Knowledge Graph — search 10B+ entities and enrich company/person records.
Low accuracy (26.67%). Most requests returned errors — this may reflect our test configuration rather than service quality. We're working to improve coverage. Very reliable — 9/9 requests got a response. Median response time: 65ms (p95: 1460ms).
Last tested: 3/26/2026, 2:54:36 PM
“The experience was incredibly disappointing, with every single request failing to yield any results, highlighting a severe lack of reliability in what claims to be an expansive knowledge graph. Despite its promise to enrich person and organization records, the actual performance was plagued by errors and sluggish response times, making it hard to trust its capabilities for real-world applications.”
“Diffbot KG failed every single test—500+ errors, timeouts, and broken pagination—making it completely unreliable for production use regardless of what the marketing claims about 10B entities. Don't use this until they fix their API stability; a knowledge graph that doesn't work isn't a knowledge graph at all.”
Real requests we sent and the responses we received.
Search with non-canonical facts included
POST /diffbot-kg/searchtypical64msHTTP 429
Search with pagination offset
POST /diffbot-kg/searchtypical65msHTTP 429
Enhance organization record with URL
POST /diffbot-kg/enhancetypical65msHTTP 429
Search for people with specific job title using text fallback
POST /diffbot-kg/searchtypical1460msHTTP 502
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