OpenAI Codex has been seamlessly integrated into JetBrains IDEs with the release of version 2025.3, bringing cutting-edge AI capabilities to popular development environments like IntelliJ, PyCharm, WebStorm, and Rider. This integration leverages the advanced GPT-5.2-Codex model to enhance the developer experience by enabling functionalities such as planning, writing, testing, reviewing, and deploying code within the editor itself.
Users can easily access Codex by authenticating through a JetBrains AI subscription, a ChatGPT account, or using an OpenAI API key. Codex offers adjustable autonomy levels and reasoning budgets to handle complex programming tasks, including extensive code refactoring, code migrations, and detecting security vulnerabilities.
For a limited time, JetBrains is providing free access to this powerful AI tool via their AI service until promotional credits are exhausted. The integration also allows for model switching within the AI chat interface of the IDEs, offering developers flexibility and control over how they leverage AI in their coding workflows.
This integration marks a significant step forward in AI-assisted development, ensuring that developers can streamline their coding processes and focus on creating robust, efficient software solutions.

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OpenAI Codex is now integrated into JetBrains IDEs (IntelliJ, PyCharm, WebStorm, Rider) via version 2025.3, powered by GPT-5.2-Codex. The integration enables AI-assisted code planning, writing, testing, reviewing, and deployment directly in the editor. Developers can authenticate using JetBrains AI subscription, ChatGPT account, or OpenAI API key, with adjustable autonomy levels for tasks like refactoring, migrations, and security vulnerability detection. JetBrains offers temporary free access through promotional credits.

OpenAI Codex Now Integrated Into JetBrains IDEs