Question: I need a REST API that simplifies the integration of AI models into my application.

For your REST API needs, AIML API is a good all-purpose option. It exposes more than 100 AI models through a single API without requiring you to set up and maintain servers. With serverless inference, pay-per-token pricing and 99% uptime, it's designed to be fast, reliable and economical. It's good for high-scale projects that benefit from a wide range of AI models.

Another good option is Humaan, which offers a range of APIs to bring human smarts to your apps. It includes the latest foundation models for tasks like document extraction and sentiment analysis, and a REST API for easy integration. Humaan also offers a no-code interface for fine tuning models, a useful option for developers who want to use AI without a lot of programming. Its tiered pricing plans range from a free Personal plan.

If you want a service that automates the entire AI development and integration process, Unbody is worth a look. It links your private data to a range of AI models so you can build chatbots, semantic search and content generation tools. Unbody offers a simple interface with GraphQL API endpoints or SDKs so you can easily incorporate AI abilities. It offers three pricing tiers, including a free plan, so it's a good option.

Last, Eden AI offers a single interface to a range of AI services, making it easier to integrate multiple AI models into your business processes. It supports generative AI, translation, text and image analysis and other tasks. Eden AI's pay-as-you-go pricing model and unified API make it a good option for businesses that want to simplify their operations and cut costs without sacrificing performance.