# Diffbot, free, GET /kg/v3/dql: Company discovery API

> Search the Knowledge Graph using DQL

Diffbot's company discovery API on its Free plan. It costs $0.00 per 1,000 companies. It returns 12 of the 13 key fields we check: Description, Industry, Type and status, Images, Technologies, Employees, Social profiles, Locations, Funding, Revenue and budgets, Parents, Phones.
We rank 533 plans by price. [Deepline's top-up](https://datacircle.dev/company-discovery-apis/deepline/top-up/llms.txt) costs the least per 1,000 companies. Deepline's company discovery API costs nothing beyond the plan price.
[GetProspect](https://datacircle.dev/company-discovery-apis/getprospect/49-monthly/llms.txt), [Hunter](https://datacircle.dev/company-discovery-apis/hunter/49-monthly-starter-post-discover/llms.txt) and [Skrapp](https://datacircle.dev/company-discovery-apis/skrapp/349-monthly/llms.txt) are the best company discovery API providers in our benchmark.

- This page: https://datacircle.dev/company-discovery-apis/diffbot/free-get-kg-v3-dql
- [Best company discovery API in 2026](https://datacircle.dev/best-company-discovery-api.txt)
- Get it: https://www.diffbot.com/pricing
- Request: `GET https://kg.diffbot.com/kg/v3/dql`
- API key: with the plan, on https://www.diffbot.com/pricing
- Its API docs: https://www.diffbot.com/docs/dql/get
- Sold by: Diffbot (https://www.diffbot.com)
- Checked: 2026-10-17

## In the answer

- Completeness: 92%
- Description: ✓
- Industry: ✓
- Type and status: ✓
- Images: ✓
- Technologies: ✓
- Employees: ✓
- Social profiles: ✓
- Locations: ✓
- Funding: ✓
- Revenue and budgets: ✓
- Parents: ✓
- Phones: ✓

## Price

- $ per 1,000 companies: $0.00
- Per: result
- Billing: free

## Aggregators

- Aggregators: treg: your key free, paid $29.90 per 1,000 results

## Charges

- Most per search: no limit
- Also pays for: from the same budget: Extract API · Natural Language API · Web Search API · Search (DQL) API for people · Search (DQL) API for job postings · Enhance API for an organization · Enhance API for a person

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Search the Knowledge Graph using DQL

## Data

- Freshness: stored
- Keep data: no limit
- Use data: USE RESTRICTIONS [...] You agree that you will not: sublicense, resell, rent, lease, transfer, assign, time share, or otherwise commercially exploit or make the Service available to any third party (However, you may display and use the facts generated by the Service as part of a commercial application.), use the Service for any unlawful purpose or for the promotion of illegal activities, use the Service to attempt to, or harass, abuse or harm another person or group, use another user’s account without permission, interfere or attempt to interfere with the proper functioning of the Site or Service, modify, adapt or hack the Service to, or otherwise attempt to gain unauthorized access to the Service or its related systems or networks, use the API or the Data in any manner that violates the rights of any person, including but not limited to intellectual property rights, rights of privacy or rights of publicity, reverse engineer, decompile or disassemble any portion of the Service, bypass any robot exclusion headers or other measures we take to restrict access to the Site or Service or use any software, technology, or device to scrape, spider, or crawl the Site or Service or harvest or manipulate data, or publish or link to malicious content intended to damage or disrupt another user’s browser, computer, or mobile device.

## Plan

- Pay: $0
- You get: 10,000 credits a month
- Enough for: 400 results a month
- Expires: at the monthly refresh, no rollover

## Rate limit

- Per second: 0.083
- Batch: 1

## Speed

- Answer: in the call
- Median: 0.46 s

## The call

- You send: query (in DQL). Optional: type, from, size, filter, filterExclude, jsonmode, nonCanonicalFacts, report
- Method: GET
- Path: /kg/v3/dql

## About the plan

- Plan: Free
- Who can get it: anyone 13 or over

## The 128 fields the plan's answer can hold

entity ID, Diffbot URI, entity type, entity types, name, full name, all names, summary, description, all descriptions, descriptors, motto, categories, image, images, logo, website, all URIs, URI details, LinkedIn URL, Twitter URL, Facebook URL, GitHub URL, Google+ URL, AngelList URL, Crunchbase URL, blog URL, Wikipedia URL, email addresses, phone numbers, location, locations, number of locations, founded year, founders, CEO, board members, employee count, employee count min, employee count max, employee count ranges, employee categories, current employees in the Knowledge Graph, remote score, has remote international employees, revenue, yearly revenues, quarterly revenues, market capitalization, stock, IPO, is public, is non-profit, is acquired, is dissolved, acquired by, investments, total investment, number of unique investors, parent company, ultimate parent, subsidiaries, legal entities, predecessors, successors, competitors, customers, suppliers, partnerships, technographics, SEC forms, monthly website traffic, monthly website traffic growth, NAICS classification, NAICS 2017 classification, SIC classification, SIC code, SIC code description, UK SIC classification, ISIC classification, NACE classification, NAF classification, ANZSIC classification, KVED classification, OKVED classification, SSB classification, TSIC classification, MCC classification, MCC code, MCC code description, ABN, ACN, Canadian business numbers, Chinese social credit codes, Companies House company numbers, CUIT numbers, EDRPOU codes, GUI numbers (Taiwan), Indian CIN, EIN, Israeli company numbers, Corporate Number (Japan), Norwegian organization numbers, NPI numbers, Russian INN, CIK, SEPA IDs, SIREN, Thai taxpayer IDs, UEN, VAT numbers, importance, incoming edges, crawl timestamp, origins, number of origins, origin details, origin hashes, non-canonical facts, Wikipedia pageviews last month, Wikipedia pageviews month-over-month growth, Wikipedia pageviews last quarter, Wikipedia pageviews quarter-over-quarter growth, Wikipedia pageviews last year, Wikipedia pageviews year-over-year growth, total results, score, KG version

## Diffbot's plans (5)

- [Diffbot, free, GET /kg/v3/dql](https://datacircle.dev/company-discovery-apis/diffbot/free-get-kg-v3-dql/llms.txt): $0.00 per 1,000, 92% complete, stored
- [Diffbot, free, Diffbot for Students](https://datacircle.dev/company-discovery-apis/diffbot/free-diffbot-for-students/llms.txt): $0.00 per 1,000, 92% complete, stored
- [Diffbot, $299 monthly](https://datacircle.dev/company-discovery-apis/diffbot/299-monthly/llms.txt): $29.90 per 1,000, 92% complete, stored
- [Diffbot, $899 monthly](https://datacircle.dev/company-discovery-apis/diffbot/899-monthly/llms.txt): $22.475 per 1,000, 92% complete, stored
- [Diffbot, contact us](https://datacircle.dev/company-discovery-apis/diffbot/contact-us/llms.txt): 92% complete, stored

## Diffbot's calls for this API (1)

- `GET /kg/v3/dql`: [Diffbot, free, GET /kg/v3/dql](https://datacircle.dev/company-discovery-apis/diffbot/free-get-kg-v3-dql/llms.txt)

## Diffbot's APIs (6)

- [Diffbot: company discovery API pricing, 5 plans](https://datacircle.dev/company-discovery-apis/diffbot/free-get-kg-v3-dql/llms.txt)
- [Diffbot: job postings API pricing, 5 plans](https://datacircle.dev/job-posting-apis/diffbot/free-get-kg-v3-dql/llms.txt)
- [Diffbot: people search API pricing, 5 plans](https://datacircle.dev/people-search-apis/diffbot/free-get-kg-v3-dql/llms.txt)
- [Diffbot: people enrichment API pricing, 5 plans, GET /kg/v3/enhance/combine](https://datacircle.dev/person-enrichment-apis/diffbot/free-get-kg-v3-enhance-combine/llms.txt)
- [Diffbot: people enrichment API pricing, 5 plans, POST /kg/v3/enhance/bulk](https://datacircle.dev/person-enrichment-apis/diffbot/free-post-kg-v3-enhance-bulk/llms.txt)
- [Diffbot: people enrichment API pricing, 5 plans, GET /kg/v3/enhance](https://datacircle.dev/person-enrichment-apis/diffbot/free-get-kg-v3-enhance/llms.txt)
- [Diffbot: company enrichment API pricing, 5 plans, POST /kg/v3/enhance/bulk](https://datacircle.dev/company-enrichment-apis/diffbot/free-post-kg-v3-enhance-bulk/llms.txt)
- [Diffbot: company enrichment API pricing, 5 plans, GET /kg/v3/enhance](https://datacircle.dev/company-enrichment-apis/diffbot/free-get-kg-v3-enhance/llms.txt)
- [Diffbot: web search API pricing, 5 plans, GET /api/v1/web_search](https://datacircle.dev/web-search-apis/diffbot/free-free-get-api-v1-web-search/llms.txt)
- [Diffbot: web search API pricing, 5 plans, POST /api/v1/web_search](https://datacircle.dev/web-search-apis/diffbot/free-free-post-api-v1-web-search/llms.txt)

## Diffbot: company discovery API alternatives

- [Enigma, $100 pack](https://datacircle.dev/company-discovery-apis/enigma/100-pack/llms.txt): $20.00 per 1,000, 62% complete, stored
- [Xverum, $199 monthly](https://datacircle.dev/company-discovery-apis/xverum/199-monthly/llms.txt): $22.111 per 1,000, 38% complete, stored
- [TheirStack, $400 monthly](https://datacircle.dev/company-discovery-apis/theirstack/400-monthly/llms.txt): $24.00 per 1,000, 77% complete, stored
- [The Swarm, $2,990 yearly, Premium 500, POST /v3/companies/fetch](https://datacircle.dev/company-discovery-apis/the-swarm/2990-yearly-premium-500-post-v3-companies-fetch/llms.txt): $24.917 per 1,000, 77% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-17.

- https://kg.diffbot.com/kg/ontology
- https://www.diffbot.com
- https://www.diffbot.com/company/privacy
- https://www.diffbot.com/company/terms
- https://www.diffbot.com/docs/credits
- https://www.diffbot.com/docs/dql/
- https://www.diffbot.com/docs/dql/concepts/origin
- https://www.diffbot.com/docs/dql/faq/data-sourcing
- https://www.diffbot.com/docs/dql/get
- https://www.diffbot.com/docs/dql/reference/query-types
- https://www.diffbot.com/docs/ontology/organization
- https://www.diffbot.com/docs/rate-limits
- https://www.diffbot.com/pricing
- https://www.diffbot.com/products/knowledge-graph
- https://www.diffbot.com/technology