transformers pytorch gpt_neox text-generation causal-lm code-generation The Pile en code arxiv:2104.09864 arxiv:2204.06745 arxiv:2201.07311 arxiv:2101.00027 arxiv:2207.14255 arxiv:2108.12409 license:apache-2.0 autotrain_compatible text-generation-inference endpoints_compatible region:us