Head to head
Apollo.io vs Prospeo
As a data enrichment API, Apollo.io rates higher on the APIbenchmarks Index, 80.1 to 71.8, a 8.3-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Apollo.io | Prospeo |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 80.1 | 71.8 |
Specifications
| Apollo.io | Prospeo | |
|---|---|---|
| Best for | Sales engagement plus enrichment | Verified email and mobile finding for outbound |
| Free tier | 10k credits/mo (verified corporate domain) or 100/mo | 100 credits/mo, API access included |
| Pricing | Per credit (email 1, phone 8) | Per credit (email 0.5-1, mobile 10) |
| Official SDKs | 6 languages | 4 languages |
Is Apollo.io better than Prospeo?
On the APIbenchmarks Index, Apollo.io rates higher (80.1 vs 71.8). 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 8.3 points (80.1 vs 71.8) and wins 3 of 4 criteria; Prospeo wins 1.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 80 | 78 | |
| Reliability | 84 | 66 | |
| Ecosystem & SDKs | 78 | 62 | |
| Accessibility | 78 | 82 |
Choose Apollo.io if… / choose Prospeo if…
- →documentation & dx matters most to you (80 vs 78)
- →reliability matters most to you (84 vs 66)
- →ecosystem & sdks matters most to you (78 vs 62)
- →you need broad SDK coverage (6 official SDKs vs 4)
- →your use case matches its focus: sales engagement plus enrichment
- →accessibility matters most to you (82 vs 78)
- →your use case matches its focus: verified email and mobile finding for outbound
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 credit (email 0.5-1, mobile 10)
- Free tier
- 100 credits/mo, API access included
- Free$0
- StarterAbout $49/mo ($37/mo annual)
- GrowthAbout $99/mo ($74/mo annual)
- ProAbout $249/mo ($187/mo annual)
Vendor-published pricing, verified 2026-06-27 (Apollo.io) and 2026-10-07 (Prospeo).
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 Prospeo · 3
MCP server (mcp.prospeo.io)Composio and workflow-tool 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
- +Free API access stated in the docs
- +Plan-tiered published rate limits and per-endpoint credit costs
- +Search over 200M+ contacts and 30M+ companies with 30+ filters
- –Unused credits expire every billing cycle
- –Per-user pricing multiplies for teams
- –Mobile reveals cost 10 credits
Apollo.io vs Prospeo: questions
- Which has better documentation, Apollo.io or Prospeo?
- Apollo.io scores higher on documentation and developer experience: 80 vs 78 out of 100.
- Which is more reliable, Apollo.io or Prospeo?
- Apollo.io scores higher on reliability: 84 vs 66 out of 100.
- Do Apollo.io and Prospeo have a free tier?
- Apollo.io: yes (10k credits/mo (verified corporate domain) or 100/mo). Prospeo: yes (100 credits/mo, API access included).
- How are Apollo.io and Prospeo priced?
- Apollo.io: Per credit (email 1, phone 8). Prospeo: Per credit (email 0.5-1, mobile 10).
- Which has more official SDKs?
- Apollo.io lists 6 official SDKs, Prospeo lists 4.