Anthropic cuts Claude subscribers off from OpenClaw in cost crackdown

In short: Anthropic has blocked Claude Pro and Max subscribers from using their flat-rate plans with third-party AI agent frameworks, starting with OpenClaw. The move, which took effect on 4 April 2026, shifts the cost of running autonomous agents onto users through a pay-as-you-go billing tier. The creator of OpenClaw, who joined OpenAI in February, called the decision a betrayal of open-source developers. Thousands of users now face cost increases of up to 50 times their previous monthly outlay.

Anthropic has ended a quiet subsidy that made its Claude models the engine of choice for the open-source AI agent community. Starting on 4 April 2026, users of Claude’s Pro and Max subscription tiers can no longer pipe their plan’s usage limits through third-party frameworks such as OpenClaw. If they want to keep using those tools with Claude, they must pay separately under a new “extra usage” billing system ...