Anthropic expands Models API with model capability fields

AI Impact Summary

Anthropic has expanded the Models API to include detailed model capabilities, exposing `max_input_tokens`, `max_tokens`, and a `capabilities` object. This allows developers to programmatically discover the supported features of each Claude model, such as context window size and specific functionalities. This change is crucial for building applications that can intelligently select the appropriate Claude model based on their requirements and for optimizing performance by leveraging model-specific capabilities.