Cursor 3 Launches Agent-First Coding Experience to Compete With Claude Code and Codex
Cursor has announced Cursor 3, a major product overhaul under the codename "Glass" that shifts from AI-assisted coding to an "agent-first" paradigm, directly competing with Anthropic's Claude Code and OpenAI's Codex.
The Paradigm Shift
"In the last few months, our profession has completely changed," said Jonas Nelle, one of Cursor's heads of engineering. "A lot of the product that got Cursor here is not as important going forward anymore."
The new product is optimized for a world where developers spend their days "conversing with different agents, checking in on them, and seeing the work that they did" — rather than writing code themselves.
Key Features
- Agent-first interface: A text box at the center of a new window where users type natural language tasks. The AI agent completes work without requiring the developer to write a single line of code.
- Multi-agent management: A sidebar lets developers view and manage all running AI agents simultaneously.
- Cloud + local integration: Users can prompt an agent in the cloud to build a feature, then review the generated code locally on their machine.
- Integrated with existing IDE: The agent experience lives alongside Cursor's AI-powered development environment rather than replacing it.
The Competitive Landscape
Cursor pioneered one of the first and most popular ways for developers to code with AI — making it one of the biggest AI customers for OpenAI, Anthropic, and Google. But in the last 18 months:
- Anthropic launched Claude Code: An agentic coding tool that's gained massive adoption
- OpenAI launched Codex: With highly subsidized subscriptions putting pressure on Cursor's business model
- Both tools are offered by the AI labs themselves, potentially undercutting Cursor's pricing
Cursor's Unique Position
What differentiates Cursor 3 from standalone Claude Code and Codex desktop apps is the integration of agent-first capabilities with Cursor's established AI-powered development environment. The company argues it doesn't matter which interface developers spend time in — they just want people using Cursor.
Why It Matters
Cursor 3 represents the broader industry shift from "AI as autocomplete" to "AI as autonomous developer." As agentic coding tools mature, the question becomes: do developers need a specialized IDE at all, or will the agent become the interface? Cursor is betting that the IDE + agent combination provides the best of both worlds.