OpenAI Codex vs JetBrains Junie

OCOpenAI Codex8.9Visit JetBrains Junie8.8Visit

Higher score OC OpenAI Codex #5 in AI Coding Assistants 8.9/10 Paid ✓ 4 of 5 features Visit OpenAI Codex

vs

JetBrains Junie #6 in AI Coding Assistants 8.8/10 Free plan · 30-day trial Free planFree trial✓ 4 of 5 features Try JetBrains Junie

• OpenAI Codex fits best

  Teams delegating complete engineering tasks

• JetBrains Junie fits best

  JetBrains users needing autonomous coding

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Side by side

Feature	OCOpenAI Codex 8.9/10 Visit ↗	JetBrains Junie 8.8/10 Visit ↗
At a glance
Editor score	8.9	8.8
Ranking	#5 in AI Coding Assistants	#6 in AI Coding Assistants
Best for	Teams delegating complete engineering tasks	JetBrains users needing autonomous coding
Pricing model	Paid	Free plan + paid
Starting price	—	$8.33/user/mo
Free plan	—	✓ (best)
Free trial	—	30 days
Deployment	Cloud, Desktop	Cloud, Desktop
Platforms	Web, Windows, macOS, Linux	Web, Windows, macOS, Linux
Support	Docs · 24/7	Community, Docs
Compliance	SOC 2, SSO/SAML, 2FA	SOC 2
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features OpenAI Codex 4/5 · JetBrains Junie 4/5
Code completion	Not checked yet	Not checked yet
Chat assistance	✓	✓
Coding agent	✓	✓
Codebase indexing	✓	✓
Terminal access	✓	✓
Specs
Supported IDEs	Visual Studio Code; Cursor; Windsurf; Visual Studio Code Insiders; Xcode; JetBrains IDEs	IntelliJ IDEA Ultimate, PyCharm Pro, WebStorm, GoLand, IntelliJ IDEA Community, PhpStorm, RubyMine, RustRover, CLion, Rider, Android Studio
Our review
Pros	Handles features, refactors, migrations, reviews, and code changes Supports terminal use, cloud delegation, and parallel worktrees Works with VS Code, Cursor, Windsurf, Xcode, and JetBrains IDEs	Plans support autonomous coding, terminal execution, testing, and verification. Works with JetBrains IDEs, Android Studio, GitHub, GitLab, and CI/CD workflows. Supports BYOK, custom endpoints, locally running models, and persistent guidelines.
Cons	No free plan Paid access is offered through ChatGPT plans and related surfaces IDE coverage is centered on the listed integrations	The strongest fit is concentrated around JetBrains IDEs and Android Studio. The Free to Start plan includes 5 AI credits. More frequent coding-agent use is positioned for the $25 AI Ultimate plan.
Our verdict	OpenAI Codex is an AI coding agent for software developers and engineering teams. It works through ChatGPT, supported IDEs, and the terminal, helping with complete engineering tasks such as building features, refactoring code, migrating… Read the review →	JetBrains Junie is an AI coding agent for developers who want assistance beyond chat-based code suggestions. It can analyze codebases, plan and execute multi-step tasks, edit files, run terminal commands, execute tests, verify changes, and… Read the review →

Strengths and trade-offs

• OpenAI Codex — where it wins

  • Handles features, refactors, migrations, reviews, and code changes
  • Supports terminal use, cloud delegation, and parallel worktrees
  • Works with VS Code, Cursor, Windsurf, Xcode, and JetBrains IDEs

  Where it doesn't

  • No free plan
  • Paid access is offered through ChatGPT plans and related surfaces
  • IDE coverage is centered on the listed integrations

• JetBrains Junie — where it wins

  • Plans support autonomous coding, terminal execution, testing, and verification.
  • Works with JetBrains IDEs, Android Studio, GitHub, GitLab, and CI/CD workflows.
  • Supports BYOK, custom endpoints, locally running models, and persistent guidelines.

  Where it doesn't

  • The strongest fit is concentrated around JetBrains IDEs and Android Studio.
  • The Free to Start plan includes 5 AI credits.
  • More frequent coding-agent use is positioned for the $25 AI Ultimate plan.

• OCOpenAI Codex8.9/10 · Paid

  A task-oriented coding agent for teams handling features, refactors, and migrations.

  Visit OpenAI CodexFull verdict →
• JetBrains Junie8.8/10 · Free plan · 30-day trial

  A capable autonomous coding agent for developers already working in the JetBrains ecosystem.

  Try JetBrains JunieFull verdict →