ApiOne vs Apollo.io
Apollo.io is a sales engagement platform that includes a large B2B contact and company database. It is primarily designed as a sales tool with built-in sequencing, dialling, and CRM sync — with an API available on higher-tier plans. This comparison focuses on the API use case: teams that want to enrich data programmatically rather than use a sales engagement UI.
Side-by-side comparison
| Feature | ApiOne | Apollo.io |
|---|---|---|
| Company enrichment API | ✅ Included | ✅ Available (paid plans) |
| People enrichment API | ✅ Included | ✅ Available (paid plans) |
| Email finder API | ✅ Included | ✅ Available |
| Tech stack detection API | ✅ Included | ⚠️ Limited |
| Signal detection / intent | ✅ Included | ✅ Included (intent data) |
| Async batch enrichment | ✅ Up to 1,000/job | ⚠️ Via CSV export only |
| Webhook delivery | ✅ Included | ⚠️ Limited |
| API-first design | ✅ Yes — REST API is the product | ❌ API is secondary to the UI |
| Free tier | ✅ 100 credits/month | ✅ Limited free plan |
| Starter plan | ✅ $49/month | $49/month (with UI, sequences, etc.) |
| API access on Starter | ✅ Full API access | ❌ API requires higher plan |
| No UI required | ✅ Fully headless | ❌ Primarily a UI product |
| Query data not logged | ✅ Not logged | ⚠️ Used to improve database |
Pricing comparison
| Plan | ApiOne | Apollo.io |
|---|---|---|
| Free | 100 credits/month | Limited (email credits only) |
| Starter | $49/month — 5,000 enrichment credits, full API | $49/month — UI + sequences, limited API |
| Growth | $149/month — 25,000 credits | $99/month — more credits, still limited API |
| Scale / Professional | $399/month — 100,000 credits | $149/month — full API access |
The key difference: API-first vs sales platform
Apollo.io is built for sales reps who want to find, sequence, and contact leads from a single UI. The API is an add-on for developers who need to pull data into other systems. On Apollo's Starter and Basic plans, API access is restricted or unavailable entirely.
ApiOne is built exclusively for developers and data teams. The REST API is the product — there is no sales engagement UI, no sequencing, and no dialler. Every plan includes full API access from day one.
When to choose ApiOne
- You are a developer building enrichment into a product, pipeline, or internal tool
- You need full API access without paying for a sales engagement UI you will not use
- You need async batch enrichment with webhook delivery
- You want credit-based pricing with no per-seat fees
- You need tech stack detection alongside company and people enrichment
When Apollo.io may be a better fit
- Your sales team wants a single tool for prospecting, sequencing, and dialling
- You need a large contact database for outbound prospecting (Apollo has 275M+ contacts)
- You want built-in email sequencing and CRM sync without writing code