# Factagora

> Factagora is a verifiable knowledge layer for AI. It turns unstructured text into structured, time-stamped, source-linked facts (FactBlocks) connected in a Temporal Knowledge Graph (TKG), so AI can answer not just what is true, but when it was true and why it happened.

Factagora sits on top of the LLM, vector database, and RAG pipeline you already run as a grounding and verification layer, without a rebuild. It complements vector search rather than replacing it: embeddings find what's similar, Factagora verifies what's true right now and why. It's built for researchers, developers, finance, legal/healthcare, and media/journalism teams who need to verify claims and citations before they reach a decision.

## Docs

- [Documentation](https://docs.factagora.com): Full Factagora API reference, guides, and integration docs
- [API introduction](https://docs.factagora.com/api-reference/introduction): API overview, built on a Temporal Knowledge Graph
- [Fact Checker](https://docs.factagora.com/api-reference/fact-checker): Verify the truthfulness of a claim with AI verdicts and supporting evidence
- [Evidence Finder](https://docs.factagora.com/api-reference/evidence-finder): Find credibility-scored, stance-labeled evidence for any topic
- [Fact Search](https://docs.factagora.com/api-reference/fact-search): Search recent news articles from global sources
- [Chrome Extension (DeepVerify)](https://docs.factagora.com/guides/chrome-extension/setup): Word-by-word fact verification directly on any webpage

## Product

- [Factagora](https://factagora.com): Homepage — product overview and playground
- [Pricing](https://factagora.com/en/pricing): Plans and credit pricing
- [DeepVerify](https://factagora.com/en/deepverify): Chrome extension product page
- [Playground](https://factagora.com/en/playground/home): Try the API with a free key

## Blog

- [Why LLMs Cite Sources That Don't Exist](https://factagora.com/en/blog/why-llms-cite-sources-that-dont-exist): Fabricated citations aren't a rare glitch — they're a predictable result of how language models generate text. Here's why it happens and what actually catches it.
- [What Is a FactBlock?](https://factagora.com/en/blog/what-is-a-factblock): The smallest unit of trusted knowledge in Factagora's Temporal Knowledge Graph — how unstructured text becomes a time-stamped, source-linked, verifiable fact.
- [RAG Doesn't Cure Hallucinations: Here's What It Actually Fixes](https://factagora.com/en/blog/rag-does-not-cure-hallucinations): Retrieval-augmented generation reduces hallucinations, but it doesn't eliminate them. Here's why similarity search still lets false or outdated claims through, and what a verification layer adds on top.
- [Make, Verify, Own](https://factagora.com/en/blog/make-verify-own): AI hands down judgment but never bears the consequences. Founder Randy Baek on why Factagora is building the missing layer — a place where a judgment is made, graded by reality, and owned by whoever staked it.
- [Why I Started Factagora](https://factagora.com/en/blog/why-i-started-factagora): Founder Randy Baek on the Sewol ferry disaster, a line from Wittgenstein he never forgot, and why Factagora narrowed its mission to one database that gets time and causality right.
- [Chatbot-styled Legal Research Assistant Powered by Factagora's Knowledge Management Framework](https://factagora.com/en/blog/chatbot-styled-legal-research-assistant): A case study on how Shin & Kim LLC uses FactBlock and Source of Truth to deliver verifiable legal research. 299 professionals adopted the system with 75% reporting major time savings.
- [Fact-verified AI for Financial Intelligence with FactBlock and DeepVerify](https://factagora.com/en/blog/fact-verified-ai-for-financial-intelligence): A Source-of-Truth approach using SEC filings to produce explainable, trustworthy underwriting insights. Achieved Z-score of +1.31 across accuracy metrics.

## Optional

- [About](https://factagora.com/en/company/about-us): Company and team
- [Terms of Service](https://factagora.com/en/terms)
- [Privacy Policy](https://factagora.com/en/privacy)