OpenAI Codex — AI Tool Review, Features & Pricing

OpenAI Codex: OpenAI's cloud-based AI software engineering agent, now with GPT-5.5 support and 1M token context window. Runs multiple tasks in parallel in isolated sandbox environments with your repository preloaded. Features CLI, macOS desktop app, IDE extensions (VS Code, Cursor, Windsurf), web interface, and Slack integration. GPT-5.5 brings Terminal-Bench 2.0 score of 82.7% and SWE-Bench Pro 58.6%.

About OpenAI Codex

OpenAI's cloud-based AI software engineering agent, now with GPT-5.5 support and 1M token context window. Runs multiple tasks in parallel in isolated sandbox environments with your repository preloaded. Features CLI, macOS desktop app, IDE extensions (VS Code, Cursor, Windsurf), web interface, and Slack integration. GPT-5.5 brings Terminal-Bench 2.0 score of 82.7% and SWE-Bench Pro 58.6%.

It belongs to the development category (subcategory: ai-coding) within the AI Workflows tool directory.

OpenAI Codex offers a freemium model with a free tier and paid upgrades.

Pricing & Plans

  • Pricing model: Freemium
  • Plan details: Limited-time free access for ChatGPT Free and Go users. Included with Plus ($20/month) and Pro ($200/month) plans. Business, Enterprise, and Edu plans also include Codex. Each task runs in isolated cloud sandbox.

Available Models in OpenAI Codex

  • GPT-5.5
  • GPT-5.4
  • GPT-5.3-Codex
  • GPT-5.2-Codex

Tags & Keywords

coding, autonomous, cloud-agent, sandbox, pull-requests, multi-agent, cli, macos-app, ide-extension, agentic

How to access OpenAI Codex

Visit the official OpenAI Codex website: https://openai.com/codex/.

Find more AI tools like OpenAI Codex on our AI Tools Directory, explore complete AI Workflows that combine multiple tools, or read in-depth reviews on our AI Blog.

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