DuckDuckGo

Duck.ai Anonymous AI Chat

Duck.ai is DuckDuckGo's anonymizing proxy in front of third-party LLMs. Free tier currently includes Anthropic Claude 4.5 Haiku, Meta Llama 4 Scout, Mistral Small 3 24B, OpenAI GPT-4o mini / GPT-5 mini / gpt-oss-120b. Duck.ai Plus adds GPT-4o, GPT-5.2, Claude Sonnet 4.5, Llama 4 Maverick. Duck.ai Pro adds Claude Opus 4.6, higher reasoning effort and 2x usage limits. DuckDuckGo strips IP / identifiers before forwarding to upstream model providers and does not retain prompts or train on them. There is no public REST API; access is via the web UI and the in-browser integration in DuckDuckGo Browser.

Duck.ai Anonymous AI Chat is one of 4 APIs that DuckDuckGo publishes on the APIs.io network.

Tagged areas include AI Chat, LLM Proxy, Privacy, and Anonymous. The published artifact set on APIs.io includes API documentation and pricing.

GitHub

Documentation

📖
Documentation
https://duckduckgo.com/duckduckgo-help-pages/duckai/

Other Resources

🔗
Portal
https://duck.ai/
🔗
Pricing
https://raw.githubusercontent.com/api-evangelist/duckduckgo/refs/heads/main/plans/duckduckgo-plans-pricing.yml
🔗
Capabilities
https://raw.githubusercontent.com/api-evangelist/duckduckgo/refs/heads/main/capabilities/shared/duck-ai-capabilities.yaml

API entry from apis.yml

apis.yml Raw ↑ 
aid: duckduckgo:duck-ai
name: Duck.ai Anonymous AI Chat
humanURL: https://duck.ai/
baseURL: https://duck.ai
tags:
- AI Chat
- LLM Proxy
- Privacy
- Anonymous
description: Duck.ai is DuckDuckGo's anonymizing proxy in front of third-party LLMs. Free tier currently
  includes Anthropic Claude 4.5 Haiku, Meta Llama 4 Scout, Mistral Small 3 24B, OpenAI GPT-4o mini / GPT-5
  mini / gpt-oss-120b. Duck.ai Plus adds GPT-4o, GPT-5.2, Claude Sonnet 4.5, Llama 4 Maverick. Duck.ai
  Pro adds Claude Opus 4.6, higher reasoning effort and 2x usage limits. DuckDuckGo strips IP / identifiers
  before forwarding to upstream model providers and does not retain prompts or train on them. There is
  no public REST API; access is via the web UI and the in-browser integration in DuckDuckGo Browser.
properties:
- type: Documentation
  url: https://duckduckgo.com/duckduckgo-help-pages/duckai/
- type: Portal
  url: https://duck.ai/
- type: Pricing
  url: plans/duckduckgo-plans-pricing.yml
- type: Capabilities
  url: capabilities/shared/duck-ai-capabilities.yaml