Question: I'm looking for a solution that enables fast and easy debugging, building, and deployment of Generative Pre-trained Transformers (GPTs).

If you're looking for a more powerful foundation for building, testing and deploying Generative Pre-trained Transformers (GPTs), LastMile AI is a top contender. This full-stack developer foundation has a number of features to help you get generative AI to work. Among them are Auto-Eval for detecting hallucinations, RAG Debugger for optimization, and AIConfig for prompt and model parameter tuning. The foundation also comes with a Workbooks environment that's something like a notebook for prototyping and a dedicated team to help you get your GPT apps into production.

Another top contender is Klu, which is geared for building, deploying and optimizing GPT apps using large language models like GPT-4, Llama 2 and Mistral. Klu has features for prompt engineering, version control and performance monitoring so you can iterate and optimize your models more quickly. Built-in analytics and support for several LLMs means Klu is designed to help AI engineers and teams work more efficiently and securely by letting them build AI apps.

If you prefer a low-code approach, UBOS lets you build your own custom AI apps in the browser and deploy them with a single click to any cloud. It supports a variety of AI models, including LLMs like ChatGPT and Llama 2, and has collaborative workspaces and a RAG framework. It's designed for both technical and nontechnical people, making it a good choice for startups and enterprises.