2026 Best AI Search Engine tools

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OpenSearch

AI Search Engine

OpenSearch is a community-driven, Apache 2.0-licensed open source search and analytics suite for ingesting, searching, visualizing, and analyzing data. It supports application search, observability, security analytics, and machine learning workflows.

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turbopuffer

AI Search Engine

turbopuffer is an object-storage-native search engine for vector, full-text, hybrid, and regex search. It helps AI, search, and data teams retrieve content from large document collections with filtering, ranking, and scalable namespace-based storage.

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AlphaSense

AI Search Engine

AlphaSense is an AI-powered market intelligence and research platform for finance, strategy, corporate, and professional services teams. It combines premium business content, internal company documents, search, analysis, and workflow outputs in one platform.