GGUF is a file format used by many local AI tools for storing model weights and metadata. It is especially common with models prepared for llama.cpp-based runtimes.
In practice
People often download GGUF files when they want to run open-weight models locally with different quantization levels. The file name may indicate model size and compression quality.
What to watch
A GGUF file is not automatically compatible with every app. Check your runtime, hardware, context support, and license before using it.