# Duck.ai vs Kagi

> Duck.ai: Chat with ChatGPT, Claude and other AI models without handing over your data
> Kagi: Ad-free, subscription-funded search engine with built-in AI assistant and summarization tools

- Duck.ai profile: https://finderatlas.com/tools/duck-ai
- Kagi profile: https://finderatlas.com/tools/kagi
- Comparison page: https://finderatlas.com/compare/duck-ai-vs-kagi
- Last reviewed: October 2026

## Verdict

Duck.ai and Kagi are both AI Assistants tools. Kagi scores higher in FinderAtlas's editorial review (8.1 vs 7.8 out of 10), led by feature depth and performance & speed. Both have a free plan or trial. Only Kagi is available on iOS and Android and offers an API.

### Choose Duck.ai if

- You want a tool built for everyday questions and drafting where you do not want chats tied to an account or used for training, and trying several models in one place.
- Free tier works without an account.
- Personal metadata such as IP address is removed before prompts reach providers.

### Choose Kagi if

- You want a tool built for people who want ad-free, personalizable search results and are willing to pay a subscription to get them.
- No advertising; revenue comes from subscriptions.
- Site-level raise, lower and block controls let users tune results.

## Pricing

| | Duck.ai | Kagi |
| --- | --- | --- |
| Pricing model | Freemium | Free trial |
| Free plan or trial | Yes | Yes |
| Starting price | $0 | $0 |

## Features

| Feature | Duck.ai | Kagi |
| --- | --- | --- |
| Multi-model chat | Yes | Not listed |
| No account required | Yes | Not listed |
| Metadata removal | Yes | Not listed |
| No training on chats | Yes | Not listed |
| Local recent chats | Yes | Not listed |
| Voice chat | Yes | Not listed |
| Image generation | Yes | Not listed |
| File and image upload | Yes | Not listed |
| Subscription bundle | Yes | Not listed |
| Ad-free search | Not listed | Yes |
| Site personalization | Not listed | Yes |
| Lenses | Not listed | Yes |
| Kagi Assistant | Not listed | Yes |
| Quick Answer and Summarize Page | Not listed | Yes |
| Developer APIs | Not listed | Yes |
| Orion browser | Not listed | Yes |
| Kagi Translate and Kagi News | Not listed | Yes |

## Platforms

| Platform | Duck.ai | Kagi |
| --- | --- | --- |
| Web | Yes | Yes |
| Windows | No | No |
| macOS | No | No |
| iOS | No | Yes |
| Android | No | Yes |
| API | No | Yes |
| Browser Extension | No | No |

## Duck.ai strengths

- Free tier works without an account.
- Personal metadata such as IP address is removed before prompts reach providers.
- Chats are not used for training by DuckDuckGo, and providers agree not to train on them.
- Several providers' models are available from one interface.
- Plus ($9.99/month) bundles a VPN and identity protection services.

## Duck.ai limitations

- Free tier is limited by daily usage caps, and the paid limits are not published as numbers.
- Strongest models are subscriber-only, and the top tier costs $19.99/month.
- No public API and no standalone mobile app found.
- Chat history is local by default, so it does not sync across devices without opting into Sync & Backup.

## Kagi strengths

- No advertising; revenue comes from subscriptions.
- Site-level raise, lower and block controls let users tune results.
- Lenses give quick topic-specific filtering such as Academic or Forums.
- Ultimate bundles access to Claude, GPT and Gemini models in Assistant.
- Public APIs and an MCP server support developer use.
- Transparent funding history published by the company.

## Kagi limitations

- No permanent free tier: the trial is limited to 100 searches.
- The $5 Starter plan caps searches at 300 per month, which users report running out of quickly.
- Reviewers report that lens use and loading more results can count as extra searches.
- Full AI model access requires the $25 Ultimate plan.

## FAQ

**Is Duck.ai better than Kagi?**

It depends on your workflow. Duck.ai is built for everyday questions and drafting where you do not want chats tied to an account or used for training, and trying several models in one place. Kagi is built for people who want ad-free, personalizable search results and are willing to pay a subscription to get them.

**What are the key feature differences between Duck.ai and Kagi?**

Duck.ai: Chat with ChatGPT, Claude and other AI models without handing over your data. Kagi: Ad-free, subscription-funded search engine with built-in AI assistant and summarization tools.

**Does Duck.ai or Kagi have a free plan?**

Yes, both do. Duck.ai is freemium and Kagi is free trial, and each has a free plan or trial.

**Which is cheaper, Duck.ai or Kagi?**

Both can be used for free. Paid plans differ in limits and features, so compare the tiers in the pricing table above.