Duck.ai (DuckDuckGo AI chat)
DuckDuckGo No signup
The catch: Chat only, no API, and an unpublished daily cap; the larger models need a paid DuckDuckGo subscription (DuckDuckGo help pages).
| Access | No signup |
|---|---|
| Free limits | Free, no account required. Daily usage limit (number not published); daily limits reset at midnight UTC. Free models: Claude 4.5 Haiku, Mistral Small 4, GPT-5.4 nano, GPT-5.4 mini, plus gpt-oss-120b and Gemma 4 31B hosted by Tinfoil.sh. Paid Plus/Pro subscriptions add models (e.g. Claude Sonnet 4.6, GPT-5.6 Terra) and higher limits. |
| Modality | text |
| Credit card | Not required |
| Commercial use | – |
| Trains on your data | No |
| Licence or terms | Duck.ai Terms of Service and Privacy Policy |
| Context window | – |
| Model id | Claude 4.5 Haiku |
| Base URL | – |
| Last checked | 2 Oct 2026 |
How to use Claude Haiku 4.5, GPT-5.4 mini…
Use it in the browser; there is no API.
Paste into Claude Code
I want to use the free AI model "Claude Haiku 4.5, GPT-5.4 mini…" from Duck.ai (model id: Claude 4.5 Haiku) in my project. Please: 1. Check the provider docs and give me the exact steps to get a free API key. 2. Give me a minimal working example that reads the key from an environment variable. 3. Tell me the real free limits and any catch (commercial use, card, data use). Listed limits: Free chat, unpublished daily cap. 4. If the same provider has a more generous free option, mention it.
Before you ship on it
- Chat only, no API, and an unpublished daily cap; the larger models need a paid DuckDuckGo subscription (DuckDuckGo help pages).
- Duck.ai Terms (last updated Oct 1, 2026): 'We claim no ownership of either your Prompts or Outputs', but they bar automated querying and 'developing or offering AI services'. No explicit commercial-use clause.
- Free tiers are shared capacity: treat the limits as a ceiling, not a promise, and keep a paid fallback.
Questions
Is Duck.ai (DuckDuckGo AI chat) free?
Yes. Duck.ai offers it as no signup, with these limits: Free chat, unpublished daily cap. No credit card is needed.
Can I use Duck.ai (DuckDuckGo AI chat) commercially?
The provider’s terms do not say. Ask them before you build a product on it.
How do I start with Duck.ai (DuckDuckGo AI chat)?
Use it in the browser; there is no API.
Source: duckduckgo.com/duckduckgo-help-pages/duckai/usage-limits, checked 2 Oct 2026.