Fiber AI pricing and alternatives: email finder API, POST /v1/contact-details/lite

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

30% complete: 3 of the 10 key fields we checkSee the 10 fields

found live

$0.00per 1,000 emails

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

Call: POST /v1/contact-details/lite one of Fiber AI's 6 calls

API: Email finder API one of Fiber AI's 9 APIs

About this item

Live. The provider finds the email when you call.
3 of the 10 key fields we check. Verification, Confidence, Catch-all domain.
Nothing to pay. You get 100 credits once, enough for 100 calls. Unused credits expire when the 7 days pass without a card, the trial ends.
One call. You send input.linkedinIdentifier to POST /v1/contact-details/lite. You set input.mode to "linkedin". You can also send input.fullName, enrichmentType, company.identifier, company.value and patience. The call returns the email.
Who can get it: with conditions. Keep data: with conditions. Use data: with conditions.

Fiber AI: email finder API alternatives

We list other providers' plans closest to this plan in price per 1,000 emails. Each plan in the table gives live data, like this plan.

	This planFiber AI, free, Cardless API trial, POST /v1/contact-details/lite	Enrich.so, free, Free, POST /email-finder	Clearout, free	Anymail Finder, free	BetterEnrich, free, 100 credits free, POST /api/v1/find-personal-email
$ per 1,000	$0.00	$0.00	$0.00	$0.00	$0.00
Completeness	30%	40%	30%	40%	10%
Billing	free	free	free	free	free
Pay	$0	$0	$0	$0	$0
Enough for	100 calls, once	10 calls, once	25 calls, once	100 calls, once	25 calls, once
Freshness	live	live	live	live	live
Who can get it	anyone with a work email, one trial per company domain, to use only in the United States	anyone 18 or over, on a new account, for an organization, someone with authority to bind it	anyone	businesses only, once per person, on picking a monthly plan with a card checked but not charged, subject to fraud checks	anyone, for lawful business purposes only

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
Catch-all domain
Where found, not in the answer
Personal email, not in the answer
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

Strengths
Strengths	found live

Aggregators
Aggregators	none

Charges
Per	call

Not found
$ per 1,000	$0.00

In their words
Their pitch	Low-cost contact reveal path that searches for emails and phone numbers. Compared with other contact reveal endpoints, this endpoint is priced lower but has lower yield (it may miss contacts that other endpoints can find).

Data
Freshness	live
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	100 calls, once
Expires	when the 7 days pass without a card, the trial ends

Rate limit
Per second	8.33
Batch	1

Speed
Answer	in the call

The call
You send	input.mode "linkedin", input.linkedinIdentifier. Optional: input.fullName, enrichmentType, company.identifier, company.value, patience
Method	POST
Path	/v1/contact-details/lite

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 8 fields the plan's answer can hold

email, email type, email status, deliverability score, catch-all, unmatched work email, unmatched work email type, unmatched work email status