Linkup

About Linkup

Linkup is a production-grade web search API built specifically as the retrieval layer under AI applications, rather than a consumer search engine with an API bolted on. It exposes three primitives with deliberately different latency and cost profiles: Fetch, which extracts the content of a given page in under two seconds; Search, which returns sourced, cited results with full-text snippets in one to three seconds and is the primitive an agent calls mid-loop; and Research, an asynchronous deep-research endpoint that runs for one to ten minutes on complex questions. You keep control of the index rather than accepting a black box — tuning which sources are in scope and how fresh results must be — and the whole thing can be deployed inside your own cloud when data residency matters. Accuracy is published against benchmark datasets including SimpleQA, with a methodology page rather than a bare claim. The company positions around four uses: giving agents real-time cited web access through one vendor instead of several; legal research where full regional data residency is non-negotiable; sales enrichment that resolves a company at signup and surfaces live buying signals; and reinforcement learning, where training a search agent on the same retrieval engine you ship in production gives a denser reward signal and cuts tokens, turns and searches. SDKs ship for Python and Node.js alongside plain cURL, and SOC 2 Type II is included on every plan.

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