Called the Wikidata Embedding Project, the system applies a vector-based semantic search — a technique that helps computers understand the meaning and relationships between words — to the existing data on Wikipedia and its sister platforms, consisting of nearly 120 million entries.

Combined with new support for the Model Context Protocol (MCP), a standard that helps AI systems communicate with data sources, the project makes the data more accessible to natural language queries from LLMs.

The project was undertaken by Wikimedia’s German branch in collaboration with the neural search company Jina.AI and DataStax, a real-time training-data company owned by IBM.

Wikidata has offered machine-readable data from Wikimedia properties for years, but the preexisting tools only allowed for keyword searches and SPARQL queries, a specialized query language. The new system will work better with retrieval-augmented generation (RAG) systems that allow AI models to pull in external information, giving developers a chance to ground their models in knowledge verified by Wikipedia editors.

The data is also structured to provide crucial semantic context. Querying the database for the word “scientist,” for instance, will produce lists of prominent nuclear scientists and scientists who worked at Bell Labs. There are also translations of the word “scientist” into different languages, a Wikimedia-cleared image of scientists at work, and extrapolations to related concepts like “researcher” and “scholar.”

The database is publicly accessible on Toolforge. Wikidata is also hosting a webinar for interested developers on October 9.

The new project comes as AI developers are scrambling for high-quality data sources that can be used to fine-tune models. The training systems have become more sophisticated — often assembled as complex training environments rather than simple datasets — but they still require closely curated data to function well. For deployments that require high accuracy, the need for reliable data is particularly urgent, and while some might look down on Wikipedia, its data is significantly more fact-oriented than catchall datasets like the Common Crawl, which is a massive collection of web pages scraped from across the internet.

In some cases, the push for high-quality data can have expensive consequences for AI labs. In August, Anthropic offered to settle a lawsuit with a group of authors whose works had been used as training material, by agreeing to pay $1.5 billion to end any claims of wrongdoing.

In a statement to the press, Wikidata AI project manager Philippe Saadé emphasized his project’s independence from major AI labs or large tech companies. “This Embedding Project launch shows that powerful AI doesn’t have to be controlled by a handful of companies,” Saadé told reporters. “It can be open, collaborative, and built to serve everyone.”