# 8 Sigma SMS alternatives in 2026

Last updated: November 7, 2026.

Other providers sell phone validation APIs like Sigma SMS's. TPSClear costs $0.353 per 1,000 phones, 互亿无线 Ihuyi $0.359 and NumLookupAPI $0.36.

## Phone validation API alternatives

On our Sigma SMS plan pages, we compare each Sigma SMS plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 phones first.

- [TPSClear, £795 monthly, Scale, POST /v1/screen](https://datacircle.dev/validate-phone-apis/tpsclear/1-pack#795-monthly-scale-post-v1-screen): $0.353 per 1,000 phones
- [互亿无线 Ihuyi, CNY 4,800 pack](https://datacircle.dev/validate-phone-apis/ihuyi/cny-500-pack#cny-4800-pack): $0.359 per 1,000 phones
- [NumLookupAPI, $179.99 monthly, scale 500k, POST /v1/validate, Batch Validation](https://datacircle.dev/validate-phone-apis/numlookupapi/free-post-v1-validate#179-99-monthly-scale-500k-post-v1-validate): $0.36 per 1,000 phones
- [ZelNum, $2,000 pack, Pay as you go, $2,000 top-up, POST /detect, Zalo Number Checker](https://datacircle.dev/validate-phone-apis/zelnum/free-test-post-detect-phone-status-check#2000-pack-pay-as-you-go-2000-top-up-post-detect-zalo-number-checker): $0.36 per 1,000 phones
- [GREENSMS, top-up, HLR lookup: other countries](https://datacircle.dev/validate-phone-apis/greensms/top-up-hlr#top-up-hlr-2): $17.91 per 1,000 phones
- [MTS Exolve, top-up, Basic: from 750,001 to 1,000,000 requests a month](https://datacircle.dev/validate-phone-apis/mts-exolve/free-300-post-hlr-v1-getsimstatus#top-up-750-001-1-000-000): $17.91 per 1,000 phones
- [SMSC.ru, top-up from ₽10,000, Tariff plan 5, Russia, all operators](https://datacircle.dev/validate-phone-apis/smsc-ru/top-up-from-1-tariff-plan-1-other-countries#top-up-from-10000-tariff-plan-5-russia-all-operators): $17.91 per 1,000 phones
- [Listar, top-up from €10,000, Gold, POST /search/verify-whatsapp](https://datacircle.dev/validate-phone-apis/listar/free-start-for-free-post-search-verify-whatsapp#top-up-from-10000-gold-post-search-verify-whatsapp): $18.00 per 1,000 phones

Compare every phone validation API plan: [Phone validation API pricing: free and cheapest plans compared](https://datacircle.dev/phone-validation-api-pricing)