Anthropic announced a significant policy change effective April 4th that will prevent users from accessing Claude through third-party applications like OpenClaw, forcing subscribers to pay additional fees if they want to continue using these alternative interfaces. The move represents a deliberate shift toward controlling how users interact with Claude and monetizing access across different platforms. This decision comes as Anthropic competes fiercely with OpenAI and other AI providers in a rapidly consolidating market where maintaining direct user relationships has become strategically crucial.