GGUF specification: the standard format for local quantized LLM models
In one sentence The GGUF (GGML Unified Format) specification becomes the standard for distributing quantized LLM models, replacing GGML with an extensible format including rich metadata, natively supported by llama.cpp, Ollama, and LM Studio.
When open-source AI models are released, the weights are often in different, incompatible formats. GGUF solves this by creating a single, standardized file format — like PDF for documents.
Before GGUF there was GGML (an earlier format from the same project), but it had limitations: it couldn't contain tokenizer information, metadata was fixed and non-extensible, and new models required code changes. GGUF overcomes all of this with a modular design.
The practical result: a model in GGUF format can be downloaded from HuggingFace Hub and works directly in llama.cpp, Ollama, LM Studio, and dozens of other tools without any conversion. It's become the "PDF format" of local models — the standard everyone uses.
Companies
ggerganov (community), Ollama, LM Studio
Tools
GGUF, llama.cpp, Ollama, LM Studio
Tags
Sources