The short answer
Fiber is billed credit-based ($0.02/credit) on monthly plans. It has no free tier (7-day trial (card required per pricing page; cardless quickstart on homepage)). The paid plans we list start at $300/mo (Prospector).
Plans and prices
| Plan | Price | What it covers |
|---|---|---|
| Prospector | $300/mo | 15,000 credits; full API access; 17% off annually. |
| Growth | $900/mo | 50,000 credits. |
| Enterprise | $2,400/mo | 150,000 credits. |
| Bulk / datasets | From $1,000/mo (datasets) | High-volume search (500K-unlimited credits) and pre-built datasets from 500K entities. |
| Trial | $0 for 7 days | Full product access; payment method required per pricing page, not charged until day 8. |
How Fiber bills you
The pricing model is credit-based ($0.02/credit) on monthly plans. Y Combinator-backed API-first B2B data platform (40M+ companies, 850M+ people) with agent-native docs, Node and Python SDKs and three MCP servers, but a $300/month minimum, a card-required trial and thin public track record. Best suited to: agent-native sales and recruiting data pipelines.
What to watch for on the bill
- No free tier; entry plan $300/month
- Trial requirements conflict between homepage and pricing page
- Contact reveals cost 2-5 credits each
The pricing page we read

Source: https://www.fiber.ai/pricing. Prices change, so confirm there before you commit.
Compare Fiber with alternatives
Other data enrichment apis: Crustdata, People Data Labs, Bright Data, Apollo.io, Hunter.
Looking at quality rather than price? See the Fiber score on APIbenchmarks. Full entry: Fiber pricing.