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It's a split decision.
These tools are not direct substitutes: Copilot is an AI coding agent built into GitHub workflows, while IntelliJ IDEA is a Java and Kotlin IDE. Choose Copilot for issue-linked tasks, pull request reviews, and cross-surface agent sessions; Pro starts at $10 per user monthly. Choose IntelliJ for code-aware navigation and built-in run, debug, and test tools; its free core tier is available, and Ultimate starts at $16.58 monthly with annual billing. Both offer a free option.
01Side by side
| GitHub Copilot | IntelliJ IDEA | |
|---|---|---|
| Starting price | Free; Pro starts at $10/user/month | Free; Ultimate starts at $16.58/month annually |
| Free plan | 2,000 monthly completions; community support | Free core tier; AI Free has 3 credits per 30 days |
| Best for | GitHub-centered agent tasks and pull request work | Java and Kotlin development in an IDE |
| Core strength | Issue-linked sessions, agents, and code review | Code-aware navigation, suggestions, run, debug, and test tools |
| Learning curve | Not published | Not published |
| Integrations/data | Connects to issues, pull requests, and repository history | Supports many languages and frameworks out of the box |
| Team/seat costs | Business price not published; Enterprise requires sales contact | Organization Ultimate: $59.92/user/month annually |
| Support | Free tier has community support; paid support not published | Support details not published |
GitHub Copilot Choose GitHub Copilot if
- Choose GitHub Copilot for agent tasks tied to issues and pull requests.
- Choose GitHub Copilot if you want CLI, editor, web, and mobile continuity.
- Choose GitHub Copilot if 2,000 free monthly completions are enough.
IntelliJ IDEA Choose IntelliJ IDEA if
- Choose IntelliJ IDEA for Java or Kotlin development.
- Choose IntelliJ IDEA for built-in run, debug, and test tools.
- Choose IntelliJ IDEA if you want a free core IDE tier.
02Pricing compared
Copilot has the lower paid entry price: its pricing page lists a free plan with 2,000 completions per month and Pro at $10 per user per month. Pro includes $15 in monthly AI credits and a $5 monthly flex allotment. The page lists no annual discount. Higher Copilot tiers are $39 for Pro+ and $100 for Max per user monthly; Business pricing is not published there.
IntelliJ IDEA has a free Core edition, with seat and usage limits not published. Ultimate for individuals costs $19.90 monthly or $16.58 per month billed annually ($199 for the first year). Organization Ultimate costs $71.90 monthly or $59.92 per user per month billed annually. JetBrains lists a 30-day trial. These prices buy different things: Copilot is an AI coding tool; IntelliJ is an IDE.
03Features and depth
Copilot is built around AI-assisted work in GitHub workflows. Its listed features include opening sessions with issue, discussion, and repository context; delegating separate tasks to parallel sessions; and resuming work across the app, CLI, editor, github.com, and mobile. It can also run reusable tasks on demand, on a schedule, or from triggers, and review local changes and pull requests for quality and security issues. Model selection lets users choose a model or have Copilot balance quality, speed, and cost.
IntelliJ IDEA is the development environment itself, identified by JetBrains as an IDE for Java and Kotlin. JetBrains highlights code-aware navigation and suggestions, built-in tools to run, debug, and test applications, and support for a wide range of languages and frameworks out of the box. It is also configurable. Those feature sets are complementary, not interchangeable: Copilot adds agent workflows, while IntelliJ provides the workspace and development tools. The published IntelliJ pricing details list AI Free with three credits per 30 days in the free Core edition.
04Ease of use and learning curve
The easier fit depends on what you already use. Copilot’s sessions connect to GitHub issues, pull requests, and repository context, and its listed continuity across the editor, CLI, app, website, and mobile can suit teams that move between those surfaces. Its agent workflows also add choices about sessions, models, and usage credits.
IntelliJ puts navigation, suggestions, and run, debug, and test tools inside one IDE. JetBrains says supported languages and frameworks are available out of the box, though its broad feature set and customization options may require learning the IDE itself. If your main need is an AI agent in GitHub, Copilot is the closer match; if you need a Java or Kotlin IDE, IntelliJ is the relevant product.
Questions people ask
Is GitHub Copilot a replacement for IntelliJ IDEA?
No, not on the published information. Copilot is an AI coding agent for GitHub workflows, including task sessions and pull request review. IntelliJ IDEA is an IDE with code navigation and tools to run, debug, and test applications. A developer could choose one or use them for different jobs.
Is IntelliJ IDEA free?
Yes. JetBrains lists a free Core edition for commercial and non-commercial use, but does not publish seat or usage limits. Its published pricing details also list AI Free with three credits per 30 days. Ultimate is paid, with a 30-day trial listed for individual plans.
Which is better for Java development?
IntelliJ IDEA is the direct fit if you need a Java IDE: JetBrains identifies it as an IDE for Java and Kotlin and lists code-aware navigation plus built-in run, debug, and test tools. Copilot can assist with coding tasks, but it is not presented as a Java IDE.
Which costs less: Copilot or IntelliJ IDEA?
Copilot Pro costs $10 per user per month, while IntelliJ IDEA Ultimate for individuals costs $19.90 monthly or $16.58 per month billed annually. Both have a free option, but they cover different needs: Copilot is an AI coding agent, and IntelliJ is an IDE.