Duck.ai

About Duck.ai

What is Duck.ai (2026 update)

Duck.ai is a privacy-focused AI chat platform from DuckDuckGo that lets you talk to several third-party language models through one interface without creating an account. It sits inside the DuckDuckGo search engine and browser, and it strips identifying information from your requests before sending them to the underlying AI providers, so the model makers do not see who you are.

What is new in 2026

DuckDuckGo added reasoning capability to its AI models in 2026, so both the OpenAI and Anthropic models in Duck.ai can now work through more complex questions step by step, not just answer instantly. The free tier was upgraded to include GPT-5.4 nano, GPT-5.4 mini, Claude 4.5 Haiku, Mistral Small 4, gpt-oss-120b and Gemma 4 31B. DuckDuckGo also introduced a new Pro subscription tier that sits above the existing Plus plan, image generation directly inside chat threads, PDF upload support across most models, and image analysis on both OpenAI and Anthropic models. The browser address bar also gained shortcuts to switch models, pick a reasoning level, start a voice chat or attach a web page without opening Duck.ai in a separate tab.

Key features

• Access to multiple AI providers (OpenAI, Anthropic, Mistral, Meta open models) from one chat window
• No account required to use the free tier, and DuckDuckGo states conversations are not used to train the underlying models
• Reasoning mode on supported OpenAI and Anthropic models for harder questions
• Image generation inside an existing chat, plus image and PDF upload for analysis
• Voice chat and address bar shortcuts for switching models fast

Pricing in 2026

Note: Plus and Pro are part of DuckDuckGo’s broader subscription, which bundles a VPN, personal information removal and identity theft restoration alongside the AI features, so you are not only paying for AI chat access.

Who should use it

Duck.ai fits you if privacy is your main concern when using AI chatbots, you want to try several frontier models without juggling separate ChatGPT, Claude and Mistral accounts, or you already use DuckDuckGo’s browser and want AI access built into your workflow without signing up anywhere. It also works well as a free way to sample GPT-5.4 and Claude 4.5 Haiku before committing to a paid plan elsewhere.

Limitations and alternatives

Duck.ai does not offer custom GPTs, a code interpreter, Microsoft 365 style integrations, or the deep agentic features some competitors ship. The free tier also caps you to smaller, faster models rather than the top-tier reasoning versions, and daily usage limits apply even on paid plans. If you need deeper research with live citations, Perplexity is built specifically for that. If you want direct, unfiltered access to a single frontier model with the fullest feature set, going straight to ChatGPT or Claude.ai gives you features Duck.ai does not proxy, such as custom GPTs or projects. A fourth option worth a look is Mistral Le Chat, which also markets itself on data control and gives you a direct relationship with one model family instead of a rotating proxy layer. Weigh how much you value trying many models against how much you value the deepest feature set of any single provider before you settle on a daily driver.

Frequently asked questions

Is Duck.ai free to use?

Yes. The free tier gives you access to GPT-5.4 nano, GPT-5.4 mini, Claude 4.5 Haiku, Mistral Small 4, gpt-oss-120b and Gemma 4 31B without an account.

What is the difference between Duck.ai Plus and Pro?

Plus costs $9.99/month and adds models like GPT-5.2 and Claude Sonnet 4.6 with higher usage limits. Pro costs $19.99/month, doubles the usage limits again, and adds exclusive access to Claude Opus 4.8 with the highest reasoning effort available.

Does Duck.ai keep my conversations private?

DuckDuckGo states it strips identifying information from requests before they reach the AI providers and that conversations are not used to train the underlying models, but check the official site for the current privacy policy details.

What are the best alternatives to Duck.ai?

Perplexity for research with live citations, ChatGPT or Claude.ai for direct access to a single model's full feature set including custom GPTs or projects, and Proton Lumo for another privacy-first chat option.

Information last verified: September 2026.