Best On-Premises Reranking Models of 2026

Voyage AI is an advanced AI platform focused on improving search and retrieval performance for unstructured data. It delivers high-accuracy embedding models and rerankers that significantly enhance RAG pipelines. The platform supports multiple model types, including general-purpose, industry-specific, and fully customized company models. These models are engineered to retrieve the most relevant information while keeping inference and storage costs low. Voyage AI achieves this through low-dimensional vectors that reduce vector database overhead. Its models also offer fast inference speeds without sacrificing accuracy. Long-context capabilities allow applications to process large documents more effectively. Voyage AI is designed to plug seamlessly into existing AI stacks, working with any vector database or LLM. Flexible deployment options include API access, major cloud providers, and custom deployments. As a result, Voyage AI helps teams build more reliable, scalable, and cost-efficient AI systems.

Mixedbread is an advanced AI search engine that simplifies the creation of robust AI search and Retrieval-Augmented Generation (RAG) applications for users. It delivers a comprehensive AI search solution, featuring vector storage, models for embedding and reranking, as well as tools for document parsing. With Mixedbread, users can effortlessly convert unstructured data into smart search functionalities that enhance AI agents, chatbots, and knowledge management systems, all while minimizing complexity. The platform seamlessly integrates with popular services such as Google Drive, SharePoint, Notion, and Slack. Its vector storage capabilities allow users to establish operational search engines in just minutes and support a diverse range of over 100 languages. Mixedbread's embedding and reranking models have garnered more than 50 million downloads, demonstrating superior performance to OpenAI in both semantic search and RAG applications, all while being open-source and economically viable. Additionally, the document parser efficiently extracts text, tables, and layouts from a variety of formats, including PDFs and images, yielding clean, AI-compatible content that requires no manual intervention. This makes Mixedbread an ideal choice for those seeking to harness the power of AI in their search applications.