transformers safetensors gguf falcon text-generation commercial use custom_code en dataset:tiiuae/falcon-refinedweb dataset:Trelis/openassistant-falcon arxiv:2205.14135 arxiv:1911.02150 arxiv:2101.00027 arxiv:2005.14165 arxiv:2104.09864 arxiv:2306.01116 autotrain_compatible text-generation-inference region:us