The recent "Llamathon" hackathon at South Park Commons saw teams pushing the boundaries of Meta's new Llama 3.1 family of open-source models, with two winning projects: TestNinja and VibeCheck. TestNinja used a combination of traditional software engineering and AI engineering to create an LLM-powered test generation tool that leverages deterministic Python code to extract relevant context for test generation, while VibeCheck automated the manual process of generating early-stage design concepts using Llama 3.1's inherent design intelligence, reducing time spent on mood boards by designers. Both projects utilized Baseten's free model hosting and technical support to deliver impressive results.