Head to head
Prospeo vs ZoomInfo
As a data enrichment API, Prospeo rates higher on the APIbenchmarks Index, 71.8 to 67.5, a 4.3-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Prospeo | ZoomInfo |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 71.8 | 67.5 |
Specifications
| Prospeo | ZoomInfo | |
|---|---|---|
| Best for | Verified email and mobile finding for outbound | Enterprise B2B intelligence |
| Free tier | 100 credits/mo, API access included | No |
| Pricing | Per credit (email 0.5-1, mobile 10) | Annual contract + bulk credits |
| Official SDKs | 4 languages | 3 languages |
Is Prospeo better than ZoomInfo?
On the APIbenchmarks Index, Prospeo rates higher (71.8 vs 67.5). 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
Prospeo leads by 4.3 points (71.8 vs 67.5) and wins 2 of 4 criteria; ZoomInfo wins 2.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 78 | 70 | |
| Reliability | 66 | 90 | |
| Ecosystem & SDKs | 62 | 72 | |
| Accessibility | 82 | 30 |
Choose Prospeo if… / choose ZoomInfo if…
- →documentation & dx matters most to you (78 vs 70)
- →accessibility matters most to you (82 vs 30)
- →you want a free tier to start (100 credits/mo, API access included)
- →you need broad SDK coverage (4 official SDKs vs 3)
- →your use case matches its focus: verified email and mobile finding for outbound
- →reliability matters most to you (90 vs 66)
- →ecosystem & sdks matters most to you (72 vs 62)
- →your use case matches its focus: enterprise b2b intelligence
Pricing side by side
- 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)
- Model
- Annual contract + bulk credits
- Free tier
- No
- ZoomInfo Lite$0
- Professional~$14,995/year
- Advanced~$24,995-$30,000/year
- Elite$39,995+/year
- Enrichment API (HubSpot Marketplace)from ~$5,000/year
- Full Prospecting / Enterprise APIfrom ~$50,000/year
Vendor-published pricing, verified 2026-10-07 (Prospeo) and 2026-06-27 (ZoomInfo).
SDK and language coverage
Both · 0
None
Only Prospeo · 4
REST APIMCP server (mcp.prospeo.io)Composio and workflow-tool integrationsNo official SDKs found
Only ZoomInfo · 3
Python (official zi_api_auth_client, MIT)Java (PKI auth library)NodeJS (PKI auth library)
Strengths and weaknesses
- +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
- +Deepest enterprise B2B database among enrichment APIs: ~321M+ contacts across 104M+ companies with strong direct-dial and mobile phone coverage
- +Excellent accuracy and coverage for US/North American enterprise contacts (VP+ at 200+ employee firms)
- +Asynchronous Scaling APIs with webhook callbacks handle large batch enrichment jobs cleanly
- –Opaque, sales-gated pricing with five-figure annual minimums (~$50K/year for the full API)
- –Coverage and accuracy drop sharply outside the US/Canada
- –Data freshness is cycle-based (~90-day validation refresh), not real-time, leading to email bounces in cold outreach
Prospeo vs ZoomInfo: questions
- Which has better documentation, Prospeo or ZoomInfo?
- Prospeo scores higher on documentation and developer experience: 78 vs 70 out of 100.
- Which is more reliable, Prospeo or ZoomInfo?
- ZoomInfo scores higher on reliability: 90 vs 66 out of 100.
- Do Prospeo and ZoomInfo have a free tier?
- Prospeo: yes (100 credits/mo, API access included). ZoomInfo: no free tier.
- How are Prospeo and ZoomInfo priced?
- Prospeo: Per credit (email 0.5-1, mobile 10). ZoomInfo: Annual contract + bulk credits.
- Which has more official SDKs?
- Prospeo lists 4 official SDKs, ZoomInfo lists 3.