transformers safetensors llama text-generation mergekit merge conversational arxiv:2203.05482 base_model:Nitral-Archive/Echidna-7b-128k base_model:merge:Nitral-Archive/Echidna-7b-128k base_model:cognitivecomputations/dolphin-2.9-llama3-8b-1m base_model:merge:cognitivecomputations/dolphin-2.9-llama3-8b-1m autotrain_compatible text-generation-inference endpoints_compatible region:us