Mellum by JetBrains vs Mentat: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for Mellum by JetBrains and Mentat side by side. This page compares data; it is not a hands-on review.
On the data: On the data below, Mentat leads on a free plan. We do not name an overall winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
Mellum by JetBrains
AI coding assistant for JetBrains IDEs
Best for you if:
- • You want deep integration with JetBrains IDEs for a seamless workflow
Mentat
AI coding assistant for terminal
Best for you if:
- • You want a fully free tool (Mellum by JetBrains requires payment)
| At a Glance | Mellum by JetBrains | Mentat |
|---|---|---|
Starts at | Not published | Free plan, paid from $35/mo, billed monthly Pro plan |
Category | AI Coding Developer Tools | AI Coding Developer Tools |
Rating | n/a | n/a |
Free plan | No | Yes |
Watch out for | n/a | Potential overage fees for Pro limits |
Choose Mellum by JetBrains or Mentat?
Choose Mellum by JetBrains if
- You want deep integration with JetBrains IDEs for a seamless workflow
- You want significantly speeds up coding and reduces boilerplate
Choose Mentat if
- You want a fully free tool (Mellum by JetBrains requires payment)
- You want AI coding assistant in terminal
- You want code understanding and generation
In-Depth Analysis
Mellum by JetBrains
AI coding assistant for JetBrains IDEs
Strengths
- Pro: Deep integration with JetBrains IDEs for a seamless workflow.
- Pro: Significantly speeds up coding and reduces boilerplate.
- Pro: Helps developers understand unfamiliar codebases quickly.
- Pro: Improves code quality through intelligent suggestions and refactoring.
Weaknesses
- Con: Requires an existing JetBrains IDE subscription.
- Con: May have a learning curve for optimal utilization of AI features.
- Con: Reliance on AI might reduce deep understanding of certain code segments over time.
Key features
Mentat
AI coding assistant for terminal
Mentat's pricing is quite generous with a robust free tier for self-hosters.
Watch out
Potential overage fees for Pro limits
Strengths
- Pro: AI coding assistant in terminal
- Pro: Code understanding and generation
- Pro: Open-source project
- Pro: Command-line interface for developers
- Pro: Context-aware code suggestions
Weaknesses
- Con: Terminal-based (no GUI)
- Con: Setup and configuration needed
- Con: May not match commercial alternatives
- Con: Requires technical proficiency
- Con: Community-driven development
Key features
Plans and prices: Mellum by JetBrains vs Mentat
| Tool | Plans and prices | Source |
|---|---|---|
| Mellum by JetBrains | No plan prices on file | jetbrains.com |
| Mentat |
| mentat.ai read Sep 29, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on Mellum by JetBrains pricing and Mentat pricing.
Key Takeaways
Mellum by JetBrains
- Choose if you want AI coding assistant for JetBrains IDEs
Mentat
- Has a free plan
What the data shows
On the data below, Mentat leads on a free plan. We do not name an overall winner for this pair.
- Mentat starts at $35/mo, billed monthly; Mellum by JetBrains has no public paid plan price on file.
- Only Mentat has a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do Mellum by JetBrains and Mentat compare in 2026?
On the data below, Mentat leads on a free plan. We do not name an overall winner for this pair. Mentat starts at $35/mo, billed monthly; Mellum by JetBrains has no public paid plan price on file. Only Mentat has a free plan.
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 has no public paid-plan price on file. Mentat's cheapest paid plan is Pro at $35/mo, billed monthly. Prices read on the vendors' pricing pages, latest check Sep 29, 2026.
What's the main difference between Mellum by JetBrains and Mentat?
Mellum by JetBrains's main strength: deep integration with JetBrains IDEs for a seamless workflow. Mentat's main strength: AI coding assistant in terminal.