Anthropic adds usage fees to Claude Fable 5, breaking subscription model

Anthropic is upending its subscription pricing for Claude by adding usage-based fees for its latest consumer model, Claude Fable 5 (the consumer version of Mythos 5). Starting July 12 at 11:59 PM PT, subscribers on the $20, $100, and $200 monthly plans will need to pay extra per token beyond their subscription. The rates are $10 per million input tokens and $50 per million output tokens—the same as the developer API. For example, a user sending and receiving a million tokens in a month would owe an additional $60, making the total $80 for that month. This is the first time a frontier AI lab has applied usage-based billing to a consumer-facing model, moving away from the traditional flat-fee subscription model.

Anthropic frames this as a temporary measure due to high demand and computational constraints, promising to return Fable 5 to subscription plans when capacity allows. The move follows similar shifts by AI coding startups like Cursor and Anthropic's own enterprise billing changes. With Claude's monthly unique visitors doubling to 245 million (still far behind ChatGPT's 1.11 billion), this is a test of consumer willingness to pay variable costs. The change could signal an industry-wide trend where powerful AI models are metered like utilities, especially as agents consume more tokens in hidden chain-of-thought processes.