With the introduction of Claude 4 models, Claude Code has become better at following instructions and executing tasks accurately on the first attempt, enhancing the coding experience.

The introduction of the 3.5 Sonnet model marked a significant improvement in programming capabilities, enabling Cursor to enhance its features and user experience.

By combining the intelligence of the 3.5 Sonnet model with custom retrieval models, Cursor can now perform multi-file edits, which has driven mass adoption of the platform.

When we started using Claude Sonnet 3.5, we were impressed by its capabilities.

In October, Anthropic released upgraded models including Claude 3.5 and introduced the innovative feature of computer use, positioning itself as a leader in the rapidly growing AI agent landscape.

The progression of AI models has allowed Cursor to continuously improve its features, enabling more effective coding and problem-solving.

Every significant feature in Cursor now involves a custom model, which was a surprising and counterintuitive development for us, and Cursor's autocomplete experience predicts the next actions across multiple files and locations within a codebase, requiring models to be fast and specialized in understanding code diffs.

The model's vision of how people would program finally became effective, leading to competition with Cursor.

Future developments for Claude Code include improving its integration with various tools and enhancing its ability to handle simple tasks through chat applications.