Cursor (Code Editor)

Cursor is an artificial intelligence code editor and coding agent developed by the American software company Anysphere, Inc. Founded in 2022 and based in San Francisco, Anysphere builds tools that allow developers to write, edit and refactor code, search across a codebase, run commands and complete programming tasks using natural-language instructions. Cursor is built on a fork of Microsoft's open-source Visual Studio Code editor, so it retains a familiar interface and extension ecosystem while adding deep AI integration.

Capabilities

Cursor combines the features of a traditional code editor with an AI assistant that has awareness of the entire project. Developers can describe a change in plain language and have the editor generate or modify code across multiple files, ask questions about how a codebase works, and accept inline suggestions as they type. A chat interface lets the user converse with the model about the project, while an agent mode can carry out multi-step tasks such as implementing a feature, running tests and fixing the resulting errors with limited human intervention.

Underlying these features is semantic indexing of the codebase, which lets the AI retrieve relevant files and context rather than working from a single open file. The editor can connect to a range of underlying language models, including frontier models from major providers, and Anysphere has also trained its own models tuned for coding.

Recent developments

Through 2025 Cursor added several notable capabilities. In October 2025 the company released Composer, its first in-house agentic coding model, described as a low-latency model trained for use inside Cursor with tools including codebase-wide semantic search. Cursor also introduced a built-in browser that lets the AI test web applications, inspect user-interface elements, read console logs and fix front-end errors during a session. A feature called Bugbot integrates with source control to watch code changes and flag potential regressions, and Agent Skills allow developers to define reusable procedures and domain rules that agents follow.

Business and reception

Cursor has grown rapidly. By late 2025 Anysphere had raised large funding rounds that valued the company in the tens of billions of dollars, and it reported annual recurring revenue reaching several hundred million dollars with tens of thousands of enterprise customers. This growth reflects a broader shift in software development toward AI-assisted and, increasingly, agent-driven coding, a style sometimes informally called vibe coding, in which developers specify intent and let the AI produce and iterate on the implementation.

The tool is not without criticism. Some developers report that a rapidly changing interface, occasional bugs and unpredictable AI edits can disrupt established workflows, and the reliance on cloud models raises questions about cost, privacy and control over proprietary source code. Nonetheless, Cursor has become one of the most widely adopted AI development environments and a reference point for how AI is reshaping programming.

References

1. Wikipedia contributors. (2025). Cursor (code editor). en.wikipedia.org.
2. Anysphere. (2025). Cursor: AI coding agent. cursor.com.
3. Contrary Research. (2025). Cursor Business Breakdown and Founding Story. research.contrary.com.