UsefulAI is an online service that allows you to easily add AI features to your product. It can convert speech to text, detect objects, and analyze sentiment. With both free and paid plans available, you can access the service via API. The only obstacle is the requirement to sign in with Google. Find the perfect AI solution for your needs, test it using the playground, and seamlessly integrate it into your product using a single API. No credit card is required to get started.