serp.fast

Linkup

AI search with proprietary 'information-atom' indexing that licenses content from publishers rather than scraping it.

Nathan Kessler
By Nathan KesslerUpdated

Each tool is evaluated against our methodology using public docs, vendor demos, and hands-on testing.

AI search APIs are the infrastructure layer that gives large language models access to current web information. Unlike traditional search engines, these APIs return semantically relevant, structured results optimized for retrieval-augmented generation (RAG) and AI agent workflows. They're essential for any AI product that needs to answer questions about the real world beyond its training data.

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Features

JS Rendering
Structured Output
Open Source
Self-Hosted Option
Pricing:FreemiumSee pricing →

Editorial assessment

The ethical play in AI search – licensing content from publishers rather than scraping positions Linkup well as the legal landscape tightens. SOC2 Type II certified and backed by Gradient, but with only ~$13M in funding, the index depth can't match Exa or Brave yet. Best for teams that prioritize data provenance.

How Linkup compares

Exa

Exa has a deeper index and more mature product, but without Linkup's publisher licensing model.

Tavily

Tavily has broader framework adoption but lacks Linkup's ethical sourcing angle.

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