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Diffbot

diffbot.com

From $299/mo Free plan WebAPISelf-hosted
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Spec score 8.2 #7 of 29 in Data Mining And Extraction Software

What it is

Diffbot uses AI models to turn unstructured web content into linked knowledge through a set of data services. Extract classifies a page and returns structured JSON using a standard page type and ontology. Crawl starts with seed URLs, visits sites, and collects extracted pages in structured datasets. Natural Language resolves entities, relationships, coreferences, salience, and sentiment in plain text. The Knowledge Graph supports structured queries about companies, people, news, and other public web entities. Web Search provides an API and a self-hostable search index for a machine or cloud, including offline use; Diffbot says closed media sites such as Facebook, Reddit, LinkedIn, and Instagram are generally off limits. Python and TypeScript libraries and agent skills are listed as interfaces. The free plan provides 10,000 credits per month, all four APIs, and up to 5 requests per minute without a credit card. It returns a 429 Quota Exceeded response after the credit allowance or rate limit is reached, with quotas resetting at the start of each billing period. Startup costs $299 a month. Diffbot lists API, self-hosted, and web platforms.

Spec sheet

What it does
Diffbot builds AI models that read and transform the unstructured web into linked knowledge.Read 7 Oct 2026 · diffbot.com
Integrations
The documentation lists Python and TypeScript libraries and agent skills as interfaces.Read 7 Oct 2026 · diffbot.com
Support
Technical and implementation help is available at [email protected], while account, billing, and sales inquiries go to [email protected] or the listed phone number.Read 7 Oct 2026 · diffbot.com
Headquarters
The company lists its address as 333 Ravenswood Ave, Menlo Park, CA 94025.Read 7 Oct 2026 · diffbot.com
Crawl
Crawl spiders sites from seed URLs and extracts pages into structured datasets.Read 7 Oct 2026 · diffbot.com
Extract
Extract classifies a page and returns structured JSON based on a standard page type and ontology.Read 7 Oct 2026 · diffbot.com
Knowledge Graph
The Knowledge Graph supports structured queries about companies, people, news, and other public web entities.Read 7 Oct 2026 · diffbot.com
Natural Language
The Natural Language service resolves entities, relationships, coreferences, salience, and sentiment in plain text.Read 7 Oct 2026 · diffbot.com
Plan limits
The Free plan returns a 429 Quota Exceeded response after 10,000 credits or its rate limit, and quotas reset at the start of each billing period.Read 7 Oct 2026 · diffbot.com
Security and privacy
Diffbot’s privacy policy says it issues subscribers a unique API key and collects login, query history, and API call data to provide the services.Read 7 Oct 2026 · diffbot.com
Target users
Diffbot says its services are used by companies worldwide to access unstructured public web data at scale.Read 7 Oct 2026 · diffbot.com
Web Search
Diffbot Web Search offers an API and self-hostable search index designed to run on a machine or cloud, including offline use.Read 7 Oct 2026 · diffbot.com
Web Search limit
The Web Search page says closed media sites such as Facebook, Reddit, LinkedIn, and Instagram are generally off limits.Read 7 Oct 2026 · diffbot.com

Plans and prices

Free Free 10,000 credits / month All four APIs included · 5 requests / min · No credit card required Read 7 Oct 2026 · diffbot.com
Startup $299 a month $299 / mo 250,000 credits / month · Overage at $0.001 / credit · All four APIs included · 5 requests / sec Read 7 Oct 2026 · diffbot.com
Plus $899 a month $899 / mo 1,000,000 credits / month · Overage at $0.0009 / credit · Access to Crawl (25 active) · 3 user seats · 25 requests / sec Read 7 Oct 2026 · diffbot.com
Enterprise Priced on request Custom Custom credit allotment · 100+ active crawls · Custom user seats · Dedicated support · 25+ requests / sec Read 7 Oct 2026 · diffbot.com

Every Diffbot plan and price →

Strong points and limits

Strong points

  • Four APIs included in the free plan
  • Free plan requires no credit card
  • Extract returns structured JSON
  • Web Search offers a self-hostable index
  • Python and TypeScript libraries are listed

Limits

  • Free plan is limited to 10,000 credits per month
  • Free requests are limited to 5 per minute
  • Startup costs $299 a month
  • Closed media sites are generally off limits

Who it suits

Diffbot suits companies that need to query, extract, or organize public web data at scale. Its APIs and structured outputs are also relevant to teams building web-data workflows.

Verdict

Diffbot offers distinct services for page extraction, crawling, natural-language analysis, knowledge-graph queries, and web search. The free plan has a monthly credit and request limit; Startup costs $299 a month.

Where Specifiction places it

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