RAGstack – private ChatGPT for enterprise VPCs, built with Llama 2
Hey hacker news, We’re the cofounders at Psychic.dev (http://psychic.dev) where we help companies connect LLMs to private data. With the launch of Llama 2, we think it’s finally viable to self-host an internal application that’s on-par with ChatGPT, so we did exactly that and made it an open source project. We also included a vector DB and API server so you can upload files and connect Llama 2 to your own data. The RAG in RAGstack stands for Retrieval Augmented Generation, a technique where the capabilities of a large language model (LLM) are augmented by retrieving information…
RAGstack – private ChatGPT for enterprise VPCs, built with Llama 2 launched on July 20, 2023 with 84 votes, #1,020 of 4,347 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
RAGstack is an open-source platform that enables enterprises to deploy a ChatGPT-like application within their own virtual private cloud using Llama 2. It includes a vector database and API server, allowing organizations to upload files and connect the language model to proprietary data through retrieval augmented generation. The tool is designed for companies that need to keep sensitive information private while leveraging large language model capabilities for internal applications.
written from the facts on this page · September 2026
From the sources
🤖 Deploy a private ChatGPT alternative hosted within your VPC. 🔮 Connect it to your organization's knowledge base and use it as a corporate oracle. Supports open-source LLMs like Llama 2, Falcon, and GPT4All. - finic-ai/rag-stack
In the maker’s words, at launch
Hey hacker news, We’re the cofounders at Psychic.dev (http://psychic.dev) where we help companies connect LLMs to private data. With the launch of Llama 2, we think it’s finally viable to self-host an internal application that’s on-par with ChatGPT, so we did exactly that and made it an open source project.…
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