Question: Is there a search engine API that supports multiple search engines like Google, Bing, and Yahoo?

If you're looking for a search engine API that supports multiple search engines like Google, Bing and Yahoo, SerpApi is a mature option. It offers real-time access to search results from Google, Bing, DuckDuckGo and Yahoo, as well as other specialty APIs like Google Maps and Shopping. SerpApi offers features like proxy handling and advanced data parsing, and is used for tasks like SEO, local SEO and background check automation. Pricing tiers range from a free plan to enterprise plans, so it can accommodate a variety of use cases.

Another option is Algolia, an AI-powered search infrastructure for enterprises and developers. It supports multiple search engines and offers a range of tools for building personalized search experiences. Algolia's features include AI search, dynamic re-ranking and a flexible pricing model, and is used in a variety of industries including headless commerce and mobile search. It's easy to integrate, with API clients available for many languages and frameworks.

For a more AI-focused approach, Vespa marries AI with big data to offer a unified search engine and vector database. It supports vector search, lexical search and search in structured data, making it a good fit for applications that need fast and efficient search and recommendation. Vespa also supports scalable machine-learned model inference and integrates with many machine learning tools for high performance and low latency.