serpstack vs Zenserp (2026): which should you pick?
As of Oct 23, 2026, serpstack and Zenserp share a 2.0 GPA, both have a free plan, and serpstack starts cheaper, at $26.99 a month against $49.99 a month.
Checked Oct 23, 2026 · graded Oct 23, 2026 by ToolGPA
They get the same grade on all five counts.
Price, platforms and features side by side. The table says where each price was read and when.
serpstack
Google search results API from apilayer, with monthly search quotas
Zenserp
SERP API for Google, Bing, Yandex and DuckDuckGo with monthly plans
Which one is for you
Pick serpstack if
- Fits if you already use other apilayer APIs and want Google results on the same account
- Works for non-commercial projects that fit in 100 free searches a month
Look elsewhere if
- Skip it if you need Bing or any engine other than Google
- Watch out: checkout pre-selects Platinum Support, which the FAQ prices from $479.88 a year
- Watch out: going over the quota bills each extra search, from $0.023992 on Basic, rather than stopping
- Not for you if your free project is commercial, since the free plan rules that out
- Tight if you want yearly billing later, as switching from monthly needs a request to sales
Pick Zenserp if
- Fits if you need Google, Bing and DuckDuckGo results from one key on a fixed monthly quota
- Works for small tests that fit in 50 free Google searches a month
Look elsewhere if
- Tight if you're on Free, with 50 searches a month and Google Search only
- Pricey if you need batches, keyword volume or AI answer engines, which start at $149.99 a month
- Watch out: each AI Overview request uses 3 searches from your allowance
- Skip it if you need over 1 million searches a month without a sales quote
How we grade them
| 2.0GPAserpstackFair | 2.0GPAZenserpFair | |
|---|---|---|
| Value for money | CBasic is $26.99 a month on yearly billing ($29.99 monthly) for 5,000 searches, about $5.40 per 1,000, so the low entry buys fewer searches than most rivals give. Each search past the quota is about $0.024. | CSmall is $49.99 a month for 25,000 searches, $2 per 1,000, at the dear end of this category's usual range. AI answer engines, keyword volume and the batch endpoint wait for Medium at $149.99. |
| Free plan and trial | CA free plan for good, but 100 searches a month, non-commercial use only, JSON only and no support. | CA free plan for good, but 50 searches a month, Google Search only. Other engines, result types and AI Overviews all need a paid plan. |
| Features | CGoogle web, image, video, news and shopping results with ads and related questions, by device and down to the city. It covers Google only: the plans list just the Google Search API. | CGoogle with images, maps, news, shopping and trends, plus Bing, Yandex, DuckDuckGo and AI Overviews on paid plans. The gaps are in the listing: no batch endpoint, AI answer engines or keyword volume below $149.99 a month. |
| Ease of use | CJudged on how fast a developer gets a first result: plain HTTP GET calls returning JSON or CSV, with alerts at 75%, 90% and 100% of the quota. No rating on record. | CJudged on how fast a developer gets a first result: JSON or Markdown back, and usage emails at 90% and 100%. No rating on record, and no client libraries named. |
| Platforms and integrations | CWeb only, with a REST API and no client libraries or integrations named in the listing. No desktop or phone app. | CWeb only, with a REST API and no client libraries or integrations named in the listing. No desktop or phone app. |
| Best for | Google results on a fixed monthly quota | Google plus Bing and DuckDuckGo on a monthly plan |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: serpstack and Zenserp. How we grade
Price against what you get
serpstack starts at $26.99 a month and scores 2.0 out of 4 on features, ease of use and platforms. Zenserp starts at $49.99 a month and scores 2.0.
They score the same, and serpstack starts $23 a month lower. Of the other SERP and SEO data APIs on the chart, 9 score higher than serpstack for less, and 16 score higher than Zenserp for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
At a glance
| serpstack | Zenserp | |
|---|---|---|
| Pricing | Free plan | Free plan |
| Starts at | $26.99 per month for 5,000 searches, billed yearly ($29.99 billed monthly) | $49.99 per month for 25,000 searches, billed monthly |
| Free plan | 100 searches a month for non-commercial use, JSON output only and no support. | 50 searches a month of Google Search only, with email support. Other engines, result types and AI Overviews need a paid plan. |
| Free trial | None listed | None listed |
| Web | ||
| Made by | apilayer | Apilayer Data Products GmbH |
| Price read from | serpstack.com | zenserp.com |
| Checked | Oct 23, 2026 | Oct 23, 2026 |
Worth knowing
serpstack
- The free plan is for non-commercial use only, with JSON output and no support.
- Going over the quota is billed per extra search, from $0.023992 each on Basic, rather than cut off.
- Checkout pre-selects an optional Platinum Support add-on billed yearly, which the FAQ prices from $479.88 a year.
- The plans list only the Google Search API; switching from monthly to yearly billing needs a request to sales.
Zenserp
- The free plan's 50 searches cover Google Search only.
- Each AI Overview request uses 3 searches from the allowance.
- AI answer engines, keyword volume, the batch endpoint and the SLA start at Medium for $149.99 a month.
- Above 1 million searches a month is quoted by sales.
Key features
serpstack
- Google result types
- Web, image, video, news and shopping results, sponsored ads, related questions, maps and answers from a full Google results page.
- Devices and locations
- Results as seen on mobile, tablet or desktop, from any city, region or country.
- JSON or CSV
- Requests are plain HTTP GET calls; paid plans can return CSV as well as JSON.
- Errors not counted
- Each lookup uses one request from the quota, and API errors do not count toward it.
- Usage alerts and overages
- Email and dashboard alerts at 75%, 90% and 100% of the monthly quota; after that, extra searches are billed per call instead of being blocked.
Zenserp
- Google result types
- Web results with ads and snippets, plus image, maps, news, shopping, trends, reverse image and YouTube searches, with geolocated results.
- Other search engines
- Bing, Yandex and DuckDuckGo results on every paid plan.
- AI Overviews and answer engines
- Google AI Overviews with citations on paid plans, at 3 searches each, and answers from ChatGPT, Perplexity, Gemini, Grok and Copilot from Medium up.
- Keyword volume and CPC
- Search volume and cost-per-click data come with the Medium plan and above.
- Batch endpoint
- Send many queries in one batch from the Medium plan; Premium and Enterprise add a custom queue.
- Only successful requests billed
- Invalid or failed requests do not count against the monthly limit, and email alerts go out at 90% and 100% of usage.
Plans
serpstack
Free$0
100 searches a month, non-commercial use only, JSON only, no support.
Basic$26.99
per month for 5,000 searches, billed yearly ($29.99 billed monthly)
Commercial use, JSON and CSV, no rate limit and standard support. Extra searches cost $0.023992 each.
Business$87.99
per month for 20,000 searches, billed yearly ($99.99 billed monthly)
The same features as Basic with a larger quota. Extra searches cost $0.019998 each.
Business Pro$169.99
per month for 50,000 searches, billed yearly ($199.99 billed monthly)
The same features with 50,000 searches. Extra searches cost $0.0159992 each.
EnterpriseCustom
Volume searches, a custom SLA and custom solutions, quoted on request.
Zenserp
Free$0
50 Google searches a month.
Small$49.99
per month for 25,000 searches, billed monthly
$2.00 per 1,000. Bing, Yandex, DuckDuckGo, images, news, maps, shopping, trends, video, hotels, flights, jobs, Markdown and AI Overviews.
Medium$149.99
per month for 100,000 searches, billed monthly
$1.50 per 1,000. Adds the batch endpoint, keyword volume and CPC, AI answer engines, personal support, onboarding and an SLA.
Large$299.99
per month for 250,000 searches, billed monthly
$1.20 per 1,000, with everything in Medium.
Premium$499.99
per month for 500,000 searches, billed monthly
$1.00 per 1,000, plus a custom queue.
Enterprise$899
per month for 1,000,000 searches, billed monthly
$0.90 per 1,000, plus priority support. Above 1 million searches a month is a custom quote.
Ways to pay less
serpstack
- Annual discount
Up to 15% off with yearly billing
serpstack's FAQ says annual billing costs up to 15% less; Business Pro is $169.99 a month billed yearly against $199.99 billed monthly.
Zenserp
- Annual discount
20% off with yearly billing
Zenserp's pricing page offers a 20% discount on a yearly subscription compared with paying monthly.
Common questions
Which is cheaper, serpstack or Zenserp?
As of Oct 23, 2026, serpstack is cheaper to start with: $26.99 a month, against $49.99 a month for Zenserp. serpstack starts at $26.99 per month for 5,000 searches, billed yearly ($29.99 billed monthly), and Zenserp starts at $49.99 per month for 25,000 searches, billed monthly.
Which has a free plan, serpstack or Zenserp?
As of Oct 23, 2026, both serpstack and Zenserp have a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.