Anthropic says Claude Code subscribers will need to pay extra for OpenClaw usage

Anthropic has announced that subscribers to its Claude Code service will incur additional charges for using the AI coding assistant with third-party tools, including OpenClaw. This policy, effective April 4, 2026, at noon Pacific, means that subscribers can no longer utilize their existing Claude Code subscription limits when integrating with these external harnesses. Instead, they will be required to pay for such usage via a separate pay-as-you-go billing option. While OpenClaw is the initial focus, Anthropic stated that this policy extends to all third-party harnesses and will be implemented more broadly soon.

Boris Cherny, Anthropic's head of Claude Code, explained the decision on X, stating that the company's subscriptions were not designed for the usage patterns exhibited by these third-party tools. He framed the move as an effort to "be intentional in managing our growth to continue to serve our customers sustainably long-term," attributing it to "engineering constraints." Anthropic is offering full refunds to subscribers, acknowledging that some may not have realized third-party tool support was not included in the standard subscription. Cherny also asserted that the Claude Code team supports open source, citing his own contributions to OpenClaw's prompt cache efficiency.

The announcement follows the news that Peter Steinberger, OpenClaw's creator, has joined Anthropic's competitor, OpenAI, with OpenClaw continuing as an open-source project under OpenAI's support. Steinberger, along with OpenClaw board member Dave Morin, reportedly attempted to negotiate with Anthropic, managing to delay the pricing change by one week. Steinberger criticized Anthropic's timing, suggesting a pattern of copying popular features into its proprietary harness before restricting open-source alternatives.

This development occurs as OpenAI reportedly shifts its focus towards software engineers and enterprises, evidenced by the shutdown of its Sora app and video generation models to reallocate computing resources. The competitive landscape between Anthropic and OpenAI appears to be intensifying, particularly in the domain of AI coding assistants and developer tools. The article itself is sourced from TechCrunch, with information regarding Anthropic's policy originating from a customer email shared on Hacker News and statements made on X by Anthropic's Boris Cherny and OpenClaw's Peter Steinberger.