Why Cursor 3 Makes Traditional IDEs Like VS Code Obsolete

What Cursor 3 Brings

Cursor 3 substitutes the traditional code editor with an AI‑agent management console, signalling a major transformation in AI‑assisted development tools and developer workflows.

Background and Design

Originally forked from VS Code in 2022, Cursor has evolved into a completely rebuilt product (code‑named Glass ) that places the agent console as the primary interface, relegating the IDE to a secondary view. The file‑tree pane is replaced by a prompt‑input box, and the workspace now supports multiple repositories with agents displayed in a unified sidebar across desktop, web, Slack, GitHub, and Linear.

Transformation Driven by Pressure

Cursor’s release follows intense market pressure: a Fortune article described the company as a classic “innovator’s dilemma” case, while Bloomberg reported that its annual revenue surpassed $2 billion in February 2026, doubling in three months. In response, Cursor launched three major initiatives:

Automations (March 5) – triggers agents from GitHub events, Slack messages, or timers without human intervention.

Composer 2 (March 19) – the first model built on the open‑source Kimi K2.5, scoring 61.3 on CursorBench versus Claude Opus 4.6, with lower token costs.

Self‑hosted cloud agents – allowing Fortune‑500 firms to run agents on internal infrastructure.

Composer 2 is priced at $0.50 per million input tokens and $2.50 per million output tokens (as of March 2026), considerably cheaper than Anthropic or OpenAI’s leading models.

Structural Shift in the Industry

All major AI‑assisted development players now agree that agents need a dedicated orchestration interface, but they differ on its placement:

Anthropic’s Claude Code adopts a terminal‑first approach, treating the CLI as the orchestration layer.

OpenAI offers a desktop app, CLI, VS Code extensions, and a cloud UI, aiming for an omnipresent orchestration layer.

Google’s Antigravity provides both an IDE view and a separate manager view, giving equal weight to each.

Cursor (and Google) make the agent console the default view, with the IDE as an optional pane, reflecting a belief that developers will spend most of their time scheduling agents, reviewing output, and deciding what to push to the cloud.

What This Means for Developers

The shift manifests in three concrete ways:

Model selection becomes an infrastructure decision; Cursor sets Composer 2 as the default but allows switching to Claude, GPT‑5.4, or Gemini.

The perceived moat of VS Code is eroding; Cursor’s fork inherits the extension ecosystem but now differentiates through agent‑centric design, potentially reducing the importance of IDE extensions.

Workflows change, leading to role transformation; engineers will spend significant time reviewing agent‑generated diffs, validating cloud screenshots, and managing PRs, moving the skill set toward platform‑ops rather than pure coding.

Cursor’s acquisition of the code‑review platform Graphite in December 2025 underscores this trend: AI writes code, Graphite reviews it, and engineers coordinate the two, relegating the IDE to a secondary role.

Future Outlook

The orchestration layer is emerging as a new product category, but the industry has not yet agreed on its placement—inside the IDE, outside it, or both. Anthropic and OpenAI bet on independent tools, while Cursor and Google embed orchestration within an integrated console. Whoever aligns with the prevailing architecture will likely dominate the next decade, much as cloud control planes decided the fate of infrastructure giants forty years ago.

If this assessment holds, Cursor 3 may represent one of the last traditional code editors before the paradigm fully shifts to agent‑centric development.