Cursor

Cursor is an agent-centric code editor that puts autocomplete, targeted rewrites and repository-wide changes in one interface. Users can let the built-in model predict the next edit, or hand a task to an agent that reads the repository, edits multiple files, runs commands and tests.

The editor keeps a continuously updated codebase index, agents work in parallel in isolated working copies, and jobs exceeding a local time limit continue in the cloud. Models include the in-house Composer series plus several external providers, allocated by task complexity. Agents read terminal output and debug information, revise code against errors, and present changes as diffs accepted or reverted line by line. Indexing spans repositories, and shared rule files keep behaviour consistent across a team. The third version, released on 2 April 2026, turned the agent panel into a separate window where multiple agents pursue different changes at once.