TextSynth is a tool that offers access to large language and text-to-image models through a REST API and a convenient playground. It can be used for text completion, question answering, classification, chat, translation, and image generation. It uses custom inference code, providing faster inference and lower costs. This optimization improves the user experience while managing resources. One of its features is text completion using large language models. Users can input text and let the neural network generate different, randomly chosen completions with each try. The tool offers translation capabilities, supporting around 100 languages. This makes it a valuable tool for communication across language barriers. Additionally, TextSynth allows users to create images from text input using the Stable Diffusion model.