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📖 The AI Tool Bible

AI document Q&A

Editorial picks for "chat with documents ai".

48 tools

All RAG →
CL

Claude

Featured
Writing · Claude Opus / Sonnet
9.6

Anthropic's flagship assistant for long-form writing, analysis, and coding.

Freemium· Basic: $10 · Pro: $30 · Enterprise: $100long-form writingsummarization
G4

GPT-4o

Featured
Writing · GPT-4o
9.4

OpenAI's multimodal flagship behind ChatGPT.

Freemium· Basic: $10 · Pro: $30 · Enterprise: Contact salesgeneral writingsummarization
PI

Pinecone

Featured
RAG · Hosted vector DB (not an LLM)
8.8

Managed vector database for production-scale similarity search.

Freemium· Starter: Free · Builder: $20/month flat · Standard: $50/month min. usage · Enterprise: $500/month min. usagemanaged vector DBproduction RAG
LL

LlamaIndex

Featured
RAG · BYO (Claude / GPT / open)
8.7

Data framework for connecting LLMs to your data.

Freemium· Free open-source; LlamaCloud paidRAGdata ingestion
GA

Gemini Advanced

Writing · Gemini 2.5 Pro
9.0

Google's flagship — strong at math, long context, and Workspace integration.

Paid· $20/mo via Google One AI PremiumWorkspace integrationmath
DA

DataStax Astra DB

RAG · Bring-your-own embeddings; integrates with OpenAI, Cohere, Hugging Face, Mistral, NVIDIA NIM, and Vertex AI via server-side vectorize
8.6

Serverless vector and document database for production RAG and AI agents

Freemium· Small On-Demand: Contact sales · Medium (Balanced): Contact sales · Medium (Storage Optimized): Contact sales · Large (Balanced): Contact sales · Large (Storage Optimized): Contact salesRAG chatbot over enterprise documentsAgent long-term memory store
MA

MongoDB Atlas Vector Search

RAG · Bring-your-own embeddings (OpenAI, Cohere, open models); native Voyage AI embeddings and rerankers
8.6

Vector search built into the operational database you're already using.

Freemium· Free: $0 · Flex: Up to $30 · Dedicated: Starts at $56.94RAG over enterprise documentsProduct and content recommendation engines
QU

Quivr

RAG · Multi-model (OpenAI, Anthropic, Mistral, Gemma)
8.4

Open-source RAG framework for building custom AI assistants over your own documents in a few lines of Python.

Free· Open source (pip install quivr-core); pay only for LLM/vector-store usagedocument-qacustom-knowledge-base
WE

Weaviate

RAG · Hosted vector DB (not an LLM)
8.4

Open-source vector DB with hybrid search and modules.

Freemium· Free: $0 · Flex: $45 · Premium: $400self-hosted RAGhybrid search
LA

LangChain

RAG · BYO (any major LLM)
8.3

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

Freemium· Free open-source; LangSmith paidgeneral LLM appsRAG
MS

Msty

Writing · Multi-model (Ollama, Claude, GPT, Gemini, others)
8.2

Privacy-first desktop AI workspace that runs local and cloud models side by side.

Freemium· Free: $0 · Aurum: ? · Aurum Lifetime: ? · Enterprise & Teams: Talk to uslocal-llm-chatmulti-model-comparison
CH

Chroma

RAG · Hosted vector DB (not an LLM)
8.1

Embedded, developer-friendly vector store for Python.

Freemium· Starter: $0 · Team: $250 · Enterprise: Customprototypingembedded RAG
KI

Kimi

Writing · Kimi K2 (K2.5 / K2.6 / K2.7 Code)
8.1

Moonshot AI's chat assistant with long-context document analysis, coding agents, and deep research built in.

Freemium· Free web chat; API pay-as-you-go from ~$0.60/MTok inputlong-document analysisdeep research
NO

NotebookLM

RAG · Gemini 2.5
8.1

Google's source-grounded research notebook that turns your documents into chats, briefs, and AI-hosted podcasts.

Freemium· Free tier; Plus via Google One AI Premium ($19.99/mo) or Workspace add-ondocument Q&Aresearch synthesis
RA

RAGFlow

RAG · Multi-model
8.1

Open-source RAG engine with deep document parsing, hybrid search, and visual agent orchestration.

Freemium· Free tier; Starter $29/mo; Pro $129/mo; Enterprise customdocument-qaenterprise-search
AN

AnythingLLM

RAG · Multi-model
7.9

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

Freemium· Basic: $50/monthly · Pro: $99/monthly · Enterprise: Contact Usdocument-chatprivate-rag
KH

Khoj

Agents · Multi-model
7.9

Open-source personal AI that builds agents, searches your documents, and automates research across local files and the web.

Freemium· Free self-hosted; paid cloud tier on app.khoj.devpersonal-knowledge-baseagent-building
HA

Humata.ai

RAG · Multi-model
7.8

Chat-with-your-documents RAG tool with citation-backed answers across uploaded PDFs and files.

Freemium· Free: $0 · Expert: $9.99 · Team: $49 / user · Enterprise: customdocument-qaresearch-summarization
AG

Agentset

RAG · Multi-model (Claude, OpenAI, Google, xAI, Cohere, Mistral, DeepSeek)
7.3

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

Freemium· Free: $0 · Pro: $49 · Enterprise: Customdocument-qaagentic-search
FF

FinChat (Fiscal.ai)

RAG · Multi-model (proprietary finance-tuned copilot)
7.2

AI copilot for equity research that reads filings, transcripts, and KPI tables across 100,000+ public companies.

Freemium· Free; Pro $39/mo (annual) or $49/mo; Max and Enterprise API tiers aboveequity-researchearnings-call-analysis
ON

OneKE

RAG · Multi-model (OneKE-13B, LLaMA3, Qwen2.5, GPT, DeepSeek-R1)
7.2

Open-source multi-agent framework for schema-guided knowledge extraction from documents.

Free· Free, MIT-licensed; you pay for LLM API calls or self-hosted computeknowledge-graph-constructionnamed-entity-recognition
WE

WeKnora

RAG · Multi-model
7.2

Tencent's open-source RAG framework that turns raw documents into a queryable knowledge base, ReAct agent, and self-maintaining wiki.

Free· Free, open-source (self-hosted)document-qaenterprise-knowledge-base
EL

Elicit

RAG · Claude Opus 4.5
7.1

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

Freemium· Basic: Free · Plus: $11 · Pro: $39 · Scale: $89 · Enterprise: Customliterature-reviewsystematic-review
LA

LangExtract

RAG · Multi-model (Gemini, GPT-4/4o, Ollama-hosted local models)
7.1

Google's open-source Python library for LLM-driven structured extraction from unstructured text, with source-grounded outputs.

Free· Library is free (Apache-2.0); LLM API costs depend on chosen backendstructured-extractiondocument-parsing
OP

OpenDataLoader PDF

RAG
7.1

Open-source PDF parser built for RAG pipelines, with reading-order detection, table extraction, and bounding-box citations.

Freemium· Free (Apache 2.0); enterprise tier for PDF/UA export and visual editorpdf-parsingrag-preprocessing
AL

alphaXiv

RAG · Multi-model
7.0

AI reading layer over arXiv with grounded Q&A, auto-summaries, and line-by-line discussion on every preprint.

Free· Free, no signup requiredpaper-qaliterature-review
KO

Kotaemon

RAG · Multi-model (OpenAI, LlamaCPP, any OpenAI-compatible endpoint)
7.0

Open-source RAG UI for chatting with your own documents, locally or self-hosted.

Free· Free, open-source (MIT-style); self-hosted infrastructure costs onlydocument-qaprivate-rag
PA

PageIndex

RAG
7.0

Vectorless reasoning-based retrieval for long documents, with traceable, auditable answers.

Freemium· Free Try Now tier; enterprise pricing on requestdocument-qalong-pdf-retrieval
PR

PrivateGPT

RAG · Multi-model (BYO local LLM)
7.0

Production-ready, air-gapped RAG framework for querying your documents with local LLMs.

Freemium· OSS free; Zylon enterprise contract (contact sales)private-ragchat-with-documents
RB

RAGs by LlamaIndex

RAG · Multi-model (OpenAI, Anthropic, Replicate, HuggingFace)
7.0

Open-source Streamlit app that builds a custom RAG pipeline from a natural-language brief.

Free· Free, MIT-licensed; bring your own model/API keysnatural-language-rag-builderdocument-qa
SC

ScreenSnapAI

Writing · OpenAI / Anthropic (BYO key)
7.0

Native macOS screenshot tool that auto-names captures and lets you chat with an LLM about what's on screen.

Freemium· Free tier; Pro $20 one-time on Mac App Store (bring-your-own OpenAI/Anthropic key)screenshot-organizationauto-tagging
SU

Superduper

RAG · Multi-model
7.0

Enterprise AI agent orchestration that brings RAG and agents to your existing data stack without migration.

Enterprise· Free trial on Snowflake Marketplace; enterprise self-hosted pricing on requestin-database-ragagent-orchestration
CW

Chat With PDF by Copilot.us

RAG
6.9

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

Freemium· 7-day free trial; paid membership covers full app suitepdf-qadocument-summarization
HA

Haystack

RAG · Multi-model
6.9

Open-source Python framework from deepset for building production RAG pipelines and LLM agents.

Freemium· Open-source free; deepset Enterprise Support and AI Platform via salesragagents
RA

Refinder AI

RAG
6.9

Chat-native enterprise search and task automation hub that lives inside Slack and Google Chat.

Freemium· Free plan available; enterprise pricing on requestenterprise-searchslack-automation
SC

SciSpace

RAG · Multi-model
6.9

AI research assistant that turns dense PDFs and literature reviews into searchable, citation-backed answers.

Freemium· Premium: $20 · Advanced: $90 · Max: $200literature-reviewchat-with-pdf
AI

aiPDF

RAG
6.8

Chat-with-your-documents app that ingests PDFs, EPUBs, web pages and YouTube videos with cited answers.

Freemium· Playful: Free · Dynamic: $9/month · Flagship: $19/monthdocument-chatpdf-summarization
CH

ChatPDF

RAG · GPT-4o / GPT-4o-mini
6.8

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

Freemium· Basic: $10 · Pro: $20 · Enterprise: Contact salespdf-qadocument-summarization
EX

Explainpaper

RAG · Undisclosed (tiered basic vs. advanced)
6.8

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

Freemium· Free: $0/month · Pro: $16/month · Teams: Contact uspaper-readingresearch-summaries
GE

Genei

RAG · GPT-3 (per public site)
6.8

AI research assistant that summarizes PDFs and web pages and answers questions across your document library.

Freemium· Basic: £9.99 · PRO: £29.99 · Basic: £4.99 · PRO: £19.99pdf-summarizationresearch-assistant
DO

Docling

RAG · GraniteDocling 258M and other vision-language models

Open-source document parsing for AI: PDFs, Office files, audio and video into clean, structured Markdown/JSON

Free· Free and open source under MIT License. Hosted by the LF AI & Data Foundation; no paid tiers.RAG document ingestionPDF table extraction
GD

Google Drive MCP Server

MCP Servers

Read, list, and search your Google Drive from any MCP-compatible AI client.

Free· Free and open-source (MIT). Google Cloud/Drive API usage governed by Google's free quotas.Ground Claude in a folder of meeting notesPull the latest spec doc into a coding agent
NO

Notebooker

RAG · User-selectable: OpenAI, Anthropic, or local models (bring your own API key)

A cited-answers notebook that turns links, PDFs, audio and video into podcasts, flashcards, mindmaps and textbooks.

Freemium· Monthly: $5 · Yearly: ?Personal research library with cited Q&AStudy podcast generation from PDFs
ON

Onyx

RAG · LLM-agnostic — routes to OpenAI (GPT-4o/GPT-5), Anthropic Claude, Google Gemini, Azure OpenAI, AWS Bedrock, or local Ollama/vLLM models

Open-source AI chat connected to your docs, apps, and people

Freemium· Business: $20 · Enterprise: Contact usInternal knowledge-base chatbot over Confluence and Google DriveSupport-team assistant grounded in Zendesk tickets and help docs
RE

Reducto

RAG · In-house vision models combined with frontier LLMs (specific vendors undisclosed)

Enterprise-grade document parsing and extraction with citation-grounded structured output

Freemium· Standard: $19 · Growth: $49 · Enterprise: Contact salesRAG ingestion of complex PDFsContract field extraction
SH

Sharper

Agents

AI office assistant that turns your documents and connected apps into a cited, agentic knowledge base

Freemium· Free tier available via 'Start for free'; paid plans referenced on the pricing page but tier prices load dynamically and were not visible at review time.Cross-source internal knowledge searchCited research briefs
UI

Unstructured.io

RAG · In-house layout and table models plus optional OpenAI / Anthropic / Bedrock embeddings and enrichment

Turn unstructured enterprise documents into LLM-ready data

Freemium· Free: Free · Pay-As-You-Go: $0.03 / page · Business: CustomRAG document ingestionPDF and PPTX parsing
VA

Voyage AI

RAG · in-house (voyage-3.5, voyage-4 series, voyage-code-3, voyage-finance-2, voyage-law-2, voyage-multimodal-3.5, voyage-context-3, rerank-2.5)

State-of-the-art embedding models and rerankers purpose-built for retrieval and RAG.

Freemium· Free tier: 200M free text tokens per account for current models (50M for older specialized). Text embeddings $0.00002–$0.00018 per 1K tokens depending on model tier. Rerankers $0.00002–$0.00005 per 1K tokens after 200M free. Multimodal $0.12 per 1M text tokens + $0.60 per 1B pixels. Batch API 33% discount. File storage $0.05/GB/month.Production RAG chatbot over proprietary docsTwo-stage retrieval with embed + rerank