Launching a new home-grown embedding LLM for RAG
Hi HN! Vectara is a "batteries included" retrieval augmented generation platform. You can upload your rich text documents like PDFs, HTML pages, word docs, etc, or semi-structured JSON and Vectara handles the text and metadata extraction, segmentation, vector embedding, and vector storage, and keyword storage. You can ask a question or perform a search in the UI or via our APIs and Vectara will automatically handle the vectorization, structured metadata filtering, vector+keyword retrieval, hybrid blending, and generative summarization of the results. We're focusing on building and…
Launching a new home-grown embedding LLM for RAG launched on September 28, 2023 with 12 votes, #1,472 of 4,228 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 3 years on.
In plain words
Vectara is a retrieval augmented generation platform that handles document processing, vector embedding, and storage for users who want to build AI applications. Users upload documents like PDFs and Word files, and the platform automatically extracts text, segments content, creates embeddings, and stores them. Through APIs or a web interface, users can search documents and retrieve summarized answers. The platform combines vector and keyword search methods to improve retrieval accuracy.
written from the facts on this page · September 2026
From the sources
We’re happy to announce the release of Vectara’s new embedding model, Boomerang. In this blog post, we’re going to dive into what that means, and why it’s important: both from a traditional search perspective as well as a Grounded Generation (or Retrieval Augmented Generation) perspective. When we talk about search (the “retrieval” in retrieval augmented generation), it’s important that the retrieval engine finds the right things . Traditional keyword-based systems do this by following language rules like stemming , synonym expansion, and other language-dependent rules, and then using an inverted index to retrieve the related text. For example, let’s say we were to index the following…from vectara.com
In the maker’s words, at launch
Hi HN! Vectara is a "batteries included" retrieval augmented generation platform. You can upload your rich text documents like PDFs, HTML pages, word docs, etc, or semi-structured JSON and Vectara handles the text and metadata extraction, segmentation, vector embedding, and vector storage, and keyword storage. You…
Does a similar job
all alternatives →
Demystifying Advanced RAG Pipelines2023 · github.com · ▲131I've built an advanced RAG (Retrieval-Augmented Generation) pipeline from scratch to demystify the complex mechanics of modern LLM-powered Question Answering systems. This repository features: -- An implementation of a sub-question query engine from scratch to answer complex user questions. -- Illustrative explanations that unveil the inner workings of the system. -- An analysis of the challenges I faced while working with the system, like prompt engineering and cost estimation. -- Qualitative comparison with similar frameworks like LlamaIndex, offering a broader perspective. Key Takeaway:…
- IMI made a website to semantically search ArXiv papers2024 · papermatch.mitanshu.tech · ▲324
As a grad student (and an ADHDer), I had trouble doing literature review systematically. To combat this, I made a website that finds similar papers using the meaning of the thing I am looking for. I used MixedBread's [^1] embedding model to generate vectors from the abstracts. I store and search similar vectors using Milvus [^2] and finally use Gradio [^3] to serve the frontend. I update the vector database weekly by pulling the metadata dataset from Kaggle [^4]. To speed up the search process on my free oracle instance, I binarise the embeddings and use Hamming distance as a metric. I would…


PageIndex – Vectorless RAG2025 · github.com · ▲192Not all improvements come from adding complexity — sometimes it's about removing it. PageIndex takes a different approach to RAG. Instead of relying on vector databases or artificial chunking, it builds a hierarchical tree structure from documents and uses reasoning-based tree search to locate the most relevant sections. This mirrors how humans approach reading: navigating through sections and context rather than matching embeddings. As a result, the retrieval feels transparent, structured, and explainable. It moves RAG away from approximate "semantic vibes" and toward explicit reasoning…

More ai this month
the category →



Paintings by AI models: programs run through a simulation of oil paint.
AI · 22d ago · stillwet.art

FastRouter.ai▲364Route requests to the right LLM for cost, latency & quality
AI · 23d ago · fastrouter.ai
Source: Show HN post ↗ · launch text quoted in part