RAG

Pinecone

Featured

RAG · Hosted vector DB (not an LLM)

8.8

Managed vector database for production-scale similarity search.

LlamaIndex

Featured

RAG · BYO (Claude / GPT / open)

8.7

Data framework for connecting LLMs to your data.

Weaviate

RAG · Hosted vector DB (not an LLM)

8.4

Open-source vector DB with hybrid search and modules.

LangChain

RAG · BYO (any major LLM)

8.3

The broad LLM application framework — chains, agents, retrievers.

Vespa

RAG · Hosted search engine (not an LLM)

8.2

Yahoo's open-source search engine with vector + sparse retrieval.

Chroma

RAG · Hosted vector DB (not an LLM)

8.1

Embedded, developer-friendly vector store for Python.

Agentset

RAG · Multi-model (Claude, OpenAI, Google, xAI, Cohere, Mistral, DeepSeek)

Production-ready RAG infrastructure with agentic search, citations, and model-agnostic plumbing.

AnythingLLM

RAG · Multi-model

Open-source desktop and self-hosted app that turns your documents into a private chat-and-agent workspace.

BGE (BAAI General Embedding)

RAG · BGE / bge-m3 / bge-reranker

Open-source embedding and reranker models from BAAI that anchor a huge share of production RAG stacks.

Chat With PDF by Copilot.us

RAG

Conversational PDF Q&A bundled into a multi-app productivity membership.

ChatPDF

RAG · GPT-4o / GPT-4o-mini

Conversational Q&A over PDFs and other documents with citation-backed answers.

CocoIndex

RAG · Bring-your-own (embeddings + LLM)

Open-source incremental data framework that keeps RAG indexes and agent context continuously fresh.

Cognee

RAG · Multi-model (Claude, OpenAI, others)

Open-source graph-memory layer that gives AI agents persistent, queryable context across sessions.

Cohere

RAG · Command, Embed, Rerank, Transcribe (proprietary)

Enterprise-grade LLM platform built for private, secure, and customizable deployment.

Context Data

RAG · Multi-model

Enterprise data platform for deploying private RAG pipelines without infrastructure plumbing.

Cosmos

RAG

AI-powered archive search and reel curation for video production companies.

Cube

RAG · Multi-model

Semantic layer that grounds LLM agents in your real business metrics instead of letting them hallucinate SQL.

Databricks Vector Search

RAG · Multi-model (BYO embeddings or Databricks-hosted)

Managed hybrid vector search that lives inside the Databricks lakehouse and auto-syncs with your source tables.

DeepSearcher

RAG · Multi-model (DeepSeek, OpenAI o1/o3-mini, Claude, Llama, others)

Open-source agentic RAG framework for private enterprise data, built by the Zilliz/Milvus team.

Elicit

RAG · Claude Opus 4.5

AI research assistant that searches, screens, and extracts data from 138M+ academic papers at scale.

Emergent Mind

RAG · Undisclosed

AI-curated arXiv discovery layer that summarizes frontier papers and aggregates social discussion around them.

Epsilla

RAG · Multi-model

Agent-as-a-Service platform with managed RAG and a no-code builder for vertical enterprise AI.

Exa

RAG · Proprietary neural + keyword search

Web search API built for AI agents, with structured outputs and token-efficient highlights.

Explainpaper

RAG · Undisclosed (tiered basic vs. advanced)

AI reading companion that decodes dense academic papers by highlighting and chatting with the PDF.