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

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

18% complete: 2 of the 11 key fields we checkSee the 11 fields

$0.00per 1,000 phones

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

About this item

Live. The call finds the phone when you make it.
2 of the 11 key fields we check. Number, Line type.
Nothing to pay. You get 100 credits once, enough for 50 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" and enrichmentType.getPhoneNumbers to "true". You can also send input.fullName, company.identifier, company.value and patience. The call returns the phone number.
Who can get it: with conditions. Keep data: with conditions. Use data: with conditions.

Fiber AI: phone finder API alternatives

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

	This planFiber AI, free, Cardless API trial, POST /v1/contact-details/lite	FullEnrich, free	LoneScale, free, Free, POST /trigger/enrich	Findymail, free	lemlist, free
$ per 1,000	$0.00	$0.00	$0.00	$0.00	$0.00
Completeness	18%	91%	64%	18%	9%
Billing	free	free	free	free	free
Pay	$0	$0	$0	$0	$0
Enough for	50 calls, once	5 results, once	not published	not published	10 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	companies, on a first account only, not a covered person or a resident of a country of concern under the US DOJ rule	any natural or legal person, a natural person uses it for their professional activity, and LoneScale's moderation team validates the account	anyone 18 or over	professionals 18 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.

Number
Line type
Verification, not in the answer
Do not call, not in the answer
Country, not in the answer
Name, not in the answer
Job, not in the answer
Links, not in the answer
Place, not in the answer
Company, not in the answer
Email, not in the answer

Price
$ per 1,000	$0.00
Billing	free

Aggregators
Aggregators	none

Charges
Per	call
Also pays for	Export audience companies to CSV · Export audience prospects to CSV · from the same budget: Work email reveal · Personal email reveal · Phone number reveal · Live company fetch · Live fetch (batch start) · Company search result · People search result · Job posting search · Company count · People count · Job posting count · Agentic / natural-language search · Google Maps / local business · Investor search · Combined search · Audience build · Audience enrichment · Tracker entity check · Full reverse email lookup · Lite reverse email lookup · Kitchen Sink resolution · Hashed email lookup · Hotel search page · Hotel property lookup

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	50 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, enrichmentType.getPhoneNumbers "true". Optional: input.fullName, 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 2 fields the plan's answer can hold

phone number, phone type