Windsurf, the favored vibe coding startup that’s reportedly being acquired by OpenAI, stated Anthropic considerably decreased its first-party entry to its Claude 3.7 Sonnet and Claude 3.5 Sonnet AI fashions.
Windsurf CEO Varun Mohan stated in a submit on X that Anthropic gave Windsurf little discover for this variation, and the startup now has to search out different third-party compute suppliers to run a number of of Anthropic’s hottest AI fashions on its platform.
“We have now been very clear to Anthropic that this isn’t our want – we needed to pay them for the complete capability,” stated Mohan on X. “We’re disillusioned by this determination and brief discover.”
In a weblog submit, Windsurf stated it has some capability with third-party inference suppliers, however not sufficient, so this variation might create short-term availability points for Windsurf customers attempting to entry Claude.
The choice comes just some weeks after Anthropic appeared to cross over Windsurf in the course of the launch of Claude 4, the corporate’s new household of fashions, which supply trade main efficiency on software program engineering duties.
On launch day, Windsurf stated it didn’t obtain direct entry from Anthropic to run Claude 4 on its platform, and nonetheless hasn’t. This pressured the corporate to depend on a workaround that’s costlier and sophisticated for builders to entry Claude 4. In the meantime, different widespread AI coding instruments — together with Anysphere’s Cursor, Cognition’s Devin, and Microsoft’s GitHub Copilot — appeared to have direct entry to Claude 4 fashions at launch.
The AI-assisted coding sector, additionally know as vibe coding, has heated up in latest months. OpenAI reportedly closed on a deal to amass Windsurf in April. On the similar time, Anthropic — whose AI fashions are a favourite amongst builders — has invested extra in its personal AI-coding purposes. In February, Anthropic launched its personal AI coding utility, Claude Code, and in Might, the startup held its first Code with Claude developer convention.
“We’re prioritizing capability for sustainable partnerships that enable us to successfully serve the broader developer group,” stated Anthropic spokesperson Steve Mnich in an electronic mail to TechCrunch on Tuesday, noting that it’s nonetheless doable to entry Claude 4 on Windsurf through an API key. “Builders can even entry Claude by our direct API integration, our accomplice ecosystem, and different growth instruments.”
Windsurf has grown shortly this yr, reaching $100 million ARR in April, in an try and meet up with extra widespread AI coding instruments reminiscent of Cursor and GitHub Copilot. Nevertheless, Windsurf’s restricted entry to Anthropic’s fashions could also be stunting its progress.
A number of Windsurf customers who spoke with TechCrunch had been annoyed by the dearth of direct entry to Anthropic’s finest AI coding fashions.
Ronald Mannak, a startup founder that makes a speciality of Apple’s programming language, Swift, informed TechCrunch that Claude 4 represented a major leap in capabilities for his workloads. Whereas Mannak has been a Windsurf buyer since late 2024, he’s switched to utilizing Cursor in latest weeks in order that he can vibe code extra simply with Claude 4.
As a short-term answer to help Claude 4, Windsurf permits customers to attach their Anthropic API keys to their Windsurf accounts. Nevertheless, builders have famous that this “carry your individual key” answer is costlier and sophisticated than if Windsurf offered the fashions itself.
In the case of vibe coders, optionality is the secret. Each few months, OpenAI, Google, and Anthropic launch new AI fashions that appear to outperform the trade on coding duties. Due to that, it advantages vibe coding startups to help AI fashions from all of the main builders.
Windsurf spokesperson Payal Patel tells TechCrunch through electronic mail that the corporate has all the time believed in offering optionality for customers. On this case, it appears Anthropic has made {that a} bit tougher.