Open-source Large Language Models (LLMs) are becoming crucial in AI development, and Anyscale has made significant strides by providing fast and affordable APIs for models like Llama2 and Mistral. To fully utilize these LLMs, developers require a comprehensive LLMOps stack that ensures reliability, security, and observability, which is achieved by combining Portkey and Anyscale Endpoints. Portkey offers observability, model management, security, and reliability, while Anyscale Endpoints facilitates efficient LLM serving, private deployment, and fine-tuning, making them a powerful toolkit for AI developers. Anyscale Endpoints allow private deployment in cloud environments for data privacy and offer fine-tuning of open-source models for custom applications, while Portkey enhances the development workflow with real-time monitoring, strict security protocols, and integration capabilities. The integration of Portkey with Anyscale Endpoints forms a robust LLMOps stack that supports all aspects of AI application development, streamlining processes and enabling developers to concentrate on innovation and efficiency.