Head to head
ContactOut vs ZoomInfo
As a data enrichment API, ZoomInfo rates higher on the APIbenchmarks Index, 67.5 to 55, a 12.5-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | ContactOut | ZoomInfo |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 55.0 | 67.5 |
Specifications
| ContactOut | ZoomInfo | |
|---|---|---|
| Best for | LinkedIn-based email and phone lookup for recruiters and sales | Enterprise B2B intelligence |
| Free tier | 5 emails, 5 phones, 5 exports/day in the app; API not included | No |
| Pricing | Credits (search, email, phone) on a quoted API plan | Annual contract + bulk credits |
| Official SDKs | 4 languages | 3 languages |
Is ContactOut better than ZoomInfo?
On the APIbenchmarks Index, ZoomInfo rates higher (67.5 vs 55). 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
ZoomInfo leads by 12.5 points (67.5 vs 55) and wins 2 of 4 criteria; ContactOut wins 1.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 70 | 70 | Tie |
| Reliability | 58 | 90 | |
| Ecosystem & SDKs | 50 | 72 | |
| Accessibility | 35 | 30 |
Choose ContactOut if… / choose ZoomInfo if…
- →accessibility matters most to you (35 vs 30)
- →you want a free tier to start (5 emails, 5 phones, 5 exports/day in the app; API not included)
- →you need broad SDK coverage (4 official SDKs vs 3)
- →your use case matches its focus: linkedin-based email and phone lookup for recruiters and sales
- →reliability matters most to you (90 vs 58)
- →ecosystem & sdks matters most to you (72 vs 50)
- →your use case matches its focus: enterprise b2b intelligence
Pricing side by side
- Model
- Credits (search, email, phone) on a quoted API plan
- Free tier
- 5 emails, 5 phones, 5 exports/day in the app; API not included
- Free$0
- Email~$49-$99/mo (sources conflict)
- Email + Phone~$99-$199/mo (sources conflict)
- Team / APICustom quote
- 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 (ContactOut) and 2026-06-27 (ZoomInfo).
SDK and language coverage
Both · 0
None
Only ContactOut · 4
REST API (token header auth)Webhooks for async bulk v2Third-party MCP via Composio and viaSocketNo official SDKs or OpenAPI spec found
Only ZoomInfo · 3
Python (official zi_api_auth_client, MIT)Java (PKI auth library)NodeJS (PKI auth library)
Strengths and weaknesses
- +Public API reference with auth, endpoint credit rules and per-endpoint rate limits
- +Bulk enrichment up to 1,000 profiles per v2 job with webhook delivery
- +Boolean search, decision-maker and company endpoints plus email and phone verification
- –API is not on self-serve plans; Team/API requires a custom quote
- –Free app plan (5/5/5 per day) does not include API access
- –962 outages tracked by StatusGator over the past year, with a minor outage on the verification date
- +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
ContactOut vs ZoomInfo: questions
- Which has better documentation, ContactOut or ZoomInfo?
- ContactOut and ZoomInfo score the same on documentation and developer experience (70).
- Which is more reliable, ContactOut or ZoomInfo?
- ZoomInfo scores higher on reliability: 90 vs 58 out of 100.
- Do ContactOut and ZoomInfo have a free tier?
- ContactOut: yes (5 emails, 5 phones, 5 exports/day in the app; API not included). ZoomInfo: no free tier.
- How are ContactOut and ZoomInfo priced?
- ContactOut: Credits (search, email, phone) on a quoted API plan. ZoomInfo: Annual contract + bulk credits.
- Which has more official SDKs?
- ContactOut lists 4 official SDKs, ZoomInfo lists 3.