Compare Duck.ai vs Copy.ai vs Onyx

Side-by-side comparison of Duck.ai, Copy.ai, Onyx
FeatureDuck.aiCopy.aiOnyx
DescriptionDuck.ai is DuckDuckGo private AI chat. It helps you ask questions and draft answers without building an advertising profile around your prompts, so you can get help while keeping everyday browsing privacy habits.AI copywriting for marketing and salesA self-hosted AI chat and search platform that connects to your team's documents and apps. Built for: Small teams who want an AI assistant over their shared knowledge. Format: Self-hosted web app (Docker). License: Open-core: MIT, except ee/ directories (Onyx Enterprise License). Open source on GitHub (32,407 stars as of 2026-10-11).
PricingFree private AI chat (DuckDuckGo Duck.ai)$49/monthFree and open source (open-core: some features are paid); self-hosting, model or API costs may apply
Main categoryChat assistantsWritingResearch and notes
WebsiteVisit Duck.aiVisit Copy.aiVisit Onyx
Info last checkedOctober 14, 2026October 12, 2026October 13, 2026

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