Head to head
Coresignal vs Fiber
As a data enrichment API, Coresignal rates higher on the APIbenchmarks Index, 75.2 to 69.9, a 5.3-point gap. Here is how they compare on each criterion.
Criterion by criterion
| Criterion | Coresignal | Fiber |
|---|---|---|
| Documentation & DX | ||
| Reliability | ||
| Ecosystem & SDKs | ||
| Accessibility | ||
| APIbenchmarks Index | 75.2 | 69.9 |
Specifications
| Coresignal | Fiber | |
|---|---|---|
| Best for | Raw professional and jobs data for engineering teams | Agent-native sales and recruiting data pipelines |
| Free tier | No | No |
| Pricing | Monthly credit subscription (Collect + Search credits) | Credit-based ($0.02/credit) on monthly plans |
| Official SDKs | 5 languages | 5 languages |
Is Coresignal better than Fiber?
On the APIbenchmarks Index, Coresignal rates higher (75.2 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
Coresignal leads by 5.3 points (75.2 vs 69.9) and wins 2 of 4 criteria; Fiber wins 1.
Winner by criterion
| Criterion | Winner | ||
|---|---|---|---|
| Documentation & DX | 80 | 80 | Tie |
| Reliability | 78 | 60 | |
| Ecosystem & SDKs | 66 | 74 | |
| Accessibility | 76 | 62 |
Choose Coresignal if… / choose Fiber if…
- →reliability matters most to you (78 vs 60)
- →accessibility matters most to you (76 vs 62)
- →your use case matches its focus: raw professional and jobs data for engineering teams
- →ecosystem & sdks matters most to you (74 vs 66)
- →your use case matches its focus: agent-native sales and recruiting data pipelines
Pricing side by side
- Model
- Monthly credit subscription (Collect + Search credits)
- Free tier
- No
- Free trial$0
- Mini$49/mo
- Starter$199/mo
- Pro$499/mo
- Growth to Elite$1,000 to $5,000/mo
- DatasetsFrom $1,000+
- 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 2026-10-07 (Coresignal) and 2026-10-07 (Fiber).
SDK and language coverage
Both · 0
None
Only Coresignal · 5
REST API (HTTPS / JSON)Coresignal MCP server (Node.js via mcp-remote)API playgrounds (web)llms.txt / llms-full.txt documentation exportsNo official language SDKs found
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
- +Transparent self-serve credit plans from $49/month, no sales call to start
- +Quickstart, API playgrounds, rate-limit reference and llms.txt/llms-full.txt exports in the docs
- +Official MCP server for Claude, Cursor and other MCP clients
- –No official language SDKs, OpenAPI spec page or Postman collection found in the docs index
- –Free access is a 7-day trial only, not a recurring free tier
- –Company data refreshes roughly monthly per third-party reviews; no direct-dial phone numbers
- +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
Coresignal vs Fiber: questions
- Which has better documentation, Coresignal or Fiber?
- Coresignal and Fiber score the same on documentation and developer experience (80).
- Which is more reliable, Coresignal or Fiber?
- Coresignal scores higher on reliability: 78 vs 60 out of 100.
- Do Coresignal and Fiber have a free tier?
- Coresignal: no free tier. Fiber: no free tier.
- How are Coresignal and Fiber priced?
- Coresignal: Monthly credit subscription (Collect + Search credits). Fiber: Credit-based ($0.02/credit) on monthly plans.
- Which has more official SDKs?
- Both list 5 official SDKs.