GDELT Project vs Diffbot: full comparison for 2026
Quick verdict
GDELT Project (3.9/5) edges ahead of Diffbot (3.7/5) overall. GDELT Project is the better choice for zero-budget data projects and research prototypes. Diffbot is the stronger option for developers collecting news from a fixed list of sites. The right pick depends on your budget, how much history you need and whether you need full text.
GDELT Project vs Diffbot: head-to-head summary
| Criterion | GDELT Project | Diffbot |
|---|---|---|
| Founded | 2013 | 2008 |
| HQ | Open research project (no commercial HQ) | Menlo Park, California, USA |
| Team size | Not publicly disclosed | 11–50 |
| Rating | 3.9 / 5 | 3.7 / 5 |
| Primary differentiator | No key, no fee and global coverage refreshed every 15 minutes | Parser-free extraction from any article URL, linked to a Knowledge Graph |
| Pricing model | Free | Monthly credit plans |
| Entry price | Free | $299/mo |
| Formats & SDKs | REST API, JSON, CSV | REST API, JSON, Python SDK |
| Typical uses | Research & academia, Risk & compliance, Media monitoring | AI & LLM apps, Research & academia, Marketing & PR, Financial services |
GDELT Project vs Diffbot: overview
GDELT Project
The GDELT Project, created by Kalev Leetaru, watches broadcast, print and web news in more than 65 languages and publishes fresh data every 15 minutes. The DOC 2.0 API needs no key and no signup, which makes it the fastest free start here, and it returns article lists and timelines for a query. Bulk event and knowledge-graph tables are also available in Google BigQuery for SQL users. Two things trip developers up. Responses contain metadata and links only, so you have to fetch and parse each article yourself, and the data formats were designed for researchers, with field names and conventions that take some reading to understand.
Diffbot
Diffbot, founded by Mike Tung in 2008 and based in Menlo Park, California, has an estimated 30–40 staff. Point its Article API at any news URL and it returns title, author, date and clean text without a site-specific parser, and Crawlbot can follow a list of publishers you choose. Its Knowledge Graph links articles to companies, people and topics, so it can also be queried as a news source. The free plan includes 10,000 credits at five calls a minute, Startup costs $299 a month for 250,000 credits, and each exported Knowledge Graph entity costs 25 credits. It works best when you want to build your own news collection from chosen sites.
Features: GDELT Project vs Diffbot
| Capability | GDELT Project | Diffbot |
|---|---|---|
| Full article text | ✗ | ✓ |
| Historical archive | ✓ | ✓ |
| NLP enrichment | ✓ | ✓ |
| Story/event clustering | ✗ | ✗ |
| Official SDK | ✗ | ✓ |
| Streaming or webhooks | ✗ | ✗ |
| Free access | ✓ | ✓ |
Formats and SDKs: GDELT Project vs Diffbot
| Format / SDK | GDELT Project | Diffbot |
|---|---|---|
| REST API | ✓ | ✓ |
| Python SDK | N/A | ✓ |
| Node.js SDK | N/A | N/A |
| Webhooks | N/A | N/A |
| WebSocket | N/A | N/A |
| MCP server | N/A | N/A |
| S3/bulk delivery | N/A | N/A |
| BigQuery | ✓ | N/A |
Pricing comparison: GDELT Project vs Diffbot
| Criterion | GDELT Project | Diffbot |
|---|---|---|
| Entry price | Free | $299/mo |
| Pricing model | Free | Monthly credit plans |
| Access models | Open data | Free tier, Monthly plans, Enterprise contract |
| Price transparency | Public price | Public price |
| Price tier | Free | Mid-market |
Who each API suits: GDELT Project vs Diffbot
| Dimension | GDELT Project | Diffbot |
|---|---|---|
| Buyer type | Individuals to enterprise | Individuals to enterprise |
| Typical uses | Research & academia, Risk & compliance, Media monitoring | AI & LLM apps, Research & academia, Marketing & PR |
| Example use cases | A free signal source that tells you which articles to fetch. Geopolitical dashboards in BigQuery. | Monitoring niche trade publications. Clean article text for an LLM from known URLs. |
| How you get access | Open data | Free tier |
GDELT Project vs Diffbot: pros and cons
| GDELT Project | |
|---|---|
| + | You can call it right now with no account |
| + | BigQuery tables let you query years of events with SQL |
| + | Machine-translated coverage in 65+ languages |
| + | Event coding of who did what to whom suits geopolitical work |
| - | No article text, only links and derived fields |
| - | No SLA or support channel |
| - | Research-style schemas take time to learn |
| Diffbot | |
|---|---|
| + | No custom scrapers to maintain when a site changes layout |
| + | 10,000 free credits with no card |
| + | Knowledge Graph links coverage to companies and people |
| + | Crawlbot handles crawling the publishers you pick |
| - | Five calls a minute on the free plan |
| - | Knowledge Graph exports cost 25 credits each |
| - | You assemble the feed yourself |
Who should choose GDELT Project?
A typical fit: a free signal source that tells you which articles to fetch.
No key, no fee and global coverage refreshed every 15 minutes. Paid access starts at Free. Typical uses: Research & academia, Risk & compliance, Media monitoring.
Who should choose Diffbot?
A typical fit: monitoring niche trade publications.
Parser-free extraction from any article URL, linked to a Knowledge Graph. Paid access starts at $299/mo. Typical uses: AI & LLM apps, Research & academia, Marketing & PR, Financial services.
Decision matrix: GDELT Project vs Diffbot
| Your situation | Recommended choice |
|---|---|
| You want to start free before paying | Both |
| Your budget is at the lower end | GDELT Project |
| You need full article text in the response | Diffbot |
| You need years of historical news | Both |
| You want an official SDK | Diffbot |
| You are wiring news into an LLM agent | Both work through plain REST calls |
Use case fit: GDELT Project vs Diffbot
| Use case | GDELT Project fit | Diffbot fit | Winner |
|---|---|---|---|
| Research & academia | Strong | Strong | Both equally |
| Risk & compliance | Strong | Limited | GDELT Project |
| Media monitoring | Strong | Limited | GDELT Project |
| AI & LLM apps | Limited | Strong | Diffbot |
| Marketing & PR | Limited | Strong | Diffbot |
| Financial services | Limited | Strong | Diffbot |
Verdict: GDELT Project vs Diffbot
GDELT Project (3.9/5) is the stronger overall choice as a news data source. No key, no fee and global coverage refreshed every 15 minutes.
Diffbot (3.7/5) is worth a look if you need clean article text for an LLM from known URLs. If your situation matches that, Diffbot is a competitive option.
Related comparisons
GDELT Project vs Diffbot FAQ
Is GDELT Project better than Diffbot?
GDELT Project (3.9/5) scores higher overall, but "better" depends on your use case. GDELT Project's strongest advantage: you can call it right now with no account. Diffbot's strongest advantage: no custom scrapers to maintain when a site changes layout.
How do GDELT Project and Diffbot differ in pricing?
GDELT Project: free, with paid access from Free. Diffbot: monthly credit plans, with paid access from $299/mo. Both offer some free access for testing.
Which is better for enterprise: GDELT Project or Diffbot?
Diffbot sells enterprise contracts with negotiated volume and SLA terms. Neither carries licensed publisher content, so check copyright terms before republishing anything.
What are the main differences between GDELT Project and Diffbot?
What sets GDELT Project apart: no key, no fee and global coverage refreshed every 15 minutes. What sets Diffbot apart: parser-free extraction from any article URL, linked to a Knowledge Graph. They also differ on entry price (Free vs $299/mo) and typical uses (Research & academia, Risk & compliance vs AI & LLM apps, Research & academia).
Verify all details directly with each API before making a decision.