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Comparison

Junie by JetBrains vs OpenAI Codex

	Junie by JetBrains	OpenAI Codex
What it says it does	Junie by JetBrainsJunie is the AI coding agent from JetBrains. It runs in JetBrains IDEs, a CLI, GitHub Actions and GitLab, and works with any model through bring-your-own-key.	OpenAI CodexOpenAI's coding agent. Codex works in a desktop app, on the web, in a CLI, in IDE extensions and on iOS, can run tasks in cloud sandboxes, and reviews GitHub pull requests.
Pricing	Junie by JetBrainsJunie Lite is a free AI layer (no trial, no card); JetBrains AI Pro $8.33/user/mo (10 AI credits per 30 days) and AI Ultimate $25/user/mo (35 AI credits, recommended for regular Junie use), as listed on the Junie site; top-ups available (official)	OpenAI CodexIncluded with ChatGPT plans: Free $0 and Go $8/mo (desktop app, lighter model); Plus $20/mo (web, CLI, IDE, cloud code review); Pro $100, $200 or $500/mo; Business $25/user/mo billed monthly; or pay API rates with an API key (official)
Website	Junie by JetBrainshttps://junie.jetbrains.com/	OpenAI Codexhttps://chatgpt.com/codex/

Which tool for which job

Junie by JetBrains wins when you live in a JetBrains IDE and want an AI agent there rather than a separate editor.

OpenAI Codex wins when you want one subscription that covers chat and a coding agent across terminal, IDE and cloud.

Descriptions in the table come from each vendor's own site. This verdict is a fit call from those official pages as of 23 October 2026, not a shared benchmark or a hands-on score. Prices change, so confirm the pricing row on each tool page. How we review tools.

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