ChatGPT = https://chatgpt.com/
Claude = https://claude.ai/
Gemini = https://gemini.google.com/app
NotebookLM = https://notebooklm.google.com/
DeepSeek = https://chat.deepseek.com/
FELO = https://felo.ai/zh-Hant/search
Perplexity = https://www.perplexity.ai/
Raphael = https://raphael.app/zh-Hant