# LeadSonar, $79 monthly: Phone finder API

> a separate parallel phone cascade with carrier and line-type validation

LeadSonar's Growth plan for the phone finder API costs $0.316 per 1,000 phones. We check each provider's docs for 11 fields. LeadSonar's docs list 1: Number.
We haven't run LeadSonar through [our phone finder API benchmark](https://datacircle.dev/best-phone-finder-api.txt) yet.
We rank 774 plans for phone finder APIs by price. Half the plans cost $242.50 or less per 1,000 phones. This plan costs less per 1,000 phones than 96% of the 774 plans.
[QuickEnrich's $399 monthly plan](https://datacircle.dev/find-phone-apis/quickenrich/399-monthly/llms.txt) costs the least per 1,000 phones. QuickEnrich's $399 monthly plan charges nothing per call. You get as many phones as QuickEnrich's rate limit allows. [StableEnrich's pay-as-you-go plan](https://datacircle.dev/find-phone-apis/stableenrich/pay-as-you-go-pay-per-request-with-x402-or-mpp-post-api-minerva-enrich/llms.txt) costs the least for 10,000 phones a month: $1.00.
[MillionPhones](https://datacircle.dev/find-phone-apis/millionphones/300-monthly-pro-40000-credits-mo-get-phone/llms.txt), [AI Ark](https://datacircle.dev/find-phone-apis/ai-ark/119-monthly-usage-based-plan-30000-credits-month-post-v1-people-mobile-phone-finder/llms.txt) and [Skrapp](https://datacircle.dev/find-phone-apis/skrapp/349-monthly-enterprise-50k-get-api-v3-people-phone/llms.txt) are the best phone finder API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/find-phone-apis/leadsonar/79-monthly
- [Phone finder API in 2026: the best of 30+ providers compared](https://datacircle.dev/best-phone-finder-api.txt)
- Get it: https://leadsonar.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- Request: Docs behind sign-up
- API key: with the plan, on https://leadsonar.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- Its API docs: https://leadsonar.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- Sold by: LeadSonar (https://leadsonar.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 9%
- Number: ✓

## Price

- $ per 1,000 phones: $0.316
- Per: call
- Billing: monthly
- $ a month: $79

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Employee email · Email validation

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: a separate parallel phone cascade with carrier and line-type validation

## Data

- Freshness: live
- Keep data: no period set while your account is open, on termination (8): "you must stop using data obtained through it except where you have an independent lawful basis to keep it"
- Use data: 4: You must: have and maintain your own lawful basis for contacting the people whose data you obtain, and comply with the GDPR, the ePrivacy rules and any other law that applies to your outreach, honour objections and opt-out requests you receive, promptly and across your systems, identify yourself accurately in the messages you send, and provide a working means to opt out, keep the data secure and limit access to those who need it. You must not: use the data to contact people in a consumer capacity, or for any purpose outside business-to-business communication, resell, redistribute or publish the data, or use it to build or enrich a competing database, use the data for harassment, deception, discrimination, or any unlawful purpose, scrape, bulk-export or otherwise extract the database beyond the credits and exports your plan allows, circumvent credit limits, rate limits or access controls, including by opening multiple accounts to obtain repeated free trials, interfere with the operation, security or integrity of the service.

## Plan

- Pay: $79
- You get: 250,000 credits a month
- Enough for: 250,000 calls a month

## The call

- You send: Docs behind sign-up

## About the plan

- Plan: Growth
- Who can get it: anyone

## The only field the plan's answer can hold

phone

## LeadSonar's plans (4)

- [LeadSonar, $79 monthly](https://datacircle.dev/find-phone-apis/leadsonar/79-monthly/llms.txt): $0.316 per 1,000, 9% complete, live
- [LeadSonar, $199 monthly](https://datacircle.dev/find-phone-apis/leadsonar/199-monthly/llms.txt): $0.249 per 1,000, 9% complete, live
- [LeadSonar, $499 monthly](https://datacircle.dev/find-phone-apis/leadsonar/499-monthly/llms.txt): $0.25 per 1,000, 9% complete, live
- [LeadSonar, contact us](https://datacircle.dev/find-phone-apis/leadsonar/contact-us/llms.txt): 9% complete, live

## LeadSonar's calls for this API (1)

- Docs behind sign-up: [LeadSonar, $79 monthly](https://datacircle.dev/find-phone-apis/leadsonar/79-monthly/llms.txt)

## LeadSonar's APIs (5)

- [LeadSonar: email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/leadsonar/79-monthly/llms.txt)
- [LeadSonar: email finder API pricing, 4 plans](https://datacircle.dev/find-email-apis/leadsonar/79-monthly/llms.txt)
- [LeadSonar: phone finder API pricing, 4 plans](https://datacircle.dev/find-phone-apis/leadsonar/79-monthly/llms.txt)
- [LeadSonar: people search API pricing, 4 plans](https://datacircle.dev/people-search-apis/leadsonar/79-monthly/llms.txt)
- [LeadSonar: people enrichment API pricing, 4 plans](https://datacircle.dev/person-enrichment-apis/leadsonar/79-monthly/llms.txt)

## LeadSonar: phone finder API alternatives

- [Fiber AI, free, 7-day free trial, POST /v1/contact-details/lite](https://datacircle.dev/find-phone-apis/fiber-ai/free-7-day-free-trial-post-v1-contact-details-lite/llms.txt): $0.00 per 1,000, 18% complete, live
- [SyncGTM, free](https://datacircle.dev/find-phone-apis/syncgtm/free/llms.txt): $0.00 per 1,000, 9% complete, live
- [BetterEnrich, free](https://datacircle.dev/find-phone-apis/betterenrich/free/llms.txt): $0.00 per 1,000, 36% complete, live
- [LoneScale, free, POST /trigger/enrich/sync](https://datacircle.dev/find-phone-apis/lonescale/free-free-post-trigger-enrich-sync/llms.txt): $0.00 per 1,000, 64% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-08.

- https://leadsonar.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- https://leadsonar.io/agent.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- https://leadsonar.io/alternative/best-b2b-data-enrichment-tools.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- https://leadsonar.io/alternative/fullenrich.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- https://leadsonar.io/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- https://leadsonar.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- https://leadsonar.io/pricing.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing
- https://leadsonar.io/terms.html?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-finder-api-pricing