prompts.chat (formerly known as "Awesome ChatGPT Prompts") is one of the largest open-source prompt libraries on the web. It collects thousands of community-contributed prompts for ChatGPT, Claude, Gemini, Llama, Mistral, and other large language models, organized so that both newcomers and experienced practitioners can quickly find a prompt template for a specific role, task, or workflow.
Beyond the prompt collection itself, the project offers an interactive book covering more than 25 chapters on prompt engineering fundamentals, along with a game-based learning tool designed to introduce prompting concepts to children. The prompts are also distributed as CSV, Markdown, and a Hugging Face dataset, making them easy to reuse in other tools and pipelines.
The project is a good fit for beginners who want ready-made prompts to copy and adapt, as well as developers who want to integrate a large, well-maintained prompt dataset into their own applications via the CLI tool, Claude Code plugin, or MCP server support. Teams can also self-host a private, branded version of the library with authentication.
Backed by a very active open-source community and cited in academic work, prompts.chat is a practical starting point for learning how to write effective prompts and for sourcing prompt templates across a wide range of use cases.