Fiber.ai

Search Fiber.ai’s B2B database for companies, people, and LinkedIn profiles.

Fiber.ai is a B2B data platform with fresh data on 40M+ companies, 850M+ people, and 30M+ jobs. Search live company, people, and job data, and enrich incomplete records with work emails, personal emails, and phone numbers.

Use it for

• Cleaning up a CRM by reverse-looking-up a work or personal email to a person, or enriching a partial company/person record.
• Tracking real-time LinkedIn signals: job changes, promotions, new jobs, headcount changes, and fundraising.
• Finding relevant posts across LinkedIn, X, Instagram, TikTok, Reddit, and YouTube, pulling their comments and reactions, then enriching the authors’ contact info.
• Searching across 40M+ companies and 850M+ people and enriching prospects with work email, personal email, and phone numbers.

Provider ID

Use this value in dataSources:

fiber

Pricing

Fiber.ai bills in credits at $0.02 / credit, and each call is charged the credits Fiber reports for it:

Operation	Credits
Search	2 + 1 per result returned
Company lookup	~2 per candidate returned
Person lookup / email reverse lookup	2
Contact reveal	2 (work email) – 5 (phone)

Calls that return no match (or whose charge Fiber refunds) are free. Parameter choices change the price: a company lookup’s numResults sets how many candidates you pay for, and a search’s result count drives most of its cost.

Example

Build a B2B prospecting list of Series A fintech companies in New York with 50–200 employees.

Python

from exa_py import Exa

exa = Exa()
run = exa.agent.runs.create(
    query="I'm building a B2B sales prospecting list using a B2B company database. Find Series A fintech companies in New York with 50-200 employees, and for each return the company's LinkedIn profile, domain, employee count, and funding stage.",
    data_sources=[{"provider": "fiber"}],
    output_schema={
        "type": "object",
        "required": ["companies"],
        "properties": {
            "companies": {
                "type": "array",
                "maxItems": 10,
                "items": {
                    "type": "object",
                    "required": ["name", "domain", "employeeCount", "fundingStage"],
                    "properties": {
                        "name": {"type": "string"},
                        "domain": {"type": "string"},
                        "employeeCount": {"type": "number"},
                        "fundingStage": {"type": "string"},
                    },
                },
            }
        },
    },
)
run = exa.agent.runs.poll_until_finished(run.id)

Pairs well with

• Similarweb: size up a prospect’s web presence and competitors.
• Baselayer: verify officers and registrations for shortlisted US businesses.
• Particle: find what podcasts are saying about a company or executive.