Diffbot

Diffbot is a web data tool for developers and data teams. Its Extract API reads a webpage the way a person would, using computer vision, and returns clean, structured data instead of raw HTML. The Knowledge Graph product is a database of more than 10 billion entities, including people, companies, and articles, all built by crawling the public web. Teams use Diffbot to feed clean web data into their own AI models or search tools, and a Crawl tool lets a team point Diffbot at a whole site instead of one page at a time. Diffbot charges by credits, and even the free tier includes all four of its core APIs.

This fits a data, engineering, or research team that needs clean web data for its own AI models or dashboards; it is not a point-and-click research tool for a business user. A good starting point is the free tier, which gives 10,000 credits a month with no credit card needed. A team ready for real volume should plan around 299 dollars a month for the Startup tier, or 899 dollars a month for the Plus tier; treat these as planning figures and confirm current rates with Diffbot. One limit is that this tool needs a developer to wire it into other systems. Another risk is that websites change their layout often, so extraction quality can vary and should be spot-checked.