Devin vs Mellum by JetBrains: Which is Better in 2026?
Choosing between Devin and Mellum by JetBrains 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: Devin 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:
Devin
AI software engineer by Cognition Labs
Best for you if:
- • Devin is an AI software engineer that can autonomously write, test, and deploy code
- • It handles complex engineering tasks from planning to implementation in a sandboxed environment
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.
| At a Glance |  Devin |  Mellum by JetBrains |
|---|---|---|
Starts at | $20/monthCore | Custom |
Best For | AI Coding | AI Coding |
Rating | - | - |
Free plan | No | No |
Choose Devin or Mellum by JetBrains?
Choose Devin if
AI software engineer by Cognition Labs
- AI software engineer
- End-to-end tasks
- Good for automation
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.
| Feature | Devin | Mellum by JetBrains |
|---|---|---|
| Pricing Model | Paid | Paid |
| User Rating | No ratings yet | No ratings yet |
| Categories | AI CodingAI Agents | AI CodingDeveloper Tools |
In-Depth Analysis
Devin
AI software engineer by Cognition Labs
Strengths
- +AI software engineer
- +End-to-end tasks
- +Good for automation
- +Innovative approach
- +Active development
Weaknesses
- -Waitlist/limited access
- -Expensive
- -Accuracy varies
- -Not replacement for devs
- -Early stage
Key features
Value 65/100. Devin's pricing is fair for individual developers with the $20/month Core plan, offering a pay-as-you-go model.
Watch out: Overage fees of $2.25/ACU on Core plan
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
Pricing: Devin vs Mellum by JetBrains
| Plan | Devin | Mellum by JetBrains |
|---|---|---|
| Tier 1 | $20 month Core | N/A |
| Tier 2 | $500 month Team | N/A |
| Tier 3 | custom Enterprise | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Devin pricing and Mellum by JetBrains pricing.
Who Should Use What?
On a budget?
Both are paid. Compare plans on their websites.
Go with: Devin
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?
Both are paid. Pricing won't help you decide here.
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
Devin
- Our pick for this comparison
Mellum by JetBrains
- Choose if you want aI coding assistant for JetBrains IDEs
The Bottom Line
Devin is our pick.
Frequently Asked Questions
Is Devin or Mellum by JetBrains better?
Devin is rated in our evaluation. Both are paid.
What are Devin and Mellum by JetBrains used for?
Devin: AI software engineer by Cognition Labs. Mellum by JetBrains: AI coding assistant for JetBrains IDEs.
What does Devin cost vs Mellum by JetBrains?
Devin is a paid tool. Mellum by JetBrains is a paid tool. Visit their websites for detailed pricing.