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v0 by Vercel

Vercel's AI agent for building full-stack apps

v0 is an AI agent that turns plain-language descriptions, mockups or screenshots into production-ready code, including full-stack apps and agents. It previews the result in real time, detects and fixes its own errors, uses web search and external tools, and can deploy to Vercel or open a pull request.

Visit v0.app

In research (1)

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Devin, the AI software engineer, and the Windsurf IDE.

Cognition builds Devin, an autonomous AI software engineer that plans and executes engineering tasks end-to-end, and acquired the Windsurf agentic IDE in 2025. One of the defining startups of the coding-agent wave.

~$10.2B valuation (Sep 2025)

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The AI-native code editor where agent mode lives.

Cursor rebuilt the IDE around models: tab completion, in-editor chat and agent mode that plans multi-file edits and runs commands. Its rise set the pace for the entire coding-agent market.

~$29B valuation (late 2025)

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Droids: AI workers for software teams.

Factory's 'droids' take engineering tickets from issue to pull request, with sandboxed environments and enterprise controls — agents as members of the dev workflow.

4 pros · 4 cons

Sources

  1. v0 website