Zoo is an open-source AI toolkit developed by Replicate, designed primarily for comparing text-to-image models. It provides an environment conducive to visualizing, interpreting, and contrasting a range of models. A key functionality of 'Zoo' is enabling users to manipulate and assess popular models akin to Stable Diffusion and DALL-E, exploring their effectiveness and relevance for different tasks and challenges. Operable via an interactive playground, Zoo allows users to control various parameters affecting the model. Uniquely, it encompasses Memorie, ControlNet, and X/Y plot features which offer vast opportunities for investigating and interpreting results or findings. Besides evaluation, Zoo caters to storage requirements with the integration of PostgreSQL database and file storage from Supabase. Furthering accessibility and ease-of-use, 'Zoo' is hosted on GitHub, allowing users to readily access, modify, and contribute to the codebase.