The Claude 3.5 Sonnet model has recently been closed to free users, offering only the simplified Claude 3 Haiku model. This change has drawn user attention, especially from those relying on its advanced features for complex task handling and visual reasoning. Launched in June of this year, Claude 3.5 Sonnet is a new AI model that has set industry standards with its exceptional performance, enhanced comprehension, accelerated execution, and groundbreaking visual processing capabilities. The closure affects user experience, impacting some users.