Head to head
Apollo.io vs FullEnrich
As a data enrichment API, Apollo.io rates higher on the APIbenchmarks Index, 80.1 to 72.5, a 7.6-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Apollo.io | FullEnrich |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 80.1 | 72.5 |
Specifications
| Apollo.io | FullEnrich | |
|---|---|---|
| Best for | Sales engagement plus enrichment | Waterfall email and mobile enrichment |
| Free tier | 10k credits/mo (verified corporate domain) or 100/mo | 50 free trial credits, no card |
| Pricing | Per credit (email 1, phone 8) | Per successful result (email 1, mobile 10) |
| Official SDKs | 6 languages | 5 languages |
Is Apollo.io better than FullEnrich?
On the APIbenchmarks Index, Apollo.io rates higher (80.1 vs 72.5). 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
Apollo.io leads by 7.6 points (80.1 vs 72.5) and wins 2 of 4 criteria; FullEnrich wins 1.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 80 | 80 | Tie |
| Reliability | 84 | 66 | |
| Ecosystem & SDKs | 78 | 64 | |
| Accessibility | 78 | 80 |
Choose Apollo.io if… / choose FullEnrich if…
- →reliability matters most to you (84 vs 66)
- →ecosystem & sdks matters most to you (78 vs 64)
- →you need broad SDK coverage (6 official SDKs vs 5)
- →your use case matches its focus: sales engagement plus enrichment
- →accessibility matters most to you (80 vs 78)
- →your use case matches its focus: waterfall email and mobile enrichment
Pricing side by side
- Model
- Per credit (email 1, phone 8)
- Free tier
- 10k credits/mo (verified corporate domain) or 100/mo
- Free$0
- Basic$49/user/mo (annual)
- Professional$79/user/mo (annual)
- Organization$119/user/mo (annual)
- Overage credits$0.20 / credit
- Model
- Per successful result (email 1, mobile 10)
- Free tier
- 50 free trial credits, no card
- Free trial$0
- Starter / ProAbout $29-$55/mo (third-party figures)
- EnterpriseCustom
Vendor-published pricing, verified 2026-06-27 (Apollo.io) and 2026-10-07 (FullEnrich).
SDK and language coverage
Both · 1
REST API (HTTPS / JSON)
Only Apollo.io · 5
OpenAPI / Swagger specificationApollo MCP serverApollo CLIllms.txt index for AI agentsCommunity-built clients (e.g. Ruby gem EnaiaInc/apollo_io), no official first-party language SDKs
Only FullEnrich · 4
OpenAPI specsMCP serverZapier, Make, n8n, Clay, HubSpot integrationsNo official SDKs found
Strengths and weaknesses
- +Large database (275M+ contacts, 73M+ companies) with strong US coverage (~80–88% match accuracy)
- +Aggressive pricing that undercuts ZoomInfo/Lusha-class incumbents for comparable breadth
- +Bulk enrichment endpoints (up to 10 people or companies per call) reduce call volume
- –Data accuracy drops sharply outside the US (~60–73% in EU/APAC/LATAM); stale titles common
- –Phone numbers cost 8 credits each yet user-reported direct-dial accuracy is only ~50–70%
- –Credits expire every billing cycle with no rollover and no refund on unused balance
- +Waterfall across 20+ providers with success-based billing
- +Webhook delivery recommended, plus polling for results
- +v1 and v2 OpenAPI specs and an llms.txt docs index
- –No official SDKs found
- –Mobile reveals cost 10 credits and personal emails 3
- –Enrichment-only: no signals, outreach or native CRM breadth
Apollo.io vs FullEnrich: questions
- Which has better documentation, Apollo.io or FullEnrich?
- Apollo.io and FullEnrich score the same on documentation and developer experience (80).
- Which is more reliable, Apollo.io or FullEnrich?
- Apollo.io scores higher on reliability: 84 vs 66 out of 100.
- Do Apollo.io and FullEnrich have a free tier?
- Apollo.io: yes (10k credits/mo (verified corporate domain) or 100/mo). FullEnrich: yes (50 free trial credits, no card).
- How are Apollo.io and FullEnrich priced?
- Apollo.io: Per credit (email 1, phone 8). FullEnrich: Per successful result (email 1, mobile 10).
- Which has more official SDKs?
- Apollo.io lists 6 official SDKs, FullEnrich lists 5.