DeepSeek-V4 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 DeepSeek-V4 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:
DeepSeek-V4
The next-generation flagship AI model for repo-level coding and long-context reasoning.
Best for you if:
- • You want a tool that enables advanced repo-scale agent workflows, including refactoring and multi-file debugging
Mentat
AI coding assistant for terminal
Best for you if:
- • You want a fully free tool (DeepSeek-V4 requires payment)
| At a Glance | DeepSeek-V4 | Mentat |
|---|---|---|
Starts at | Not published | Free plan, paid from $35/mo, billed monthly Pro plan |
Category | AI Coding AI Agents | 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 DeepSeek-V4 or Mentat?
Choose DeepSeek-V4 if
- You want a tool that enables advanced repo-scale agent workflows, including refactoring and multi-file debugging
Choose Mentat if
- You want a fully free tool (DeepSeek-V4 requires payment)
In-Depth Analysis
DeepSeek-V4
The next-generation flagship AI model for repo-level coding and long-context reasoning.
The $0.01-$0.14 per 1M tokens range is competitive: the low end is cheaper than most proprietary APIs, while the high end aligns with standard pricing for advanced reasoning features.
Strengths
- Pro: Potential for significant cost reduction in AI development due to competitive pricing and open weights.
- Pro: Enables advanced repo-scale agent workflows, including refactoring and multi-file debugging.
- Pro: Supports local and self-hosted adoption, offering greater control over data and customization.
- Pro: High performance expected in coding, math, and long-prompt scenarios.
Weaknesses
- Con: The product is not yet released, and all specifications are based on rumors and leaks.
- Con: Leaked benchmarks are unverified and may not reflect official performance.
- Con: Release timing is uncertain, with possibilities of delays.
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: DeepSeek-V4 vs Mentat
| Tool | Plans and prices | Source |
|---|---|---|
| DeepSeek-V4 |
| deepseek-v4.ai read Oct 6, 2026 |
| 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 DeepSeek-V4 pricing and Mentat pricing.
Key Takeaways
DeepSeek-V4
- Worth considering for AI coding
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; DeepSeek-V4 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 DeepSeek-V4 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; DeepSeek-V4 has no public paid plan price on file. Only Mentat has a free plan.
What are DeepSeek-V4 and Mentat used for?
DeepSeek-V4: The next-generation flagship AI model for repo-level coding and long-context reasoning. Mentat: AI coding assistant for terminal.
What does DeepSeek-V4 cost vs Mentat?
DeepSeek-V4 has no public paid-plan price on file. Mentat's cheapest paid plan is Pro at $35/mo, billed monthly; it also has a free plan. Prices read on the vendors' pricing pages, latest check Oct 6, 2026.
What's the main difference between DeepSeek-V4 and Mentat?
DeepSeek-V4's main strength: potential for significant cost reduction in AI development due to competitive pricing and open weights. Mentat's main strength: AI coding assistant in terminal.
Spotted an outdated price or a wrong fact? Suggest a correction: we check it against the vendor's own page. Work for one of these vendors? Claim your listing to update it yourself.