Your research library, fully conversational.

LumenAI is the AI chat app built for serious research, offering a powerful alternative to NotebookLM with real, multi-threaded chat functionality.

What it does

Upload an entire library of PDFs, research papers, and textbooks without file size limits. LumenAI provides intelligent answers and enables continuous, multi-threaded conversations with full context awareness across your documents. Unlike other tools, it offers true chat functionality without usage quotas, allowing for unlimited interaction with your research.

Key features

Unlimited Document Support — Upload any number of PDFs, research papers, and textbooks with no file size restrictions.
True Chat Functionality — Engage in real conversations across multiple threads with full context awareness, unlike limited interfaces.
No Usage Quotas — Never hit message limits again; enjoy unrestricted interaction with your research library.
Bring Your Own API Key (BYOK) — Use your own API key for enhanced privacy, transparent costs, and control over usage.
Advanced RAG Pipeline — Hybrid search (vector + keyword) with reranking ensures the most relevant answers are delivered every time.
Code & LaTeX Formatting — Features beautiful syntax highlighting for code and native LaTeX rendering for mathematical equations.
Multiple Workspaces — Organize documents by project, course, or topic and switch contexts seamlessly.
Model Selection Per Turn — Choose different LLMs (e.g., GPT-4, Claude) for different questions to optimize analysis and writing.
Multimodal Inputs — Attach images via select, drag-and-drop, or paste, and use vision-capable models for image analysis.

Use cases

Researchers analyzing extensive literature reviews and experimental data.
Students managing multiple course readings and study materials.
Knowledge workers synthesizing information from various reports and documents.

What makes it different

LumenAI provides a truly conversational research experience with unlimited chat and BYOK for privacy and cost control, setting it apart from tools with usage limits and less flexible chat capabilities.

Phuong Lam Nguyen

Projects

LumenAI

Phuong Lam Nguyen

Projects

LumenAI

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