Head to head
Clay vs FullContact
As a data enrichment API, FullContact rates higher on the APIbenchmarks Index, 68.4 to 66.9, a 1.5-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Clay | FullContact |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 66.9 | 68.4 |
Specifications
| Clay | FullContact | |
|---|---|---|
| Best for | Multi-provider enrichment orchestration | Identity resolution / Identity Graph |
| Free tier | Free plan with limited credits (no card) | 100 API calls/mo (Developer plan) |
| Pricing | Data Credits + Actions | Per matched API call |
| Official SDKs | 1 languages | 7 languages |
Is Clay better than FullContact?
On the APIbenchmarks Index, FullContact rates higher (68.4 vs 66.9). 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
FullContact leads by 1.5 points (68.4 vs 66.9) and wins 3 of 4 criteria; Clay wins 1.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 65 | 70 | |
| Reliability | 75 | 70 | |
| Ecosystem & SDKs | 60 | 62 | |
| Accessibility | 68 | 72 |
Choose Clay if… / choose FullContact if…
- →reliability matters most to you (75 vs 70)
- →your use case matches its focus: multi-provider enrichment orchestration
- →documentation & dx matters most to you (70 vs 65)
- →ecosystem & sdks matters most to you (62 vs 60)
- →accessibility matters most to you (72 vs 68)
- →you need broad SDK coverage (7 official SDKs vs 1)
- →your use case matches its focus: identity resolution / identity graph
Pricing side by side
- Model
- Data Credits + Actions
- Free tier
- Free plan with limited credits (no card)
- Free$0/mo
- Launchfrom ~$167–185/mo (annual)
- Growthfrom ~$446–495/mo (annual)
- EnterpriseCustom (annual commitment, ~$30k/yr+ typical)
- 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 2026-06-27 (Clay) and 2026-06-27 (FullContact).
SDK and language coverage
Both · 0
None
Only Clay · 1
No official client SDK libraries published; integration is via HTTP API node, webhooks, and native CRM connectors
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
- +Waterfall enrichment chains 150+ data providers under one subscription, materially raising email/firmographic match rates versus any single source
- +Combines enrichment, AI web research (Claygent), and signal monitoring (funding, hiring, job changes, tech installs) in one platform
- +Spreadsheet-style table UI plus Clay University make complex multi-step enrichment accessible without code
- –Dual credit/action model causes fast, hard-to-predict credit burn; auto-recharge billing reportedly fires without advance warning
- –Steep learning curve, reviewers cite hours in week one and 2–3 weeks before workflows are reliable
- –Phone/mobile number coverage is weak (~30–35% match rate)
- +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
Clay vs FullContact: questions
- Which has better documentation, Clay or FullContact?
- FullContact scores higher on documentation and developer experience: 70 vs 65 out of 100.
- Which is more reliable, Clay or FullContact?
- Clay scores higher on reliability: 75 vs 70 out of 100.
- Do Clay and FullContact have a free tier?
- Clay: yes (Free plan with limited credits (no card)). FullContact: yes (100 API calls/mo (Developer plan)).
- How are Clay and FullContact priced?
- Clay: Data Credits + Actions. FullContact: Per matched API call.
- Which has more official SDKs?
- FullContact lists 7 official SDKs, Clay lists 1.