kitio.aiRubii vs Mentat
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Rubii starts at $10.99/mo and Mentat starts at See pricing page. Check both pricing pages for current plans.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Long-term character memory
- Editable memory notes
- Custom character creation
- AI image generation
- Web and mobile apps
- AI chat support
- Mood and stress tracking
- Private journal
- Guided breathing
- Coping strategies
| Feature | Rubii | Mentat |
|---|---|---|
| Best for | AI character chat for long, story-driven roleplay with memory | Anonymous AI companion for stress, mood and journaling |
| Category | Chat assistants | Chat assistants |
| Pricing model | Freemium | Freemium |
| Starting price | $10.99/mo | See pricing page |
| Free plan | Yes | Yes |
| Made by | Rubii | Mentat |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Rubii starts at $10.99/mo and Mentat starts at See pricing page. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- Character chat to start
- Web, iPhone and Android
Plus
$10.99/mo
- 800 Rubies per month
- About 1,600 messages or 400 images
Pro
$19.99/mo
- 3,000 Rubies per month
- About 6,000 messages or 1,500 images
Ultra
$39.99/mo
- 6,600 Rubies per month
- About 13,000 messages or 3,300 images
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Rubii
- Characters remember past chats
- You can edit what they remember
- Free to start on web and mobile
- Messages and images use paid Rubies
- Long replies can be slow to read
- Mainly for entertainment use
Mentat
- No account or name needed
- Available any time of day
- Encryption claimed for chats and journal
- Not a replacement for a licensed therapist
- Paid plan details are not shown on the site
Which one should you choose?
Choose Rubii if you want:
- Characters remember past chats
- You can edit what they remember
- Free to start on web and mobile
Watch out: messages and images use paid rubies.
Choose Mentat if you want:
- No account or name needed
- Available any time of day
- Encryption claimed for chats and journal
Watch out: not a replacement for a licensed therapist.
Rubii vs Mentat FAQ
What is the difference between Rubii and Mentat?
Rubii: AI character chat for long, story-driven roleplay with memory. Mentat: Anonymous AI companion for stress, mood and journaling. Both are chat assistants tools.
Is Rubii or Mentat cheaper?
Rubii starts at $10.99/mo and Mentat starts at See pricing page. Check both pricing pages for current plans.
Do Rubii and Mentat have free plans?
Rubii: Yes. Mentat: Yes.
Who makes Rubii?
Rubii is made by Rubii.
Who makes Mentat?
Mentat is made by Mentat.
Which should I choose, Rubii or Mentat?
Choose Rubii if you value characters remember past chats and you can edit what they remember. Choose Mentat if you value no account or name needed and available any time of day.