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Wind Surf, the AI coding startup reportedly in acquisition talks with OpenAI, has revealed that Anthropic significantly reduced its direct access to Claude AI models. The company now faces challenges in providing seamless access to Anthropic’s latest AI technology for its users.

Sudden Access Reduction for Key AI Models

Wind Surf CEO Varun Mohan announced via social media that Anthropic abruptly limited access to Claude 3.7 Sonnet and Claude 3.5 Sonnet models. The company received minimal notice about this change, forcing it to scramble for alternative solutions.

“We wanted to pay for full capacity and made this clear to Anthropic,” Mohan stated. “The short notice and limited access create operational challenges for our platform.”

Impact on Claude 4 Integration

The access restrictions come weeks after Anthropic launched its Claude 4 model family, which offers industry-leading performance for software engineering tasks. Unlike competitors such as Cursor and GitHub Copilot, Wind Surf didn’t receive direct access to Claude 4 at launch.

This forced Wind Surf to implement a workaround solution that requires developers to use their own Anthropic API keys – a more expensive and complex approach than direct integration.

Growing Tensions in AI Coding Space

The situation highlights increasing competition in the AI-assisted coding sector. While Anthropic has expanded its own coding tools with Claude Code and developer conferences, Wind Surf has grown rapidly – reaching $100 million in annual recurring revenue by April.

Anthropic spokesperson Steve Mnich stated the company prioritizes “sustainable partnerships” for serving the broader developer community, noting that Claude 4 remains accessible through API keys and other channels.

User Frustration and Platform Impact

Several Wind Surf users expressed dissatisfaction with the limited access to Anthropic’s latest models. Some developers, like Swift specialist Ronald Mannak, have switched to competing platforms to gain better Claude 4 integration.

Wind Surf maintains its commitment to providing user choice, but the current situation with Anthropic’s access restrictions presents significant challenges for the fast-growing startup in the competitive AI coding market.

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