---
title: "Blog: Production RAG & Grounded Answer Engineering | Calypso"
canonical_url: "https://www.calypso.so/blog"
last_updated: "2026-06-17T23:02:55.131Z"
meta:
  description: "Engineering notes, guides, and product thinking on building production RAG: grounded answers, Gemini File Search, retrieval orchestration, and evaluation."
  keywords: "Calypso RAG blog, production RAG, Gemini File Search, grounded answers, RAG engineering"
  "og:description": "Engineering notes, guides, and product thinking on building production RAG: grounded answers, Gemini File Search, retrieval orchestration, and evaluation."
  "og:title": "Blog: Production RAG & Grounded Answer Engineering | Calypso"
  "twitter:description": "Engineering notes, guides, and product thinking on building production RAG: grounded answers, Gemini File Search, retrieval orchestration, and evaluation."
  "twitter:title": "Blog: Production RAG & Grounded Answer Engineering | Calypso"
---

Calypso RAG home

# **Blog **

Engineering notes, guides, and product thinking on building production RAG: grounded answers, Gemini File Search, retrieval orchestration, and evaluation.

**Current view **## **3 articles available**[NewEngineering**June 17, 2026**<h3>**Production RAG Is an Agent Harness Problem, Not a Vector Database Problem**</h3>Learn why production RAG needs a harness around retrieval, conversation, business intent, latency, evidence, planning, and action instead of only a vector database and prompt pipeline.**Production RAG****Agent Harness****Agentic RAG**10 min read** Read article **](https://www.calypso.so/blog/production-rag-agent-harness-vector-database) [NewGuides**June 16, 2026**<h3>**Multimodal Retrieval-Augmented Generation and Multimodal RAG Agents: The Complete 2026 Guide**</h3>Learn how multimodal retrieval-augmented generation extends classic RAG across text, images, layouts, tables, audio, video, and agentic workflows.**Multimodal RAG****RAG Agents****Citations**5 min read** Read article **](https://www.calypso.so/blog/multimodal-rag-agents-guide) [GuideGuides**June 15, 2026**<h3>**The Complete Guide to Gemini File Search: Multimodal RAG with the Gemini API File Search Tool**</h3>An in-depth, practical guide to the Gemini API File Search tool — how managed Gemini File Search RAG works end to end, and how multimodal retrieval handles PDFs, docs, images, screenshots, charts, diagrams, metadata, and citations in production.**Gemini File Search****Multimodal RAG****Citations**13 min read** Read article **](https://www.calypso.so/blog/gemini-file-search-complete-2026-guide)**Put Calypso RAG to work**## **Turn grounded answers into a production-ready product surface.** Use one retrieval layer across your website, PDFs, docs, workflows, and internal tools without losing citations, trust, or speed to launch. [**See live demo **](https://www.calypso.so/demos) [**Get Started for Free **](https://rag.calypso.so/join)