impossible → routine

Frontier weights you can download

Downloading the weights of a largest-class language model and running them yourself.

Impossible

OpenAI withholds the full GPT-2, publishing a much smaller version and keeping back the datasets and training code.

source

5 years, 5 months

Routine

Meta publishes Llama 3.1's weights for anyone to download, customise and fine-tune.

405 billion parameters

source

All dated pairs