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

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 emails

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

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

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

About this item

Freshness. Fiber AI doesn't say how fresh an email is.
2 of the 10 key fields we check. 1 is in the plan's price: Verification. 1 costs extra: Personal email.
Nothing to pay. You get 100 credits once, enough for 20 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. You can also send enrichmentType. 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

We list other providers' plans closest to this plan in price per 1,000 emails.

	This planFiber AI, free, Cardless API trial, POST /v1/contact-details/exhaustive/start	Icypeas, free, trial, POST /bulk-search	Enrich.so, free, Free, POST /lead-finder/enrich	AnyAPI, free, trial key, POST /v1/run/linkedin.email	treg, free, $1.00 free to start, POST /call/treg.people.email.find
$ per 1,000	$0.00	$0.00	$0.00	$0.00	$0.00
Completeness	20%	20%	50%	50%	30%
Billing	free	free	free	free	free
Pay	$0	$0	$0	$0	$0
Enough for	20 calls, once	50 results, once	10 results, once	about 4 calls, once	about 179 calls, once
Who can get it	anyone with a work email, one trial per company domain, to use only in the United States	business use only (strictly B2B), over the age of 13	anyone 18 or over, on a new account, for an organization, someone with authority to bind it	anyone 18 or over, with no account, for business or professional use, not in an embargoed jurisdiction or on a restricted-party list	a new account once its email is verified, for one team (aliases of one inbox share one), 16 or over

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 emailcosts more
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
Extra fields	personal email: +$0.00 · personal email, phone number, phone type: +$0.00

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	20 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
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 8 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