transformers safetensors cohere text-generation conversational fr dataset:Svngoku/french-multilingual-reward-bench-dpo arxiv:2408.14960 arxiv:2407.02552 arxiv:2406.18682 arxiv:2410.10801 base_model:CohereForAI/aya-expanse-8b base_model:finetune:CohereForAI/aya-expanse-8b autotrain_compatible text-generation-inference endpoints_compatible region:us