Overview

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This interface presents GPTKB v1.5 (Hu et al. arXiv, 2025b), a large general-domain knowledge base (KB) entirely from a large language model (LLM). It demonstrates the feasibility of large-scale KB construction from LLMs, while highlighting specific challenges arising around entity recognition, entity and property canonicalization, and taxonomy construction (Hu et al. ACL, 2025a).

Based on GPT-4.1, GPTKB v1.5 contains 100 million triples for more than 6.1 million entities, at a cost 10x less than previous KBC projects. We also provide GPTKB v1.1 for download.

GPTKB is a landmark for two fields:

• For NLP, for the first time, it provides constructive insights into the knowledge (or beliefs) of LLMs.
• For the Semantic Web, it shows novel ways forward for the long-standing challenge of general-domain KB construction.

Using the search field, you can find entities by name, and browse their triples. Alternatively, you can write SPARQL queries or download the whole KB as a TTL file. Paper and code are also available.