transformers safetensors llama text-generation en arxiv:2306.02707 arxiv:2302.13971 base_model:migtissera/Synthia-13B-v1.2 base_model:quantized:migtissera/Synthia-13B-v1.2 license:llama2 autotrain_compatible text-generation-inference 4-bit gptq region:us