Image GPT
The model is open sourced on GitHub: https://github.com/openai/image-gptOddly, it still uses TensorFlow like the original GPT-2 release despite OpenAI's declared switch to PyTorch, and it has dependency hell so it's not easy to create a wrapper tool for it.Since it's still the GPT-2 architecture, it might be possible to port the weights to Huggingface Transformers (for the RGB generation), and then write a wrapper to extend it for the image rendering. (filed an issue here: https://github.com/huggingface/transformers/issues/5088 )