OpenAI Codex vs JetBrains AI
OpenAI Codex: OpenAI's coding agent that writes, reviews and fixes code in the cloud or terminal. JetBrains AI: AI Assistant and the Junie agent built into IntelliJ, PyCharm and other JetBrains IDEs. Here is how they compare on features, pricing, platforms, pros and cons.
Quick verdict
OpenAI Codex
Best for: Developers who want to hand off whole coding tasks.
Stands out for: Works across cloud, terminal and editor; Strong at multi-step tasks.
JetBrains AI
Best for: Developers who already work in JetBrains IDEs.
Stands out for: Deep IDE integration; Understands project structure well.
Side-by-side comparison
| Visit openai.com (opens in a new tab) | Visit jetbrains.com (opens in a new tab) | |
|---|---|---|
| What it is | OpenAI's coding agent that writes, reviews and fixes code in the cloud or terminal. | AI Assistant and the Junie agent built into IntelliJ, PyCharm and other JetBrains IDEs. |
| Pricing | PaidIncluded with paid ChatGPT plans | Free + Paid |
| Free to use | No | Yes |
| Category | AI Coding | AI Coding |
| Editor rank | #11 in category | #17 in category |
| Made by | OpenAI | JetBrains |
| Best for | Developers who want to hand off whole coding tasks. | Developers who already work in JetBrains IDEs. |
| Key features |
|
|
| Pros |
|
|
| Cons |
|
|
| Use it to |
|
|
| Web app | ||
| Windows | ||
| Mac | ||
| Linux | ||
| VS Code |
OpenAI Codex vs JetBrains AI: questions
Is OpenAI Codex better than JetBrains AI?
Neither wins for everyone. Our editors rank OpenAI Codex slightly higher overall in AI Coding, but JetBrains AI can be the better fit: Developers who already work in JetBrains IDEs.
Which is free, OpenAI Codex or JetBrains AI?
JetBrains AI can be used for free (free + paid), while OpenAI Codex is paid.
Can I use OpenAI Codex and JetBrains AI together?
Yes. Many people keep both and pick per task, for example ask the agent to fix a bug and open a pull request with OpenAI Codex, and refactor a class with AI help with JetBrains AI.