Question: Can you suggest a solution that allows me to build custom workflows with AI-powered steps and human-in-the-loop approvals?

For creating custom workflows with AI-powered actions and human-in-the-loop approvals, Relay is a good all-purpose option. It can be integrated with many tools and has sophisticated workflow abilities like paths, iterators and AI actions. The human-in-the-loop actions let team members approve, make decisions and contribute data, and it's designed for teams of any size. Relay has a free plan and flexible pricing.

Another option is AirOps, which marries customer data with more than 40 AI models to help businesses grow in many areas. It has scalable workflows with error tracking and human oversight, and can be deployed with Zapier and webhooks. AirOps is geared for SEO, SEM, content creation and marketplace optimization, and offers a variety of pricing tiers for different businesses.

Pipedream is another option if you need an integration platform that can handle low-level code control and no-code interfaces. It has access to more than 2,100 APIs and supports a variety of AI services, so it's good for more complex workflow automation. Pipedream's instant deployment and broad API support make it a good option for developers and nontechnical people.

For a no-code approach, Respell has a drag-and-drop editor and natural language workflows. It can be integrated with AI models and with tools like Notion and Salesforce, so it's good for many business tasks. Respell offers a free plan with 25 Spell runs per month and paid plans starting at $19.99/month, so it's good for businesses of many sizes.