Diffbot
AI-powered web data extraction plus a web-scale Knowledge Graph of billions of entities.
About
Diffbot is an AI-driven web data extraction platform that turns unstructured web content into structured data. Its extraction APIs auto-detect page types and pull structured articles, products, discussions, and images with high accuracy, while its Knowledge Graph holds billions of connected entities (organizations, people, news, products) queryable via DQL, the Diffbot Query Language.
Developers use the token-authenticated REST API at api.diffbot.com, with integrations for LangChain (DiffbotGraphTransformer) and a growing ecosystem of agent skills and Claude Code plugins. Third-party directories report freemium pricing with a free plan and usage-based tiers.
Limitations: pricing is custom for enterprise-scale use and the free tier is limited; entity coverage skews toward English-language and business-oriented web content.
What it can do
- Automatic page-type detection with article, product, and discussion extraction
- Knowledge Graph of billions of entities queryable via DQL
- NLP API for entity extraction and sentiment analysis
- Crawlbot for site-wide extraction jobs
Setup
Get a free API token at diffbot.com; call api.diffbot.com/v3 endpoints with the token as a query parameter.
Prerequisites
A Diffbot API token.
Use cases
Works with
Trust score — 8/10
Scored 8/10 (verified tier, metrics-v1). Evidence: Verified via vendor site/docs/GitHub and reputable coverage, wave 80; Trending score 78/100 from researcher assessment.
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.