A flexible Serpstat API alternative — plans or pay-as-you-go
Serpstat is a strong all-in-one SEO suite, but its API is locked behind a monthly subscription (from around $100/mo) and a credits system rather than transparent per-request pricing. If you only need data over an API, Kwinside lets you pick a plan or pay per request. (Disclosure: Kwinside is our product; Serpstat is a trademark of its owner.)
Start free — 20 requests/day, no card
Kwinside vs Serpstat — at a glance
| Feature | Kwinside | Serpstat |
|---|---|---|
| Pricing model | Pay-as-you-go, $0.002 / request | Subscription + credits |
| API entry cost | $20 top-up | From ~$100 / mo (Team tier) |
| Free API tier | 20 requests / day | No free API (10 free UI checks/day) |
| Per-request transparency | Yes — flat $0.002 | Credits (cost varies by call) |
| Keyword / SERP / competitors API | Yes | Yes |
| Full SaaS tool suite (UI) | API-first only | 50+ tools (broader) |
| Code examples in API docs | Yes (cURL/Python/PHP/JS) | Marketing copy, few examples |
Comparison as of June 2026 — pricing and features change often, so please verify on each provider’s website. See the Serpstat pricing page. Kwinside is our own product; Serpstat is a trademark of its respective owner.
When Kwinside is the better Serpstat API alternative
Use Kwinside when the API is what you actually buy: flexible plans or pay-as-you-go, flat $0.002 per request, a $20 entry and 20 free requests a day — without paying for a 50-tool suite you will not use.
Choose Serpstat if you want the full web UI and tool suite (rank tracker, site audit, backlinks) and the API is secondary. Kwinside is API-first.
Frequently asked questions
Can I use the Serpstat API without a subscription?
With Kwinside, yes — you can go pay-as-you-go with no monthly plan, or pick a plan if you prefer. Serpstat gates its API behind a paid subscription with credits (as of June 2026).
Is there a free tier?
Kwinside includes 20 free API requests per day. Serpstat offers limited free checks in its web UI but no free API tier.
Does Kwinside replace the whole Serpstat suite?
No — Serpstat is a broad 50+ tool platform. Kwinside is a focused, API-first source of keyword, SERP and competitor data.
Pay-as-you-go pricing · Free SERP & keyword API · API docs