Question: Can you suggest a tool that allows me to build custom AI assistants and train them with my own files?

If you want to build your own custom AI assistants and train them with your own data, you might be interested in NexusGPT, a no-code interface for building and combining your own custom AI agents for different jobs. It can be used for autonomous task completion, integration with existing apps and fine-tuning with examples. NexusGPT's marketplace has 1,500+ prebuilt agents, so it's a very flexible and customizable way to automate your workflows.

Another good option is Nexus, which also offers a no-code interface for building AI assistants. It comes with prebuilt agents, auto planning and integration with more than 1,500 tools. Nexus is geared for automating tasks rapidly and broadly across sales, customer support and marketing operations. It can use multiple AI models and has a pay-as-you-go pricing model, so it's available and affordable.

MindStudio is another general-purpose platform for building your own custom AI tools and automations. It lets you pick from a variety of AI models and combine multiple data sources into your own custom AI assistants. MindStudio's tiered pricing plans, including a free option, means it's available for a range of needs and budgets. It's good for building AI assistants for specific jobs and tasks.

If you prefer a more open-source approach, Dify is a customizable foundation for generative AI applications. It includes tools for designing AI apps, secure data pipelines and model tuning. Dify offers customizable LLM agents and supports on-premise deployment for high availability and security. Its pricing tiers range from free to enterprise-level plans.