DuckDuckGo’s free AI chat now rivals ChatGPT — no account required
Duck.ai now offers GPT-5.6 Luna as its default free model, with no account or login required.
DuckDuckGo anonymizes prompts and lets users switch between models including Claude Haiku 4.5, Mistral Small 4, and Gemma 4.
Duck.ai offers greater model variety than privacy-focused rivals, although Lumo or Confer may be safer for highly sensitive conversations.