In February, AI coding startup Windsurf was in talks to boost a giant new spherical at a $2.85 billion valuation led by Kleiner Perkins, at double the valuation it hit six months earlier, sources instructed TechCrunch on the time. That deal didn’t occur, in line with a supply conversant in the matter. As an alternative, information broke in April that the startup deliberate to promote itself to OpenAI for roughly the identical valuation: $3 billion.
Whereas that deal famously fell aside, one greater query stays: if the startup was rising that quick and attracting VC curiosity, why would it not promote in any respect?
Insiders inform TechCrunch that for all the recognition and hype round AI coding assistants they’ll really be massively money-losing companies. Vibe coders typically, and Windsurf particularly, can have such costly buildings that their gross margins are “very destructive,” one particular person acquainted near Windsurf instructed TechCrunch. That means it value extra to run the product than the startup may cost for it.
That is as a result of excessive prices of utilizing giant language fashions, the particular person defined. AI coding assistants are significantly pressured to all the time supply the latest, most superior, and most costly LLMs as a result of mannequin makers are significantly fine-tuning their newest fashions for enhancements in coding and associated duties like debugging.
This can be a problem compounded by fierce competitors within the vibe coding and code-assist market. Rivals embody corporations that have already got enormous buyer bases like Anysphere Cursor and GitHub CoPilot.
Essentially the most simple path to enhancing margins on this enterprise entails the startups constructing their very own fashions, thereby eliminating prices of paying suppliers like Anthropic and OpenAI.
“It’s a really costly enterprise to run for those who’re not going to be within the mannequin sport,” stated the particular person.
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However that concept comes with its personal dangers. Windsurf’s co-founder and CEO, Varun Mohan finally determined towards constructing its personal mannequin — an costly enterprise, the particular person stated.
As well as, mannequin makers are already competing instantly. Anthropic provides Claude Code and OpenAI provides Codex, as an example.
Promoting the enterprise was a strategic transfer to lock in a excessive return earlier than it might be undermined by the very corporations that equipped its AI, together with OpenAI and Anthropic, which have been additionally getting into the AI coding market.
A number of folks imagine that the identical stress on margins Windsurf confronted might be impacting Anysphere, the maker of Cursor, in addition to vibe coders like Lovable, Replit and others.
“Margins on all the ‘code gen’ merchandise are both impartial or destructive. They’re completely abysmal,” stated Nicholas Charriere, founding father of Mocha, a vibe coding startup and backend internet hosting answer serving small and medium companies (SMBs). He added that he believes the variable prices for all of the startups within the sector are very shut, doubtless inside 10% to fifteen% of each other.
Not like Windsurf, Anysphere has been rising so quick that it intends to stay an unbiased firm, having already turned down acquisition provides, together with, studies say, from OpenAI.
And Anysphere introduced in January that it’s trying to construct its personal mannequin, which may give it extra management over its bills. In July, the startup employed two leaders from Anthropic’s Claude Code staff, the Info reported, however two weeks later, these workers returned to work at Anthropic.
Along with constructing a mannequin, Anysphere may count on the price of LLMs to lower over time.
“That’s what everybody’s banking on,” stated Eric Nordlander, a normal accomplice at Google Ventures. “The inference value at this time, that’s the most costly it’s ever going to be.”
It’s not fully clear how true that’s. Somewhat than falling as anticipated, the value of among the newest AI fashions has risen, as they use extra time and computational sources to deal with sophisticated, multi-step duties.
When that may change stays to be seen. On Thursday, as an example, OpenAI launched a brand new flagship mannequin GPT-5 with charges which might be considerably lower than its competitor, Anthropic’s Claude Opus 4.1. And Anysphere instantly supplied this mannequin as a selection for Cursor customers.
Anysphere has additionally not too long ago modified its pricing construction to go alongside the elevated prices of working Anthropic’s newest Claude mannequin, significantly to its most energetic customers. The transfer caught a few of Cursor clients unexpectedly, since they didn’t count on further fees on high of its $20-per-month Professional plan. Anysphere CEO Michael Truell later apologized for unclear communication concerning the pricing change in a weblog publish.
That is the rock and the exhausting place. Though Cursor is among the hottest AI functions, having reached $500 million in ARR in June, the corporate’s person base will not be so loyal to the product if one other firm develops a device that’s superior to Cursor, traders say.
Anysphere didn’t reply to a request for remark.
Given the aggressive panorama and the prices, Windsurf’s determination to get out could show to be comprehensible. After the OpenAI deal fell by way of, the founders and key workers left to affix Google in a deal that led to a $2.4 billion payout to key shareholders. The remaining enterprise then offered itself to Cognition.
Whereas many, together with distinguished VCs, criticized Mohan for leaving roughly 200 workers with out roles at Google, a supply conversant in the deal insisted the acquisition really maximized the outcomes for all workers.
Past Cursor, different AI coding instruments are additionally among the many quickest rising startups of the LLM technology like Replit, Lovable, Bolt and all of them depend on mannequin makers, as nicely.
Moreover, if this extraordinarily widespread enterprise sector, already producing lots of of hundreds of thousands in income or extra a 12 months, has issue constructing on high of mannequin makers, what would possibly it imply for different, extra nascent industries?
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