Mellum by JetBrains vs Mentat: Which is Better in 2026?
Choosing between Mellum by JetBrains and Mentat 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: Mentat is our overall pick for AI coding workflows. Pick Mellum by JetBrains if you need its specific feature set.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Mellum by JetBrains
AI coding assistant for JetBrains IDEs
Best for you if:
- • AI assistant integrated into JetBrains IDEs for coding.
- • Provides intelligent code completion, generation, and explanation.
Mentat
AI coding assistant for terminal
Best for you if:
- • You need something completely free
- • Mentat is an AI coding assistant that works within your terminal
- • It edits code across files using GPT-4 with context awareness
| At a Glance |  Mellum by JetBrains |  Mentat |
|---|---|---|
Starts at | Custom | FreeFree tier available |
Best For | AI Coding | AI Coding |
Rating | - | - |
Free plan | No | Yes |
Choose Mellum by JetBrains or Mentat?
Choose Mellum by JetBrains if
AI coding assistant for JetBrains IDEs
- Deep integration with JetBrains IDEs for a seamless workflow.
- Significantly speeds up coding and reduces boilerplate.
- Helps developers understand unfamiliar codebases quickly.
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 (Mellum by JetBrains requires payment)
| Feature | Mellum by JetBrains | Mentat |
|---|---|---|
| Pricing Model | Paid | Free |
| User Rating | No ratings yet | No ratings yet |
| Categories | AI CodingDeveloper Tools | AI CodingTerminal Tools |
In-Depth Analysis
Mellum by JetBrains
AI coding assistant for JetBrains IDEs
Strengths
- +Deep integration with JetBrains IDEs for a seamless workflow.
- +Significantly speeds up coding and reduces boilerplate.
- +Helps developers understand unfamiliar codebases quickly.
- +Improves code quality through intelligent suggestions and refactoring.
Weaknesses
- -Requires an existing JetBrains IDE subscription.
- -May have a learning curve for optimal utilization of AI features.
- -Reliance on AI might reduce deep understanding of certain code segments over time.
Key features
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
Pricing: Mellum by JetBrains vs Mentat
| Plan | Mellum by JetBrains | Mentat |
|---|---|---|
| Tier 1 | N/A | Free Open Source |
| Tier 2 | N/A | $35 Pro |
Pricing verified from each vendor's public pricing page. Compare in detail on Mellum by JetBrains pricing and Mentat pricing.
Who Should Use What?
On a budget?
Mentat is free. Mellum by JetBrains is paid.
Go with: Mentat
Want the highest-rated option?
Neither has ratings yet.
Too early to call on ratings — compare on features and pricing.
Value user reviews?
Neither has ratings yet.
Too early to call — neither has ratings yet.
3 Questions to Help You Decide
What's your budget?
Mellum by JetBrains is paid. Mentat is free. Go with Mentat if free matters most.
What's your use case?
Both are ai coding tools. Compare their specific features to decide.
How important are ratings?
Neither has ratings yet.
Key Takeaways
Mentat
- Completely free
- Our pick for this comparison
Mellum by JetBrains
- Choose if you want aI coding assistant for JetBrains IDEs
The Bottom Line
Mentat is our pick.
Frequently Asked Questions
Is Mellum by JetBrains or Mentat better?
Mentat is rated in our evaluation. Mellum by JetBrains is paid and Mentat is free.
What are Mellum by JetBrains and Mentat used for?
Mellum by JetBrains: AI coding assistant for JetBrains IDEs. Mentat: AI coding assistant for terminal.
What does Mellum by JetBrains cost vs Mentat?
Mellum by JetBrains is a paid tool. Mentat is completely free. Visit their websites for detailed pricing.