Duck.ai is a feature that allows you to have private conversations with 3rd-party AI chat models, anonymized by us. Anthropic’s Claude 4.5 Haiku, Meta’s Llama 4 Scout, Mistral AI’s Mistral Small 3 24B, and OpenAI’s GPT-5 mini, GPT-OSS, and GPT-4o mini are available to use for free.
In addition to all of the models available in the free version of Duck.ai, DuckDuckGo subscribers also get access to the additional, advanced AI models. Subscribers on the Plus plan get access to GPT-4o, GPT-5.2, Claude Sonnet 4.5, and Llama 4 Maverick. In addition to the Plus plan models, subscribers on the Pro plan also get Claude Opus 4.6, higher reasoning effort than Plus, and 2x higher usage limits than Plus.
Each model relies on unique algorithms and datasets and will respond to your prompts differently. You can use Duck.ai to get answers to questions, compose an email, summarize text, or just have an interesting conversation. Navigate there directly, or move from traditional search results to ask follow-up questions.
Return to past conversations with Duck.ai’s Recent Chats feature, which stores chats locally on your device – not on DuckDuckGo or other remote servers. Recent chats can be deleted individually or with a click of the Fire Button. You can also pin up to 5 chats to the top of your recent chats list for quick access and to prevent them from being deleted by the Fire Button within Duck.ai.
You can add or remove the Duck.ai button in your DuckDuckGo browser from browser settings, and hide the Duck.ai buttons on the search results page from search settings.
DuckDuckGo’s approach to AI is to provide private, useful, and optional AI features that don’t track how you use them, store your prompts, or train on your data. More information about optional AI-assisted answers on our search engine can be found here.