# How to Build Your First Knowledge Graph With Claude Opus 5.5

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How to Build Your First Knowledge Graph With Claude Opus 5.5

Turn five scattered documents into a connected visual map, with sources you can trace and errors you can correct

ChatGPT for All

Sep 27

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You know the answer exists somewhere. It may be inside last month’s meeting notes, a project plan, a PDF you saved, or a follow-up message you can no longer find.

The problem is not that you lack information. The problem is that your information does not know how it connects.

A folder can tell you where a document lives. It cannot easily show that Sarah leads the support project, the project depends on the Helpdesk API, and three different notes all recommend human approval. A knowledge graph can.

Claude Opus 5.5 makes this project more practical because Anthropic built it for long-running coding and knowledge work. Its large context window can examine substantial source material, while its structured output can help turn names, projects, topics, and evidence into clean files.

But a graph that looks organized can still contain invented connections. The real skill is not drawing circles and arrows. It is keeping every important relationship tied to the sentence that supports it.

Inside: a five-document practice set, six copyable prompts, verified CSV templates, complete visualization code, five failure tests, and a working graph you can open in your browser...

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