OpenAI says Codex now works in the app, IDE, terminal, web, GitHub, iOS, and Slack.
Recent upgrades bundled a new GPT-5.3-Codex model for agentic coding, a rebuilt CLI, an IDE extension for VS Code-compatible editors, faster cloud task performance via container caching, automated code review, an in-app browser for rendered pages, and computer use for macOS apps.
April 2026 added three more shifts: a token-based credit billing model, a new $100 Pro tier with up to 10x Plus usage, and a research preview of GPT-5.3-Codex-Spark - a smaller, real-time coding model that targets more than 1,000 tokens per second.
Together these push Codex toward general digital work rather than pure code output. You can read a more in-depth review here.
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