Top Semantic Search APIs in 2026 for AI-Driven Applications

Semantic search APIs represent a cutting-edge AI-powered approach to information retrieval, transcending simple keyword matching by utilizing natural language processing (NLP) and vector embeddings to understand the meaning and intent behind queries. These APIs can be categorized into SERP-based and database-based types, with the former retrieving information from external search engines and the latter relying on internal data sources for conceptually similar results. Key use cases include enhancing e-commerce product discovery, supporting technical troubleshooting, and improving enterprise knowledge discovery. When evaluating semantic search APIs, important factors to consider include data sources, scalability, performance, integrations, compliance, and pricing. Notable API providers like Bright Data, Exa, and Cohere offer various capabilities, such as integrating with AI systems and supporting large-scale, accurate semantic searches, with Bright Data standing out due to its robust infrastructure and versatile solutions for both SERP-based and database-based semantic searches.