Add duckduckgo-ai-chat (#391)

README.md

@@ -21,6 +21,7 @@ This list is a collection of the best Deno modules and resources.
   - [Frontend development](#frontend-development)
   - [Frontend framework](#frontend-framework)
   - [Game engine](#game-engine)
+  - [LLM](#llm)
   - [Logging](#logging)
   - [Machine Learning](#machine-learning)
   - [Mail](#mail)
@@ -140,6 +141,9 @@ This list is a collection of the best Deno modules and resources.
 - [ImageScript](https://github.com/matmen/ImageScript) - Image processing in JavaScript, utilizing WebAssembly for performance.
 - [monke](https://github.com/retraigo/monke) - Color quantization and dithering library with extra image filters (blur, invert, etc).
 
+### LLM
+- [duckduckgo-ai-chat](https://github.com/mumu-lhl/duckduckgo-ai-chat) - Providing Duckduckgo AI Chat API, which can use gpt-4o-mini for free.
+
 ### Logging
 - [sentry_deno](https://github.com/GJZwiers/sentry_deno) - Unofficial port of the Sentry SDK for JavaScript to Deno.
 - [dlog](https://github.com/dpmland/dlog) - A ussefull logger for the prompt with icons or simple version!