# Green API, free: Phone validation API

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

Green API's phone validation API on its Developer plan. It costs $0.00 per 1,000 phones. It returns 1 of the 9 key fields we check: Number.
You get up to 100 calls a month.
We haven't run Green API through [our phone validation API benchmark](https://datacircle.dev/best-phone-validation-api.txt) yet.
This plan is free. We rank 888 plans for phone validation APIs by price. Half the plans cost $3.376 per 1,000 phones or less.
[Botoi's $199 monthly plan](https://datacircle.dev/validate-phone-apis/botoi/199-monthly/llms.txt) is the cheapest paid plan per 1,000 phones: as little as $0.0066. Botoi's $199 monthly plan covers up to 1,000,000 phones a day.
[Data247](https://datacircle.dev/validate-phone-apis/data247/12-pack-membership-get-v3-0-verify247-phone/llms.txt), [Foxentry](https://datacircle.dev/validate-phone-apis/foxentry/top-up-pay-as-you-go-post-phone-validate-validate-phone-number-extended/llms.txt) and [HLR Lookups](https://datacircle.dev/validate-phone-apis/hlr-lookups/top-up-1-1m-post-hlr-lookup/llms.txt) are the best phone validation API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-phone-apis/green-api/free
- [Phone validation API: 40+ providers compared](https://datacircle.dev/best-phone-validation-api.txt)
- Get it: https://green-api.com/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-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=phone-validation-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=phone-validation-api-pricing
- Sold by: Green API (https://green-api.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=phone-validation-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 11%
- Number: ✓

## Price

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

## Aggregators

- Aggregators: none

## 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: $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/validate-phone-apis/green-api/free/llms.txt): $0.00 per 1,000, 11% complete, stored
- [Green API, $12 monthly](https://datacircle.dev/validate-phone-apis/green-api/12-monthly/llms.txt): $0.40 per 1,000, 11% complete, stored
- [Green API, $36 monthly](https://datacircle.dev/validate-phone-apis/green-api/36-monthly/llms.txt): $1.20 per 1,000, 11% complete, stored
- [Green API, $144 yearly](https://datacircle.dev/validate-phone-apis/green-api/144-yearly/llms.txt): $0.32 per 1,000, 11% complete, stored
- [Green API, $432 yearly](https://datacircle.dev/validate-phone-apis/green-api/432-yearly/llms.txt): $0.96 per 1,000, 11% complete, stored

## Green API's calls (1)

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

## Green API's APIs (1)

- [Green API: phone validation API pricing, 5 plans](https://datacircle.dev/validate-phone-apis/green-api/free/llms.txt)

## Green API: phone validation API alternatives

- [Veriphone, $990 yearly, Business, GET /v3/verify, /v3/verify](https://datacircle.dev/validate-phone-apis/veriphone/990-yearly-business-get-v3-verify-v3-verify/llms.txt): $0.33 per 1,000, 78% complete, stored
- [ReefAPI, $1,200 yearly, Enterprise yearly, POST /phone-validate/v1/validate](https://datacircle.dev/validate-phone-apis/reefapi/1200-yearly-enterprise-yearly-post-phone-validate-v1-validate/llms.txt): $0.333 per 1,000, 67% complete, stored
- [APIFreaks, $100 pack, One-Off 600,000 credits, POST /phone/validation/bulk](https://datacircle.dev/validate-phone-apis/apifreaks/100-pack-one-off-600000-credits-post-phone-validation-bulk/llms.txt): $0.333 per 1,000, 67% complete, stored
- [NumLookupAPI, $179.99 monthly, scale 500k, POST /v1/validate, Batch Validation](https://datacircle.dev/validate-phone-apis/numlookupapi/179-99-monthly-scale-500k-post-v1-validate/llms.txt): $0.36 per 1,000, 67% complete, stored

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