openai==1.29.0 anthropic==0.25.7 google-generativeai==0.5.2 tiktoken==0.7.0 streamlit==1.33.0 langchain==0.1.16 langchain-community==0.0.34 langchain-openai==0.1.3 langchain-core==0.1.46 langchain-google-genai==1.0.3 langchain-anthropic==0.1.11 python-dotenv==1.0.0 duckduckgo_search==4.2 html2text==2020.1.16 lxml[html_clean]==5.2.1 readability-lxml==0.8.1 datetime