Reliable ingestion
Upload PDFs, office files, spreadsheets, text, web files, and images into one session-aware pipeline.
Production-ready Advanced RAG
Nexus AI — Advanced RAG for document intelligence.
Nexus AI gives your RAG system a polished product surface with a real playground for document upload, grounded chat, retrieval traces, and source review.
25+
Supported file types
25 MB
Upload limit
Hybrid
Dense + BM25 retrieval
RAG playground
Ask the indexed document
What are the key findings and which sources support them?
Retrieval trace
query rewrite82%
dense search86%
bm25 match90%
rerank94%
Grounded response
The answer is generated only after retrieving relevant document chunks and source metadata for review.
source 1source 2confidence high
Product surface
Everything a RAG demo needs to feel production-grade.
The experience is focused on the core workflow: upload content, query against a session, review the answer, and inspect sources.
Hybrid retrieval
Use dense search, BM25, query rewriting, and reranking to improve recall before generation.
Grounded answers
Generate answers from retrieved context and inspect source payloads in the playground.
Math-aware reasoning
Detect numeric questions and compute against document context before returning the final answer.
Workflow
A clean path from raw document to source-backed answer.
The frontend follows your FastAPI contract directly: `/upload` processes the file, and `/chat` answers against the same user_id and session.
01
Upload
02
Parse
03
Index
04
Retrieve
05
Answer
Playground
Test the RAG system with real files and real sessions.
The playground includes persistent session workspaces, file upload, grounded chat, loading states, API health, returned source inspection, and responsive desktop/mobile layout.
Ready to validate retrieval quality?
Upload a document, ask questions, and inspect the evidence.