OpenAI's Codex Becomes a Superapp — GPT-5.2, Computer Use, Browser, and Image Gen in One
OpenAI shipped a major Codex update on April 16, upgrading the underlying model to GPT-5.2-Codex and adding background computer use, an in-app browser (Atlas), image generation via gpt-image-1.5, and 111 new plugins — pivoting the app from a coding assistant into a full AI superapp.
Original sourceOpenAI's Codex started 2026 as a focused coding assistant competing with Claude Code and GitHub Copilot. By April 17, it had become something harder to categorize.
The April 16 update — the largest single Codex release since launch — upgraded the core model to GPT-5.2-Codex and added four capabilities that collectively change the product's identity: background computer use that can click and type in any macOS application; an in-app Atlas browser for web research and form filling; image generation via gpt-image-1.5 without leaving the app; and 111 new third-party plugins covering everything from Figma to Linear to Notion.
The computer-use feature is the most significant. Where previous versions of Codex stayed inside the editor, GPT-5.2-Codex can now manipulate any app on your Mac — logging into dashboards, pulling data from Excel files, submitting forms, and transferring context between applications. OpenAI is framing this as "agents that work alongside you in your actual workflow," not just in a sandbox.
The move puts OpenAI in direct competition with Anthropic's Claude (via computer use), with Perplexity (via the Atlas browser), and with Runway and Midjourney (via image generation) — all from a single desktop client. Industry observers on Hacker News called it the most significant pivot by a major AI lab since Google's Gemini rebranding.
The update is included with all ChatGPT paid plans. No additional cost for the new features.
Panel Takes
The Builder
Developer Perspective
“GPT-5.2-Codex running computer use on my actual machine with 111 plugins is a legitimately different product than the Codex I was using last month. The plugin ecosystem is where this gets interesting — if those integrations hold up in production, this is the Swiss Army knife I've been waiting for.”
The Skeptic
Reality Check
“Everything-apps tend to do nothing particularly well. Codex started as a focused coding tool — now it's competing with Perplexity, Runway, and Claude simultaneously. Spreading the surface area this wide usually means the core coding experience suffers while the new features are half-baked.”
The Futurist
Big Picture
“This is OpenAI's bet that the desktop AI client becomes the new operating system — the layer through which all other software is accessed. If that framing is right, the race to own that layer is the most important platform war of the decade.”