Streamlit's LLM Hackathon, in collaboration with LangChain, begins today, providing developers with resources and inspiration to create innovative applications using LangChain and Streamlit. The event encourages participants to contribute projects such as chatbots with advanced capabilities, applications using open-source models, and tools connecting unique data formats. To assist developers, LangChain offers reference implementations, a cookbook for building a Streamlit Chat UI, and a recently launched LangChain Hub for sharing and discovering prompts. The community is encouraged to contribute ideas and feedback throughout the Hackathon, with highlights of the best projects shared on social media and in a concluding blog post. Participants are motivated to engage with the community on Twitter and Discord, with the possibility of unofficial prizes for outstanding contributions.