Diffbot Review: A Knowledge Graph Built From the Open Web
Diffbot fits teams that want structured web data through one APIIn this Diffbot review, Free returns a 429 Quota Exceeded response once it hits 10,000 credits or the rate limit, read on Oct 4, 2026, and the first paid plan, Startup, is $299 a month, read on Sep 25, 2026.
Every score on this page validated by the site owner · latest validation Oct 16, 2026 · How we score
Diffbot in three sentences
Diffbot is a web-data extraction and knowledge graph platform that delivers structured data through an API, per its homepage read on Sep 25, 2026. Its monthly plans are Free at $0 with 10,000 credits, Startup at $299 with 250,000 and Plus at $899 with 1,000,000, and Enterprise lists a custom credit allotment, read on Sep 25, 2026. No tagged review counts exist for it, so this Diffbot review states the vendor's facts and sets no sentiment claim.
See it before you read on
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What it costs
Four plans. Every figure read on the vendor's pricing page on Sep 25, 2026.
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- Credits / month
- Custom
- Rate limit
- 25+ / sec
Prices read on the vendor's page: Free $0, Startup $299 and Plus $899 a month.
Scores set with no tagged review counts; global score 7.7.
What you get, what you don't
Six things Diffbot does. None of the six is missing on the vendor's pages.
- Microsoft ExcelNative
- Google SheetsNative
- CDataNative
- MakeNative
- Data hostedUS
- GDPR data processing agreementAvailable
- SOC 2 reportNot published
- Single sign-onNot published
- ChannelsEmail
- HoursNot published
- PhoneNot published
- Tagged reviewsNone discuss support
The data behind the score
Our five scores against the average of the tools we score.
Should you buy it?
Name your dealbreaker. No profile is scored on its own yet: too few tagged reviews per profile, so the page shows the overall score.
Buy it if You want structured data from web pages and a Knowledge Graph through one API, with a Free plan at $0 a month that needs no credit card. Skip it if You want a paid plan priced under $299 a month, or a support channel beyond email.
Free stops at 10,000 credits or 5 requests a minute On Free, a 429 Quota Exceeded response comes once 10,000 credits or the rate limit is reached, read on Oct 4, 2026; Free lists 5 requests a minute, read on Sep 25, 2026. We hold no published fact that shows another tool here does better.
The first paid plan is $299 a month After Free at $0, the next plan is Startup at $299 a month with 250,000 credits, and Plus follows at $899 a month, read on Sep 25, 2026. We hold no published fact that shows another tool here does better.
Support is listed by email only The support page lists email for technical and implementation help, read on Oct 4, 2026; Enterprise lists dedicated support, read on Sep 25, 2026. Tomba covers it
Questions to ask the vendor
- What happens to requests once Free reaches 10,000 credits?A 429 Quota Exceeded response comes at 10,000 credits or the rate limit, read on Oct 4, 2026.
- How many credits does one extraction or one query use?Plans are sized in credits a month, 250,000 on Startup and 1,000,000 on Plus, read on Sep 25, 2026, and this page holds no credit cost per call.
- Which plan adds Crawl and extra user seats?Plus lists access to Crawl with 25 active crawls and 3 user seats, read on Sep 25, 2026.
- What is the overage rate beyond the monthly credits?Startup lists $0.001 per credit and Plus $0.0009 per credit, read on Sep 25, 2026.
If Diffbot isn't it
Three tools we score in this category. Each card names where the tool is weaker. The highest-scored tool that covers a dealbreaker above is always among them. Free plan cap and Price level have no card: we hold no published fact that shows another tool here does better. Click a card, or a name below, to put it next to Diffbot.
- Support by chat and email; Diffbot's support page lists email
- Free plan and trial draws 3 negative mentions in its reviews
- Technology trend history back to 1985
- Data accuracy draws 2 negative mentions in its reviews
- Custom data feeds delivered via AWS, GCP or Snowflake
- Billing and renewals draw 1 negative mention in its reviews
Diffbot vs Tombathe three alternatives
 Diffbot |
Tomba |
BuiltWith |
People Data Labs |
|
|---|---|---|---|---|
| Our score | 7.7* | 8.6 | 7.6 | 7.4* |
| Price and plan | ||||
| Entry price | $299 /mo | $89 /mo | $295 /mo | From $98 /mo |
| Free plan | Free plan | Free plan | Free plan | Free plan |
| Free trial | No free trial stated | No free trial stated | No free trial | No free trial |
| Four dimensions, same grid | ||||
| Ease of setup | 8.4* | 9.3 | 7.4 | 8.2* |
| Feature depth | 7.5* | 8.6 | 8.3 | 7.5* |
| Value for money | 8.3* | 7.6 | 7.8 | 6.9* |
| Support quality | 7.3* | 7.9 | 6.6 | 6.7* |
| Fit | ||||
| Integrations | Excel, Google Sheets, CData, Make | HubSpot, Pipedrive | Salesforce, HubSpot | Salesforce, Zapier |
| Support channels | Chat, email | Phone and email | Email / ticket form | |
| Main strength | Structured JSON from URLs | Email finder with verification | Website technology lookup | Person and company enrichment APIs |
Tomba lists AI company search from a plain-language description and REST access with 10 SDKs, read on Oct 3, 2026.
BuiltWith lists a REST API with MCP tools for AI agents, and Excel and CSV export, read on Sep 25, 2026.
People Data Labs lists a Person Enrichment API with one-to-one profile matching and a Person Search API with a query builder, read on Oct 3, 2026.
Paid plan prices a month, read between Sep 25 and Oct 4, 2026: Diffbot Startup $299; Tomba Growth $89; BuiltWith Basic $295; People Data Labs Pro starts at $98.
Same five-dimension grid for every tool; the fifth dimension changes with the category and stays out of this table. Prices and integrations read on each vendor's public pages between Sep 25 and Oct 4, 2026. * Under 10 tagged reviews: the score is weighted toward the site average; with none, it comes from the averages of the tools we score. Some of these prices have not been read again for 6 months. Check the vendors' pages before you buy.
What the vendor's pages say, in depth
Diffbot turns a single URL into structured JSON, and can crawl a whole site
The vendor lists classifying and extracting structured JSON from a single URL, read on Sep 25, 2026. It also lists a crawl that walks an entire site from one seed URL and extracts thousands of pages into one structured dataset, read on Sep 25, 2026.
A natural language API resolves entities, relationships, facts and sentiment from plain text, read on Sep 25, 2026. This page holds no accuracy figure for any of these APIs, and no tagged review counts to draw one from.
The Diffbot Knowledge Graph covers over 10 billion entities
The vendor describes the Knowledge Graph as a graph database of over 10 billion entities, among them news organizations and people, crawled and structured from the public web, read on Sep 25, 2026. Structured queries run against it for companies, people and news, read on Sep 25, 2026.
A web search API without ads or telemetry is listed as well, built for self-hosting and API access, read on Sep 25, 2026. This page holds no refresh frequency for the graph, so it says nothing on how current a record is.
Diffbot pricing lists Free, Startup at $299 and Plus at $899 a month
Free is $0 a month with 10,000 credits a month, Startup $299 a month with 250,000 credits and Plus $899 a month with 1,000,000 credits, read on Sep 25, 2026. Enterprise lists a custom credit allotment, with a quote after talking to sales, read on Sep 25, 2026.
Past the monthly credits, Startup lists an overage of $0.001 per credit and Plus $0.0009 per credit, read on Sep 25, 2026. Plus also lists access to Crawl with 25 active crawls and 3 user seats, while Enterprise lists 100+ active crawls and custom user seats.
Free is $0 a month with all four APIs and no credit card
Free lists 10,000 credits a month with all four APIs included, read on Sep 25, 2026. Signing up for Free does not require a credit card, and payment details are added only when upgrading, read on Oct 4, 2026.
Billing is a monthly subscription that can be cancelled at any time, with no charge for the following month, read on Oct 4, 2026. Startup lists all four APIs included as well, read on Sep 25, 2026.
Add-ins for Excel and Google Sheets sit beside CData and Make
Native integrations are listed for Microsoft Excel, Google Sheets, CData and Make, read on Oct 4, 2026. Support is listed by email, for technical and implementation help, read on Oct 4, 2026.
Stored data is kept on encrypted services located in the US, and a Data Processing Addendum incorporating EU Standard Contractual Clauses is available, read on Sep 25, 2026.
Before you commit
The vendor describes the Diffbot Knowledge Graph as a graph database of over 10 billion entities, among them news organizations and people, crawled and structured from the public web, read on Sep 25, 2026. This page holds no refresh frequency for it, and no tagged review counts to draw one from.
Yes, there is a free tier: Free is $0 a month with 10,000 credits, and signing up does not require a credit card, read between Sep 25 and Oct 4, 2026. Paid plans start with Startup at $299 a month, and Enterprise is a custom quote, read on Sep 25, 2026.
The vendor lists extracting structured JSON from a single URL and a crawl that walks an entire site from one seed URL, read on Sep 25, 2026. This page holds no test across different sites, so it makes no claim on which sites an extraction handles.
Diffbot delivers its data through an API, and also lists Microsoft Excel and Google Sheets integrations, read on Oct 4, 2026. The pricing page addresses teams with steady, heavy usage, and Plus lists 3 user seats, read on Sep 25, 2026.
This page holds no accuracy figure for Diffbot, on any type of page, and it has no tagged reviews to draw one from. A rate belongs to the page that measured it, on that page's own sample. What the vendor lists is structured JSON from a single URL, read on Sep 25, 2026.
Native integrations are listed for Microsoft Excel, Google Sheets, CData and Make, read on Oct 4, 2026. This page holds no setup time for any of them, so it sets no verdict on how easy the connection is.
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