Windsurf says Anthropic is limiting its direct entry to Claude AI fashions

[ad_1] Windsurf, the favored vibe coding startup that’s reportedly being acquired by OpenAI, says 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 publish on X Tuesday that Anthropic gave Windsurf little discover for this transformation, and the startup now has to seek out different third-party compute suppliers to run a number of of Anthropic’s hottest AI fashions on its platform.

“We've been very clear to Anthropic that this isn't our need – we wished to pay them for the total capability,” stated Mohan on X. “We're disillusioned by this choice and quick discover.”

In a weblog publish, Windsurf stated it has some capability with third-party inference suppliers, however not sufficient, so this transformation could create short-term availability points for Windsurf customers making an attempt to entry Claude.

With lower than 5 days of discover, Anthropic determined to chop off almost all of our first-party capability to all Claude 3.x fashions. Given the quick discover, we might even see some short-term Claude 3.x mannequin availability points as we've got in a short time ramped up capability on different inference…

— Varun Mohan (@_mohansolo) June 3, 2025

The choice comes just some weeks after Anthropic appeared to cross over Windsurf throughout the launch of Claude 4, the corporate’s new household of fashions, which provide 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 compelled the corporate to depend on a workaround that’s costlier and sophisticated for builders to entry Claude 4. In the meantime, different standard 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 current 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 permit us to successfully serve the broader developer neighborhood,” stated Anthropic spokesperson Steve Mnich in an electronic mail to TechCrunch on Tuesday, noting that it’s nonetheless potential to entry Claude 4 on Windsurf through an API key. “Builders may entry Claude via our direct API integration, our associate 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 standard AI coding instruments resembling 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 have been pissed off by the shortage of direct entry to Anthropic’s greatest AI coding fashions.

Ronald Mannak, a startup founder that makes a speciality of Apple’s programming language, Swift, advised TechCrunch that Claude 4 represented a big leap in capabilities for his workloads. Whereas Mannak has been a Windsurf buyer since late 2024, he’s switched to utilizing Cursor in current weeks in order that he can vibe code extra simply with Claude 4.

As a short-term resolution to assist 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” resolution is costlier and sophisticated than if Windsurf supplied the fashions itself.

In terms 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 assist 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 more difficult.