Surepass is a broad identity-verification platform that sells GST verification as one of many APIs, sold through a sales conversation. gstinapi.in does one thing — GST — and puts the prices on the page. Here is what each side shows publicly.
| Surepass | gstinapi.in | |
|---|---|---|
| Free trial | A free account gives access to test APIs in a sandbox; the trial size is not stated. | Up to 100 free lookups — 25 on signup, 25 for each of three setup steps. Never expire. |
| Price per lookup | No per-lookup price shown; the site offers requesting an API key or contacting sales. | ₹0.40 to ₹0.80, by pack. ₹0.40 on the 6,250-credit pack. |
| How you get pricing | Contact sales. | Published, self-serve. Buy a pack, no sales call. |
| Return-filing data | Not mentioned on the GST verification page. | Yes — GET /v1/gstin/{gstin}/returns lists every GSTR-1 and GSTR-3B filed in a financial year with dates and ARNs; /compliance summarises it; /filing-preference gives the QRMP cadence. |
| Integration | Part of a wider platform: identity verification, video KYC, income and business verification, eSign and more. | One header (x-api-key), official Node.js and Python libraries, OpenAPI spec, a free test GSTIN that never spends a credit. |
Surepass details are what its own page states, read on September 19, 2026; where the page shows nothing we say so rather than guess. Source: surepass.io/gst-verification-api/. Providers change their pricing — check with them before committing volume, and tell us if anything here is out of date.
The fastest honest comparison is your own vendor list through both. Sign up, copy the key and run this. The test GSTIN 00AAAAA0000A1ZT returns a fixed response and never spends a credit.
curl "https://www.gstinapi.in/v1/gstin/22AAAAA0000A1Z5" \ -H "x-api-key: gak_your_api_key"
No credit card. Credits never expire.
Not on its GST verification page as of September 19, 2026: no per-lookup price is shown, and the site points to requesting an API key or contacting sales. gstinapi.in publishes its rates: ₹0.40 to ₹0.80 per lookup depending on the pack, prepaid, with the lowest rate on the 6,250-credit pack. Prices exclude 18% GST.
The GST verification page we read on September 19, 2026 describes real-time GST verification and GSTIN validation but does not list the response fields, so we will not guess. The gstinapi.in response fields are documented in full at /docs and on the GST verification API page.
Yes. Sign up, verify your email and you have 25 lookups; three dashboard setup steps unlock 25 more each, for up to 100 free. No card, no sales call, and the credits never expire. There is also a free test GSTIN that never spends a credit.
When GST is a small part of a bigger verification stack and you want it all from one enterprise vendor. gstinapi.in is deliberately narrower: GST verification, return filing, HSN/SAC lookup, vendor monitoring and e-way bill / e-invoice, on self-serve prices.
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