Mentat vs IntelliJ IDEA: Which is Better in 2026?
Choosing between Mentat and IntelliJ IDEA comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: IntelliJ IDEA is our overall pick for ide & code editors workflows. Pick Mentat if you need AI coding.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Mentat
AI coding assistant for terminal
Best for you if:
- • You need something completely free
- • You need AI coding features specifically
- • Mentat is an AI coding assistant that works within your terminal
- • It edits code across files using GPT-4 with context awareness
IntelliJ IDEA
The capable & ergonomic Java IDE
Best for you if:
- • You need ide & code editors features specifically
- • Java IDE that enterprise teams rely on
- • Advanced refactoring handles complex changes
| At a Glance |  Mentat |  IntelliJ IDEA |
|---|---|---|
Starts at | $35/moPro | $599/yearUltimate |
Best For | AI Coding | IDE & Code Editors |
Rating | - | - |
Choose Mentat or IntelliJ IDEA?
Choose Mentat if
AI coding assistant for terminal
- AI coding assistant in terminal
- Code understanding and generation
- Open-source project
- You want a fully free tool (IntelliJ IDEA requires payment)
- Your work is AI coding-shaped, not ide & code editors-shaped
Choose IntelliJ IDEA if
The capable & ergonomic Java IDE
- Best Java IDE
- Smart completions
- Refactoring tools
- Your work is ide & code editors-shaped, not AI coding-shaped
| Feature | Mentat | IntelliJ IDEA |
|---|---|---|
| Pricing Model | Free | Freemium |
| User Rating | No ratings yet | ★4.7/5 3,562 reviews |
| Categories | AI CodingTerminal Tools | IDE & Code EditorsDeveloper Tools |
In-Depth Analysis
Mentat
AI coding assistant for terminal
Strengths
- +AI coding assistant in terminal
- +Code understanding and generation
- +Open-source project
- +Command-line interface for developers
- +Context-aware code suggestions
Weaknesses
- -Terminal-based (no GUI)
- -Setup and configuration needed
- -May not match commercial alternatives
- -Requires technical proficiency
- -Community-driven development
Key features
IntelliJ IDEA
The capable & ergonomic Java IDE
Strengths
- +Best Java IDE
- +Smart completions
- +Refactoring tools
Weaknesses
- -Resource intensive
- -Expensive Ultimate
Key features
Pricing: Mentat vs IntelliJ IDEA
| Plan | Mentat | IntelliJ IDEA |
|---|---|---|
| Tier 1 | Free Open Source | Free Community |
| Tier 2 | $35 Pro | $599 year Ultimate |
Pricing verified from each vendor's public pricing page. Compare in detail on Mentat pricing and IntelliJ IDEA pricing.
Who Should Use What?
On a budget?
Mentat is free. IntelliJ IDEA is freemium.
Go with: Mentat
Want the highest-rated option?
Neither has user reviews yet.
Go with: Mentat
Value user reviews?
Neither has user reviews yet.
Go with: IntelliJ IDEA
3 Questions to Help You Decide
What's your budget?
Mentat is free. IntelliJ IDEA is freemium. Go with Mentat if free matters most.
What's your use case?
Mentat is a AI coding tool. IntelliJ IDEA is in ide & code editors. Pick the category that matches your needs.
How important are ratings?
Neither has user reviews yet.
Key Takeaways
IntelliJ IDEA
- Free tier available
- Our pick for this comparison
Mentat
- Completely free
- Better fit for AI coding
The Bottom Line
IntelliJ IDEA is our pick. That said, Mentat is free, hard to beat on price.
Frequently Asked Questions
Is Mentat or IntelliJ IDEA better?
IntelliJ IDEA is rated in our evaluation. Mentat is free and IntelliJ IDEA is freemium.
What are Mentat and IntelliJ IDEA used for?
Mentat: AI coding assistant for terminal. IntelliJ IDEA: The capable & ergonomic Java IDE.
What does Mentat cost vs IntelliJ IDEA?
Mentat is completely free. IntelliJ IDEA is freemium (free tier + paid plans). Visit their websites for detailed pricing.