Head to head
Coresignal vs FullContact
As a data enrichment API, Coresignal rates higher on the APIbenchmarks Index, 75.2 to 68.4, a 6.8-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Coresignal | FullContact |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 75.2 | 68.4 |
Specifications
| Coresignal | FullContact | |
|---|---|---|
| Best for | Raw professional and jobs data for engineering teams | Identity resolution / Identity Graph |
| Free tier | No | 100 API calls/mo (Developer plan) |
| Pricing | Monthly credit subscription (Collect + Search credits) | Per matched API call |
| Official SDKs | 5 languages | 7 languages |
Is Coresignal better than FullContact?
On the APIbenchmarks Index, Coresignal rates higher (75.2 vs 68.4). It leads on the four weighted criteria, but price is reported separately, so the best choice still depends on your budget.
Verdict in one line
Coresignal leads by 6.8 points (75.2 vs 68.4) and wins 4 of 4 criteria.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 80 | 70 | |
| Reliability | 78 | 70 | |
| Ecosystem & SDKs | 66 | 62 | |
| Accessibility | 76 | 72 |
Choose Coresignal if… / choose FullContact if…
- →documentation & dx matters most to you (80 vs 70)
- →reliability matters most to you (78 vs 70)
- →ecosystem & sdks matters most to you (66 vs 62)
- →accessibility matters most to you (76 vs 72)
- →your use case matches its focus: raw professional and jobs data for engineering teams
- →you want a free tier to start (100 API calls/mo (Developer plan))
- →you need broad SDK coverage (7 official SDKs vs 5)
- →your use case matches its focus: identity resolution / identity graph
Pricing side by side
- Model
- Monthly credit subscription (Collect + Search credits)
- Free tier
- No
- Free trial$0
- Mini$49/mo
- Starter$199/mo
- Pro$499/mo
- Growth to Elite$1,000 to $5,000/mo
- DatasetsFrom $1,000+
- Model
- Per matched API call
- Free tier
- 100 API calls/mo (Developer plan)
- Developer (Free)$0
- Growth$99/month
- Basic~$500/month
- Premium~$2,000/month
- Enterprise$10,000+/month (custom)
Vendor-published pricing, verified 2026-10-07 (Coresignal) and 2026-06-27 (FullContact).
SDK and language coverage
Both · 0
None
Only Coresignal · 5
REST API (HTTPS / JSON)Coresignal MCP server (Node.js via mcp-remote)API playgrounds (web)llms.txt / llms-full.txt documentation exportsNo official language SDKs found
Only FullContact · 7
Go (official V3 client)Java 8 (official V3 client)Java 11+ (official V3 client)Python (official V3 client)Ruby (archived/legacy)PHP (archived/legacy)Postman collection
Strengths and weaknesses
- +Transparent self-serve credit plans from $49/month, no sales call to start
- +Quickstart, API playgrounds, rate-limit reference and llms.txt/llms-full.txt exports in the docs
- +Official MCP server for Claude, Cursor and other MCP clients
- –No official language SDKs, OpenAPI spec page or Postman collection found in the docs index
- –Free access is a 7-day trial only, not a recurring free tier
- –Company data refreshes roughly monthly per third-party reviews; no direct-dial phone numbers
- +Multi-field enrichment: accepts many identifier types (email, phone, name+address, social URLs/usernames, MAIDs, plus Resolve PersonIDs) to lift match rates
- +Deep attribute coverage, 900+ appendable data attributes via Person Insights Bundles (demographics, household, employment history, affinities, shopping habits)
- +Tunable confidence: ML 'Belief Vector' lets callers set confidence thresholds per request to balance precision vs. match rate
- –Real-world match rates often far below the advertised 93%, reviewers report ~40-50%, especially outside the U.S.
- –Data-quality complaints of false positives in age, employment, and education fields, with no data-freshness timestamps on attributes
- –Rate limit (~600 queries/min) too low for large batch enrichment jobs
Coresignal vs FullContact: questions
- Which has better documentation, Coresignal or FullContact?
- Coresignal scores higher on documentation and developer experience: 80 vs 70 out of 100.
- Which is more reliable, Coresignal or FullContact?
- Coresignal scores higher on reliability: 78 vs 70 out of 100.
- Do Coresignal and FullContact have a free tier?
- Coresignal: no free tier. FullContact: yes (100 API calls/mo (Developer plan)).
- How are Coresignal and FullContact priced?
- Coresignal: Monthly credit subscription (Collect + Search credits). FullContact: Per matched API call.
- Which has more official SDKs?
- FullContact lists 7 official SDKs, Coresignal lists 5.