to drive renewals. A whole org built out of the decision to hire the first rep.

Two companies, the same shape of business, and a gap of nearly a decade between when each concluded it needed sellers. Yammer sold all-or-nothing company-wide networks, so somebody had to make an enterprise-wide decision, which pushed it into enterprise IT immediately. Slack sold to teams, so it could ride bottom-up adoption much further. Adobe ended up with fourteen separate paid Slack instances. The problem that eventually created isn’t acquisition, it’s consolidation, and consolidation is a conversation with a human.

That’s the real variable, and it’s the one to apply to your own company. Not whether you’ll need sales, but how far the unit of adoption lets you go before someone has to negotiate a company-wide contract.

Slack did go on to sell very hard. By $1B ARR it was a sales-led and product-led company, with the majority of revenue in enterprise deals. Stewart wasn’t wrong in 2015. He was right about the phase Slack was in, and that phase ended.

3. The AI cohort already made this call, on our own stage

Two SaaStr AI 2026 sessions answer this question from opposite directions.

Grant Lee, co-founder and CEO of Gamma, got to $100M ARR with 50 employees, 50 million users and 600,000 paying subscribers, most of it with no sales team. Then he said this on stage:

“We’ve always for better or worse been sort of reacting… I would advise maybe not do that.”

The specific version of that: they hired sales only when the inbound got embarrassing. Waiting was not the strategy. It was the absence of one.