Linkup is reimagining web search for the AI era, where the primary consumer of search results is increasingly an AI agent rather than a human clicking through blue links. Founded in 2024 and based in Paris, Linkup has built a web search API designed from the ground up for large language models and autonomous agents. Its premise is that AI systems need a fundamentally different interface to the web: not a ranked list of pages to read, but precise, verifiable facts they can reason over.
The core of Linkup's technology is proprietary indexing that breaks the web down into what the company calls 'atoms of information', individual facts and discrete pieces of knowledge. Each atom is stored with its source, a timestamp, and credibility markers, so an AI consuming the data can ground its answers, cite sources, and weigh reliability. This structure addresses two persistent problems with AI and the web: hallucination from ungrounded generation, and stale knowledge from models trained on fixed snapshots.
Linkup positions its API as infrastructure for any AI product that needs live, trustworthy web access, from research assistants and agents to enterprise applications. The company launched Linkup /fast, which it describes as a sub-second, highly accurate web search API, emphasizing the latency and accuracy requirements of real-time agentic workflows. Since launching in late 2024, it has gained hundreds of customers, including AI companies like Artisan and large enterprises like KPMG.
The founding team brings relevant depth: CEO Philippe Mizrahi (ex-Lyft and Amundsen), COO Boris Toledano (ex-McKinsey), and CTO Denis Charrier, who previously built one of Europe's first vector search engines at Niland, later acquired by Spotify. Linkup first raised a EUR 3 million round led by Seedcamp with Axeleo Capital, Motier Ventures, Kima Ventures, and others, then a $10 million seed led by Gradient, with backing from founders of Mistral, Datadog, Deel, and Dataiku. The company is hiring across Paris, New York, and San Francisco as it scales its search infrastructure for AI.