kitio.aiDuck.ai vs Lighten.im
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Lighten.im is completely free, while Duck.ai is freemium.
At a glance
Best for
Category
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Anonymous chats
- Several model providers
- Local chat history
- Image uploads
- Built into DuckDuckGo browser
- Anonymous venting
- AI replies in about 30 seconds
- Conversation starter prompts
- Audio playback of replies
- Crisis support links
| Feature | Duck.ai | Lighten.im |
|---|---|---|
| Best for | DuckDuckGo's private chat with popular models and no account needed | Free, anonymous AI replies for young people who need to vent |
| Category | Chat assistants | Chat assistants |
| Pricing model | Freemium | Free |
| Starting price | $9.99/mo | Free |
| Free plan | Yes | Yes, fully free |
| Made by | DuckDuckGo | Lighten.im |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Lighten.im is completely free, while Duck.ai is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
2 plans
Free
Free
- Private AI chat, no account needed
- Access to popular models
DuckDuckGo Subscription
$9.99/mo
- Access to more advanced models
- Higher usage limits
- Includes VPN and privacy tools
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Duck.ai
- No account or tracking
- Free access to good models
- Paid plan bundles a VPN
- Fewer tools than ChatGPT
- Top models need a subscription
- Limited file handling
Lighten.im
- No account or personal details needed
- Completely free
- Links to crisis resources
- Not a replacement for therapy
- One-off replies rather than ongoing chat
- Messages capped at 1,800 characters
Which one should you choose?
Choose Duck.ai if you want:
- No account or tracking
- Free access to good models
- Paid plan bundles a VPN
Watch out: fewer tools than chatgpt.
Choose Lighten.im if you want:
- No account or personal details needed
- Completely free
- Links to crisis resources
Watch out: not a replacement for therapy.
Duck.ai vs Lighten.im FAQ
What is the difference between Duck.ai and Lighten.im?
Duck.ai: DuckDuckGo's private chat with popular models and no account needed. Lighten.im: Free, anonymous AI replies for young people who need to vent. Both are chat assistants tools.
Is Duck.ai or Lighten.im cheaper?
Lighten.im is completely free, while Duck.ai is freemium.
Do Duck.ai and Lighten.im have free plans?
Duck.ai: Yes. Lighten.im: Yes, fully free.
Who makes Duck.ai?
Duck.ai is made by DuckDuckGo, based in United States.
Who makes Lighten.im?
Lighten.im is made by Lighten.im.
Which should I choose, Duck.ai or Lighten.im?
Choose Duck.ai if you value no account or tracking and free access to good models. Choose Lighten.im if you value no account or personal details needed and completely free.