Best TopK Alternatives in 2025
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OceanBase seekdb is an open-source, AI-native search database that unifies relational, vector, text, JSON and GIS in a single engine, enabling hybrid search and in-database AI workflows.
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VectorDB is a simple, lightweight, fully local, end-to-end solution for using embeddings-based text retrieval.
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DeepSearcher: AI knowledge management for private enterprise data. Get secure, accurate answers & insights from your internal documents with flexible LLMs.
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Spykio: Get truly relevant LLM answers. Context-aware retrieval beyond vector search. Accurate, insightful results.
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SoTA production-ready AI retrieval system. Agentic Retrieval-Augmented Generation (RAG) with a RESTful API.
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Use managed or self-hosted vector databases to give LLMs the ability to work on YOUR data & context.
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WeKnora: Unlock secure, accurate insights from your private documents. Build a powerful AI knowledge base with full control. Open-source RAG.
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Unlock hidden intelligence from all your documents with Search+ AI. Analyze massive PDF collections, uncover patterns, and get verifiable answers with citations.
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With Searchbase Cloud building your search experience is as easy as connecting your data source, building your query with our visual helper, and integrating it with your application by calling the query.
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DeepKE: Unified toolkit for high-precision Knowledge Extraction. Conquer low-resource, multimodal, & document-level data to build robust Knowledge Graphs.
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Rerank 3 is an advanced model optimized for enterprise search and retrieval assistance generation (RAG) systems.
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Build vector search and hybrid search with Elasticsearch's open source vector database — from the leaders in BM25 text search. Try Elasticsearch's vector database, free....
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turbopuffer: Scale enterprise search to petabytes. Get fast, cost-effective hybrid (vector & full-text) search, uniquely built on object storage.
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Vearch: Hybrid vector search database. Combine similarity & scalar filters for precise AI results. Scale effortlessly. Python/Go SDKs.
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Frustrated with the accuracy of vector-based RAG on long professional documents?You need a reasoning-native RAG system without vector DBs.
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The vector database that extends the knowledge of Generative AI applications with contextual search at scale.
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Discover how Analytics to Elevate Semantic Search can optimize embedded documents, improve search results, and enhance user experiences.
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Pinecone is the leading AI infrastructure for building accurate, secure, and scalable AI applications. Use Pinecone Database to store and search vector data at scale, or start with Pinecone Assistant to get a RAG application running in minutes.
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Making accurate decisions is difficult without trusted, connected and shared data. We help turn your data into a competitive advantage with Generative AI and seamless Large Language Model integration.
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Multimodal AI-powered Search with Skm.ai. From unstructured data to deep understanding. We offer Multilingual + Multimodal Search Dive deep into your data.
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Solve AI hallucinations. Vectorize powers accurate, real-time AI agents & RAG pipelines with all your organizational data, including complex documents.
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Qdrant is a vector database for storing, searching, and managing high - dimensional vectors. It offers efficient storage, fast similarity search, scalability, and rich API. Ideal for AI, ML, and NLP applications. Click to learn more!
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AI-powered search API. Build scalable search, recommendations & RAG with Trieve. Hybrid search, fine-tuning, & self-hosting options. Try it free!
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Build fast, intuitive search with Meilisearch. Open-source, AI-ready, & developer-first. Sub-50ms results. Cloud or self-hosted.
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Superlinked is a Python framework for AI Engineers building high-performance search & recommendation applications that combine structured and unstructured data.
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Infinity is a cutting-edge AI-native database that provides a wide range of search capabilities for rich data types such as dense vector, sparse vector, tensor, full-text, and structured data. It provides robust support for various LLM applications, including search, recommenders, question-answering, conversational AI, copilot, content generation, and many more RAG (Retrieval-augmented Generation) applications.
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Knowledge Graph Studio: Build reliable, accurate Agentic RAG & AI systems. Open-source platform for modular knowledge graphs & hybrid search, combining all your data.
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LanceDB: Blazing-fast vector search & multimodal data lakehouse for AI. Unify petabyte-scale data to build & train production-ready AI apps.
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GoSearch: AI enterprise search & agents. Unify knowledge, automate workflows, & get secure, real-time insights across 100+ apps.
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ApertureDB: Simplify multimodal AI data. Fast vector search, knowledge graphs, data augmentation. Build smarter AI applications faster.