Diffbot review: the best AI data company for structured web knowledge?

Answer in brief: Diffbot turns the public web into structured entities and facts about organizations, people, articles and more. You use them through a Knowledge Graph plus Extract, Crawl, Natural Language and Web Search APIs. It is #9 in our data-sourcing ranking and the pick when your AI needs entities rather than raw pages, for RAG, enrichment or grounding. Pricing is transparent, but bulk Knowledge Graph exports use credits fast.

At a glance: Data-sourcing rank #9 of 14 · Segment: web data · Best for: entity-centric RAG and enrichment · Pricing: free to $899/month, plus custom Enterprise.

What Diffbot does for AI data buyers

Diffbot's Knowledge Graph links facts about entities assembled from billions of public pages; it describes more than 10 billion entities. Around it sit Extract, Crawl (Plus and up), Natural Language and Web Search APIs.

Who it fits

RAG and agent builders needing reliable facts on companies and people, CRM and market-data enrichment, and researchers (students and academics get Startup-tier access free). For bulk raw text, use Common Crawl.

Why buyers shortlist it

• Structure out of the box. Entities and relationships, not HTML.
• Transparent credits. Page extraction 1 credit, NLP document 1, web search 1, Knowledge Graph entity export 25, entity enhancement with refresh 100.
• No lock-in. Monthly, cancel anytime.
• Predictable overage. $0.001 per credit on Startup, $0.0009 on Plus.

Honest drawbacks

• At 25 credits each, Startup's 250,000 credits cover about 10,000 entity exports a month.
• Crawl needs Plus or above.
• The free plan is limited to 5 requests per minute.
• We found no dated 2026 product news.

Pricing model

Free (10,000 credits/month), Startup ($299/month, 250,000 credits), Plus ($899/month, 1,000,000 credits) and Enterprise (custom).

Best alternatives

• Bright Data: ready-made datasets and live feeds.
• Zyte: AI Extraction into custom schemas.
• Apify: targeted scrapers and crawlers.

FAQ

How much does Diffbot cost?

Free with 10,000 credits a month, $299/month for 250,000 credits, $899/month for 1,000,000 credits, or custom Enterprise.

What is a Diffbot credit?

Its unit of processing. A page extraction costs 1 credit and a Knowledge Graph entity export costs 25.

Does Diffbot require a contract?

No. It is a monthly subscription you can cancel anytime.

Sources

• Diffbot plans and pricing
• Diffbot Knowledge Graph

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