OpenAI Codex (VS Code)

At a glance

What OpenAI Codex (VS Code) does

In-editor agent, Multi-file edits, Chat, Voice mode, Cloud sandbox tasks, MCP, Long-running tasks

Best for

OpenAI-first IDE agent powered by GPT-5.1 Codex with deep VS Code integration

Works well with

Conflicts & caveats

• Replit has its own built-in AI Agent — external integrations like OpenAI Codex (VS Code) cannot run inside the Replit web IDE.
• OpenAI Codex (VS Code) does not officially support Xcode. Use GitHub Copilot for Xcode or Direct API.
• OpenAI Codex (VS Code) has limited or no official Android Studio support. Use GitHub Copilot or JetBrains AI Assistant.
• Void Editor is BYO-API-key first — OpenAI Codex (VS Code) runs as an extension on top, which can work but isn't the intended Void workflow.
• Lapce has a small plugin ecosystem; OpenAI Codex (VS Code) may not have an official plugin yet.
• OpenAI Codex (VS Code) does not officially support RStudio — use direct API calls or the rstudio.cloud Copilot integration.
• OpenAI Codex (VS Code) does not officially support Spyder — use the direct API.
• Cursor Mobile only runs Cursor-managed agents and background tasks — local-only integrations like OpenAI Codex (VS Code) cannot run on the phone.
• OpenAI Codex (VS Code) does not officially support Eclipse — Copilot, Tabnine, and Codeium are the main supported options.
• OpenAI Codex (VS Code) does not officially support Apache NetBeans — Copilot and Tabnine are the main supported options.
• OpenAI Codex (VS Code) is tied to OpenAI's GPT-5.1 Codex family — Claude Sonnet 4.6 is not selectable inside this integration.
• @codebase (Cursor) only works with Cursor built-in integration (yours is OpenAI Codex (VS Code)).
• Continue's codebase indexing only works when the integration is Continue.dev (yours is OpenAI Codex (VS Code)).
• Windsurf codebase indexing only works with Windsurf Cascade integration (yours is OpenAI Codex (VS Code)).
• Aider architect mode requires the Aider integration (yours is OpenAI Codex (VS Code)).