Anthropic is pulling the plug on free access to its Claude large‑language model for third‑party applications. As of 3 p.m. Eastern Time on April 4, anyone who runs Claude through an external tool—most notably the open‑source assistant OpenClaw—must either buy a usage bundle or supply a Claude API key. The shift was announced on X by Boris Cherny, the company’s founder and head of Claude Code.

"We’ve been working hard to meet the increase in demand for Claude, and our subscriptions weren't built for the usage patterns of these third‑party tools," Cherny wrote. "Capacity is a resource we manage thoughtfully and we are prioritizing our customers using our products and API." The statement underscores Anthropic’s focus on managing server load and ensuring that paying customers receive reliable performance.

OpenClaw, developed by the same team behind Moltbook, uses Claude alongside other models such as OpenAI’s ChatGPT and Google’s Gemini to automate personal workflows—sorting inboxes, drafting emails, and managing calendars. While the assistant’s core functions are straightforward, its reliance on external LLMs drives significant compute demand. Anthropic’s decision means that the free tier that many hobbyists and small teams depended on is gone.

Users who wish to keep Claude as their backend now face two options. Anthropic offers discounted usage bundles that can be attached to an account, providing a pay‑as‑you‑go model for the extra compute. Alternatively, developers can switch to a different LLM integration, with popular choices including xAI, Perplexity and DeepSeek. Anthropic also promotes Claude Cowork, an in‑house alternative that tackles similar productivity tasks without the need for third‑party wrappers.

The change could ripple through the growing ecosystem of AI‑powered personal assistants. OpenClaw’s open‑source nature means that many users may simply fork the project and embed a new API key, but smaller developers without the budget for usage bundles might migrate to competing models. Industry observers note that Anthropic’s move reflects a broader trend: AI providers tightening access as demand outpaces infrastructure, especially for high‑volume, low‑margin use cases.

For now, Anthropic says the new policy is about “engineering constraints and optimization.” The company did not disclose how many third‑party integrations are affected or how much additional revenue the shift is expected to generate. It remains to be seen whether the pricing model will deter new developers from building on Claude or push them toward more permissive alternatives.

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