11x raised $74m to sell autonomous sales reps. Early churn ran 70 to 80 percent

In September 2024 a London startup called 11x announced a $24 million Series A led by Benchmark, and nine months later a $50 million Series B led by Andreessen Horowitz ^[1][2]. The pitch was AI "digital workers" that would do the whole job of a sales development rep ^[3]; on March 24, 2025, TechCrunch reported that the company had been displaying customer logos for companies that were not customers, and that current and former employees put early churn at 70 to 80 percent ^[4][5]. In May, founder and CEO Hasan Sukkar moved into a non-executive chairman role ^[6].

That is roughly $74 million of disclosed funding ^[7] behind a product that, on those employee accounts, retained 20 to 30 percent of its early customers ^[8]. The number is the interesting part, because churn that steep is not a go-to-market problem. It is a statement about what the software did once it was switched on.

The useful way to sort this category is by how much work stays with a human ^[11]. Data tools find the contact, fill in what is missing about the company, and watch for events worth reaching out about; they write nothing and send nothing, and Clay is the clearest example ^[12]. Coaches grade the message as a rep types it and flag lines that read like a template, with nothing sent until someone clicks send; Lavender built its product around that single job ^[13]. Hybrids pick targets and draft, then stop for approval and cap daily volume; Regie.ai and Salesforge sit here ^[14]. Autonomous AI SDRs run the entire loop unsupervised, which is what 11x sold, and where outcomes swing hardest because nobody in the chain catches bad writing before it lands in thousands of inboxes ^[15].

The published performance data explains why the narrow tools hold. Vendor case studies rarely disclose who was on the list ^[16], and the list is most of the result: cold names who have never heard of you reply at around 1 percent, while people contacted the week they changed jobs or their company raised can hit 5 percent ^[17], a fivefold spread that has nothing to do with model quality ^[18]. Instantly's benchmark report put the average reply rate across its platform at 3.43 percent, and noted that 58 percent of all replies came from the first email ^[19][20], leaving 42 percent for every follow-up combined ^[21]. AiSDR, which sells one of these tools, reviewed 75 customer rollouts and reported that the gains concentrated in teams whose outbound already worked, at two to three times ^[22]. Read plainly, that is a vendor saying its software multiplies an existing process rather than creating one.

Two things to watch. First, whether autonomous vendors quietly reposition as hybrids by adding approval gates and volume caps ^[14], since that is the cheapest way to keep the category label while removing the failure mode. Second, whether any of them publish retention alongside reply rates. 11x's reply rates were never the problem ^[5]; buyers who renew are the only benchmark that survived this episode, and the ones now getting traction do narrower jobs ^[9].