# Green API, free: WhatsApp number check API

> Send and receive text, photo and video using stable WhatsApp API gateway

Green API's Developer plan for the WhatsApp number check API costs $0.00 per 1,000 phones. We check each provider's docs for 6 fields. Green API's docs list 3: On WhatsApp, WhatsApp profile, WhatsApp ID.
You get up to 100 calls a month.
We haven't run a WhatsApp number check API benchmark yet.
This plan is free. We rank 99 plans for WhatsApp number check APIs by price. Half the plans cost $3.20 or less per 1,000 phones.
[ZelNum's $500 pack](https://datacircle.dev/check-whatsapp-apis/zelnum/500-pack-pay-as-you-go-500-top-up-post-detect/llms.txt) costs the least per 1,000 phones: $0.043. [Wawp's €39 yearly plan](https://datacircle.dev/check-whatsapp-apis/wawp/39-yearly/llms.txt) costs the least for 10,000 phones a month: about $3.66.

- This page: https://datacircle.dev/check-whatsapp-apis/green-api/free
- Get it: https://green-api.com/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing#section-prices
- Request: `POST https://api.greenapi.com/waInstance{idInstance}/checkWhatsapp/{apiTokenInstance}`
- API key: with the plan, on https://green-api.com/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing#section-prices
- Its API docs: https://green-api.com/en/docs/api/service/CheckWhatsapp/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- Sold by: Green API (https://green-api.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 50%
- On WhatsApp: ✓
- WhatsApp profile: ✓
- WhatsApp ID: ✓

## Price

- $ per 1,000 phones: $0.00
- Per: call
- Billing: free

## Charges

- Also pays for: Send text · Send video, audio, image, document · Send interactive buttons · Send text status · Create group · Get avatar · Dial call

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Send and receive text, photo and video using stable WhatsApp API gateway

## Data

- Freshness: stored
- What it checks: messaging apps
- Keep data: no limit
- Use data: 8.8. When using the Program and Services, the User shall be prohibited from: [...] 8.8.17. Using, without special written and prior permission from the Licensor, automated scripts (programs) to collect information in the Green-API and (or) interact with Green-API, its services. [...] 8.8.19. Illegal carring out (including in violation of the rules established by the legislation of the Republic of Kazakhstan) the collection and processing of personal data of other persons. [...] 8.8.21. Reproducing, duplicating, coping, selling, trading and reselling the Services for any purpose, except as expressly and previously authorized by the User in accordance with the License Agreement or other separate agreement with the Licensor. 8.8.22. Using the Program, Green-API, Services to carry out mass mailings of electronic and other messages of commercial, advertising and other nature, not agreed (not requested) by the recipient of information. This prohibition shall not include sending information with the consent of the recipient if it is possible to refuse to receive such information in the future. [...] 9.5. The User shall have no right to use the Program in other ways than those specified in this Agreement, as well as copy, sell and resell it or access to it, unless the User has received the prior written permission of the Licensor for this.

## Plan

- Pay: $0
- Enough for: 100 calls a month

## Rate limit

- Per second: 10
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: idInstance, chatId. Optional: force
- Method: POST
- Path: /waInstance{idInstance}/checkWhatsapp/{apiTokenInstance}

## About the plan

- Plan: Developer
- Who can get it: anyone

## The 5 fields the plan's answer can hold

WhatsApp account exists, WhatsApp ID, WhatsApp username, phone number, from cache

## Green API's plans (5)

- [Green API, free](https://datacircle.dev/check-whatsapp-apis/green-api/free/llms.txt): $0.00 per 1,000, 50% complete, stored
- [Green API, $12 monthly](https://datacircle.dev/check-whatsapp-apis/green-api/12-monthly/llms.txt): $0.40 per 1,000, 50% complete, stored
- [Green API, $36 monthly](https://datacircle.dev/check-whatsapp-apis/green-api/36-monthly/llms.txt): $1.20 per 1,000, 50% complete, stored
- [Green API, $144 yearly](https://datacircle.dev/check-whatsapp-apis/green-api/144-yearly/llms.txt): $0.32 per 1,000, 50% complete, stored
- [Green API, $432 yearly](https://datacircle.dev/check-whatsapp-apis/green-api/432-yearly/llms.txt): $0.96 per 1,000, 50% complete, stored

## Green API's calls (1)

- `POST /waInstance{idInstance}/checkWhatsapp/{apiTokenInstance}`: [Green API, free](https://datacircle.dev/check-whatsapp-apis/green-api/free/llms.txt)

## Green API's APIs (1)

- [Green API WhatsApp number check API pricing, 5 plans](https://datacircle.dev/check-whatsapp-apis/green-api/free/llms.txt)

## Green API: WhatsApp number check API alternatives

[Green API alternatives: other WhatsApp number check API providers by price](https://datacircle.dev/green-api-alternatives.txt)

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

- [Listar, free](https://datacircle.dev/check-whatsapp-apis/listar/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [Maytapi, free](https://datacircle.dev/check-whatsapp-apis/maytapi/free/llms.txt): $0.00 per 1,000, 33% complete, live
- [Whapi.Cloud, free](https://datacircle.dev/check-whatsapp-apis/whapi-cloud/free/llms.txt): $0.00 per 1,000, 17% complete, stored
- [Nock, free](https://datacircle.dev/check-whatsapp-apis/nock/free/llms.txt): $0.00 per 1,000, 17% 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 2026-11-02.

- https://green-api.com/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://green-api.com/en/docs/about-tariffs/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://green-api.com/en/docs/api/ratelimiter/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://green-api.com/en/docs/api/recommendations/using-green-api-hosts/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://green-api.com/en/docs/api/service/CheckWhatsapp/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://green-api.com/en/docs/before-start/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing
- https://green-api.com/en/user-agreement?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=whatsapp-number-check-api-pricing