Head to head
Fiber vs FullContact
As a data enrichment API, Fiber rates higher on the APIbenchmarks Index, 69.9 to 68.4, a 1.5-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Fiber | FullContact |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 69.9 | 68.4 |
Specifications
| Fiber | FullContact | |
|---|---|---|
| Best for | Agent-native sales and recruiting data pipelines | Identity resolution / Identity Graph |
| Free tier | No | 100 API calls/mo (Developer plan) |
| Pricing | Credit-based ($0.02/credit) on monthly plans | Per matched API call |
| Official SDKs | 5 languages | 7 languages |
Is Fiber better than FullContact?
On the APIbenchmarks Index, Fiber rates higher (69.9 vs 68.4). 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
Fiber leads by 1.5 points (69.9 vs 68.4) and wins 2 of 4 criteria; FullContact wins 2.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 80 | 70 | |
| Reliability | 60 | 70 | |
| Ecosystem & SDKs | 74 | 62 | |
| Accessibility | 62 | 72 |
Choose Fiber if… / choose FullContact if…
- →documentation & dx matters most to you (80 vs 70)
- →ecosystem & sdks matters most to you (74 vs 62)
- →your use case matches its focus: agent-native sales and recruiting data pipelines
- →reliability matters most to you (70 vs 60)
- →accessibility matters most to you (72 vs 62)
- →you want a free tier to start (100 API calls/mo (Developer plan))
- →you need broad SDK coverage (7 official SDKs vs 5)
- →your use case matches its focus: identity resolution / identity graph
Pricing side by side
- 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
- Model
- Per matched API call
- Free tier
- 100 API calls/mo (Developer plan)
- Developer (Free)$0
- Growth$99/month
- Basic~$500/month
- Premium~$2,000/month
- Enterprise$10,000+/month (custom)
Vendor-published pricing, verified 2026-10-07 (Fiber) and 2026-06-27 (FullContact).
SDK and language coverage
Both · 1
Python (fiberai)
Only Fiber · 4
Node.js / TypeScript (@fiberai/sdk)REST API and OpenAPIMCP servers (v3 OAuth, v2, lite)First-party coding-agent plugin
Only FullContact · 6
Go (official V3 client)Java 8 (official V3 client)Java 11+ (official V3 client)Ruby (archived/legacy)PHP (archived/legacy)Postman collection
Strengths and weaknesses
- +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
- +Multi-field enrichment: accepts many identifier types (email, phone, name+address, social URLs/usernames, MAIDs, plus Resolve PersonIDs) to lift match rates
- +Deep attribute coverage, 900+ appendable data attributes via Person Insights Bundles (demographics, household, employment history, affinities, shopping habits)
- +Tunable confidence: ML 'Belief Vector' lets callers set confidence thresholds per request to balance precision vs. match rate
- –Real-world match rates often far below the advertised 93%, reviewers report ~40-50%, especially outside the U.S.
- –Data-quality complaints of false positives in age, employment, and education fields, with no data-freshness timestamps on attributes
- –Rate limit (~600 queries/min) too low for large batch enrichment jobs
Fiber vs FullContact: questions
- Which has better documentation, Fiber or FullContact?
- Fiber scores higher on documentation and developer experience: 80 vs 70 out of 100.
- Which is more reliable, Fiber or FullContact?
- FullContact scores higher on reliability: 70 vs 60 out of 100.
- Do Fiber and FullContact have a free tier?
- Fiber: no free tier. FullContact: yes (100 API calls/mo (Developer plan)).
- How are Fiber and FullContact priced?
- Fiber: Credit-based ($0.02/credit) on monthly plans. FullContact: Per matched API call.
- Which has more official SDKs?
- FullContact lists 7 official SDKs, Fiber lists 5.