Fiber AI pricing and alternatives: email finder API, exhaustive/start, Start exhaustive contact details reveal, full

Fiber AI's site llms.txt Best email finder API in 2026

20% complete: 2 of the 10 key fields we checkSee the 10 fields

$0.00per 1,000 emailsThe cheapest of the 681 plans we rank by price is DataForB2B, $499 monthly, at $0.10 per 1,000.

Plan: Cardless API trial one of Fiber AI's 9 plans

Call: POST /v1/contact-details/exhaustive/start, Start exhaustive contact details reveal, full one of Fiber AI's 8 calls

API: Email finder API one of Fiber AI's 11 APIs

About this item

Freshness. We don't know how fresh this plan's data is.
2 of the 10 key fields we check. Verification, Personal email.
Nothing to pay. You get 100 credits once, enough for about 8 calls. Unused credits expire when the 7 days pass without a card, the trial ends.
One call. You send linkedinUrl to POST /v1/contact-details/exhaustive/start. The call returns a job. You fetch the answer once the job is done. Or the provider sends the answer to your webhook.
Who can get it: with conditions. Keep data: with conditions. Use data: with conditions.

Fiber AI: email finder API alternatives

The table starts with Fiber AI's cheapest paid plan. Next come plans from other providers with the price per 1,000 emails closest to Fiber AI's.

	Fiber AI, $24,000 yearly, Enterprise, POST /v1/contact-details/exhaustive/start, Start exhaustive contact details reveal, full	lobstr.io, $1,000 monthly, Business, POST /v1/runs, Sales Nav Profile Scraper, full	SignalHire, $69 monthly, Emails & Phones	Anysite, $49 monthly, Starter, POST /api/linkedin/user/find_email_by_url	La Growth Machine, $1,980 yearly
$ per 1,000	$160.00	$155.00	$158.621	$163.333	$165.00
Completeness	20%	60%	60%	40%	10%
Billing	yearly	monthly	monthly	monthly	yearly
Pay	$24,000	$1,000	$69	$49	$1,980
Enough for	12,500 calls a month	about 6,451 results a month	435 results a month	300 calls a month	1,000 calls a month
Freshness	unknown	live	live	unknown	unknown
Who can get it	anyone, to use only in the United States	professionals, not consumers, through their own LinkedIn Sales Navigator account synced to lobstr.io	anyone acting in a business capacity	anyone at least 18 years old or of the age of majority in their jurisdiction	anyone for professional use

Every email finder API provider we score, ranked

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-23.

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

Verification
Confidence, not in the answer
Catch-all domain, not in the answer
Where found, not in the answer
Personal email
Name, not in the answer
Job title, not in the answer
Company, not in the answer
LinkedIn URL, not in the answer
Location, not in the answer

Price
$ per 1,000	$0.00
Billing	free

Aggregators
Aggregators	none

Charges
Per	call

Not found
$ per 1,000	$0.00

In their words
Their pitch	Maximum-coverage contact reveal — runs multiple enrichment sources in parallel for the highest yield. This is our SLOWEST endpoint by design: expect to wait roughly 2–3 minutes for results. This is an asynchronous operation — call it to start the task, then poll /contact-details/exhaustive/poll with the returned task ID every 15–30 seconds. Do NOT use this endpoint in time-sensitive flows. If speed matters, use /contact-details/turbo/sync (fastest), /contact-details/single (balanced), or /contact-details/lite (cheapest) instead — exhaustive is for when maximum coverage is worth the wait.

Data
Keep data	a limited, non-exclusive, non-transferable, non-sublicensable right to (A) view and store the Prospect Data [...] Prospect Data and Usage Data are Confidential Information of Fiber AI. [...] After any expiration or termination of these Terms, or at any time upon request from Fiber AI, Customer will immediately return or destroy (at Fiber AI's sole direction) all materials or media containing any Confidential Information
Use data	solely for purposes of conducting business-to-business sales, marketing, or business development activities and for Customer's other internal business purposes (the "Permitted Uses"). Customer may not resell, transfer, assign, or sublicense Customer's rights under these Terms to any third party or use the Services to run an outsourcing business or provide services for the benefit of any third party. [...] Customer (A) will not, and will ensure that Customer Personnel do not, incorporate any Prospect Data into Customer's products or services or otherwise resell, sublicense, or distribute any Prospect Data, (B) will not [...] present the Prospect Data so that it appears to be made available by any third party, (C) will process all Prospect Data in accordance with Laws, including Privacy and Data Laws [...] (F) not use the Services, including Prospect Data, to determine a consumer’s eligibility for (i) credit or insurance for personal, family or household purposes, (ii) employment or (iii) a government license or benefit or (iv) any other purpose governed by the Fair Credit Reporting Act [...] Customer will not [...] (h) develop any scripts or software applications that interact with or integrate with the Services unless first authorized in writing by Fiber AI [...] The Services are currently authorized to be used only in the United States to facilitate business-to-business sales, marketing, or business development communications with individuals in the United States

Plan
Pay	$0
You get	100 credits
Enough for	about 8 calls, once
Expires	when the 7 days pass without a card, the trial ends

Rate limit
Per second	2
Batch	1

Speed
Answer	by polling or webhook

The call
You send	linkedinUrl. Optional: enrichmentType.getWorkEmails, enrichmentType.getPersonalEmails "true", enrichmentType.getPhoneNumbers "true"
Method	POST
Path	/v1/contact-details/exhaustive/start

About the plan
Plan	Cardless API trial
Who can get it	anyone with a work email, one trial per company domain, to use only in the United States

The 11 fields the plan's answer can hold

email, email type, email status, low quality email, low quality email type, low quality email status, exhaustive, found other types, personal email, phone number, phone type