The company said that while it’s starting with OpenClaw today, the policy “applies to all third-party harnesses and will be rolled out to more shortly.”

Anthropic’s head of Claude Code Boris Cherny wrote on X that the company’s “subscriptions weren’t built for the usage patterns of these third-party tools” and that Anthropic is now trying “to be intentional in managing our growth to continue to serve our customers sustainably long-term.”

The announcement comes after OpenClaw creator Peter Steinberger said he was joining Anthropic rival OpenAI, with OpenClaw continuing as an open source project with support from OpenAI.

Steinberger posted that he and OpenClaw board member Dave Morin “tried to talk sense into Anthropic” but were only able to delay the increased pricing by a week.