Head to head
Apollo.io vs Fiber
As a data enrichment API, Apollo.io rates higher on the APIbenchmarks Index, 80.1 to 69.9, a 10.2-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Apollo.io | Fiber |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 80.1 | 69.9 |
Specifications
| Apollo.io | Fiber | |
|---|---|---|
| Best for | Sales engagement plus enrichment | Agent-native sales and recruiting data pipelines |
| Free tier | 10k credits/mo (verified corporate domain) or 100/mo | No |
| Pricing | Per credit (email 1, phone 8) | Credit-based ($0.02/credit) on monthly plans |
| Official SDKs | 6 languages | 5 languages |
Is Apollo.io better than Fiber?
On the APIbenchmarks Index, Apollo.io rates higher (80.1 vs 69.9). 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 10.2 points (80.1 vs 69.9) and wins 3 of 4 criteria.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 80 | 80 | Tie |
| Reliability | 84 | 60 | |
| Ecosystem & SDKs | 78 | 74 | |
| Accessibility | 78 | 62 |
Choose Apollo.io if… / choose Fiber if…
- →reliability matters most to you (84 vs 60)
- →ecosystem & sdks matters most to you (78 vs 74)
- →accessibility matters most to you (78 vs 62)
- →you want a free tier to start (10k credits/mo (verified corporate domain) or 100/mo)
- →you need broad SDK coverage (6 official SDKs vs 5)
- →your use case matches its focus: sales engagement plus enrichment
- →your use case matches its focus: agent-native sales and recruiting data pipelines
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
- Credit-based ($0.02/credit) on monthly plans
- Free tier
- No
- Prospector$300/mo
- Growth$900/mo
- Enterprise$2,400/mo
- Bulk / datasetsFrom $1,000/mo (datasets)
- Trial$0 for 7 days
Vendor-published pricing, verified 2026-06-27 (Apollo.io) and 2026-10-07 (Fiber).
SDK and language coverage
Both · 0
None
Only Apollo.io · 6
REST API (HTTPS / JSON)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 Fiber · 5
Node.js / TypeScript (@fiberai/sdk)Python (fiberai)REST API and OpenAPIMCP servers (v3 OAuth, v2, lite)First-party coding-agent plugin
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
- +Official Node (@fiberai/sdk) and Python (fiberai) SDKs
- +Three MCP servers (v3 OAuth, v2 API key, lite) and a first-party plugin
- +Agent-native docs: per-operation markdown, llms.txt and openapi.json
- –No free tier; entry plan $300/month
- –Trial requirements conflict between homepage and pricing page
- –No confirmed official status page or SLA
Apollo.io vs Fiber: questions
- Which has better documentation, Apollo.io or Fiber?
- Apollo.io and Fiber score the same on documentation and developer experience (80).
- Which is more reliable, Apollo.io or Fiber?
- Apollo.io scores higher on reliability: 84 vs 60 out of 100.
- Do Apollo.io and Fiber have a free tier?
- Apollo.io: yes (10k credits/mo (verified corporate domain) or 100/mo). Fiber: no free tier.
- How are Apollo.io and Fiber priced?
- Apollo.io: Per credit (email 1, phone 8). Fiber: Credit-based ($0.02/credit) on monthly plans.
- Which has more official SDKs?
- Apollo.io lists 6 official SDKs, Fiber lists 5.