"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."
"A single OpenClaw instance running autonomously for a full day can consume the equivalent of $1,000 to $5,000 in API costs, depending on the task load."
"Anthropic's subscriptions weren't built for the usage patterns of these third-party tools, leading to an unsustainable transfer of compute costs from the user to Anthropic."
Starting April 4, 2026, Anthropic has blocked Claude Pro and Max subscribers from using their flat-rate plans with third-party AI frameworks like OpenClaw. Users now face cost increases of up to 50 times their previous monthly fees due to a new pay-as-you-go billing system. This change ends a subsidy that made Claude models popular among open-source developers. The shift is driven by the unsustainable cost of running autonomous agents under existing subscription models, which were designed for conversational use rather than agentic frameworks.
Read at TNW | Anthropic
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