Comparing keyword research APIs: Spyfu vs SEMRush vs Serpstat and more

Comparing keyword research APIs: Spyfu vs SEMRush vs Serpstat and more

March 2, 2017 4:00 pm

Many instruments present entry to their APIs, aiming to facilitate routine work for specialists.

APIs could make SEOs’ lives a lot simpler by serving to to:

  • Data mine and extract key phrases quicker
  • Collect the required knowledge on to an exterior service or program (i.e. Google Spreadsheets, Cyfe, and so on.)
  • Perform superior search time period analysis by way of XML or Excel
  • Integrate all types of knowledge from totally different sources (i.e. rankings and backlinks)
  • Create complicated reviews combining all types of knowledge
  • Automate reporting
  • Build and market your personal instruments
  • Create inner instruments to optimize your staff workflow, and so on.

While all of us have our favourite web optimization instruments we use each day, APIs give us the pliability no device can present by letting us seize the info we’d like and type / filter it the best way our search engine optimization duties require.

I’m always working with key phrase analysis instruments and I have had the chance to provide many APIs a attempt. So I determined to hold out a small research evaluating the key phrase analysis APIs I have seemed into, and share my analysis in a weblog publish.

I took one of the best-recognized web optimization instruments which give APIs for working with key phrases and analyzed how a lot it can value to make a name for M,000,000 models.

All-in-one web optimization dashboards


SpyFu is a platform for web optimization and PPC specialists specializing in competitor evaluation and key phrase monitoring. Spyfu is among the oldest key phrase analysis instruments I am conscious of — which suggests its database is definitely large, storing years of knowledge.

SpyFu presents three subscription ranges: Basic – $forty nine, Professional – $ninety nine, Team – $299. An API is included into subscriptions ranging from Professional degree.

All of the subscriptions with an API include 10,000 API rows/models returned a month. Every further B,000 models are charged at $P.00. Hence M,000,000 models can be $1980 further in fees.

So the ultimate worth for B,000,000 is $2079.

Maybe you’ll be glad to listen to that SpyFu doesn’t put any limits on the variety of requests.

Spyfu API documentation is right here.

To summarize, to get B,000,000 outcomes by way of API you’ll have to purchase a plan value $ninety nine and pay $1980 extra for 990.000 API models.


SEMrush gives evaluation of natural visitors and paid advertisements, backlinks, and key phrases. SEMrush was the primary key phrase analysis software I ever used. I love their knowledge output.

The device consists of three subscription ranges beginning at $ninety nine.ninety five, however an API is simply included into Business tariff value $399.ninety five.

Screencap of the three subscription options offered by SEMRush: Pro, at $99.95 per month, Guru, at $199.95 per month, and Business at $399.95 per month.

But that’s not all. API models aren’t included into the plan, so you must buy them moreover. 20,000 API models value $M, so to course of B,000,000, it’s worthwhile to pay $50.

So with SEMrush you need to pay $449.ninety five for M,000,000 of API requests. There are not any day by day limits.

SEMrush API documentation is situated right here. To summarize, to get B,000,000 outcomes by way of API you’ll have to purchase a subscription ($399) and pay $50 to make use of sufficient API models.


Serpstat is an all-in-one platform for search engine optimisation and PPC specialists offering key phrase analysis and monitoring instruments in addition to on-website evaluation and backlink monitoring.

It consists of eight paid plans of various limitations from $19 to $2500.

An API is enabled ranging from Plan S which prices $sixty nine. As I didn’t precisely perceive the API circumstances, I despatched a letter to Serpstat help as nicely.

Turns out Serpstat supplies entry to API individually from their subscription plans. So you should use the API with out truly upgrading to PRO:

So with Serpstat you will get B,000,000 models for $one hundred fifty.

Serpstat API documentation is situated right here. Short abstract: B,000,000 models value $one hundred fifty with none further funds.

Pure key phrase analysis instruments


Wordtracker is a strong key phrase analysis answer with an enormous database. They declare to function the database of A.H billion search phrases (350 million distinctive key phrases) lately.

Their API is available in their Gold subscription degree, however to have extra flexibility with the API you’ll more likely to need to buy one of many API-solely packages. Besides, Wordtracker API entry is topic to approval from their staff, so it feels like they could not settle for some purposes.

If their API packages appear complicated to you, you aren’t alone. I needed to contact them to verify what I want to purchase to get M,000,000 models. From their reply it sounds just like the “Enterprise” plan shall be sufficient.

Each name is priced for one hundred seeds, so for M, 000,000 phrases you’d want 10,000 calls. A easy quantity search is priced at 10 models per name so that you’d be utilizing one hundred,000 models.

Wordtracker API documentation is right here. is a key phrase choice device that makes use of autosuggest outcomes from Google, YouTube, Bing, Amazon, and Apple App Store. features a free restricted model and three forms of paid subscription ranges. The API is out there individually from the paid subscriptions and it’s priced as follows:

As you’ll be able to see within the picture above, API consists of three subscription plans of various limitations and costs, ranging from $280/month.

Looks like their API Lite plan handles the quantity of key phrases we’d like. So, for $280 you’ll be able to deal with B,000,000. Note you could make solely one hundred requests per day, so it is going to take thirteen days to conduct the complete quantity of labor. If you want it faster, you’ll should buy a costlier plan. API documentation is out there right here.

Short abstract: M,000,000 API models can be found within the API Lite Plan which is value $280.

More APIs

I haven’t included a number of APIs in my analysis, so right here they’re:

  • Raven Tools: I was informed API wasn’t their precedence presently. They concentrate on their Audit device as an alternative.
  • Keyword Discovery: They appear to have a very good API however I couldn’t work out the best way to get one hundred,000 models there. They cost $495 per thirty days per 10,000 queries and it appears unattainable to purchase extra models.
  • Wordstream: They have retired their API altogether.

The Bottom Line

Advanced professionals who’ve a variety of tasks, and little time, all the time select an API for his or her skilled wants. I hope this little analysis of mine will assist you to decide an appropriate key phrase analysis API:

# Of Units Daily Calls Price
Spyfu M,000,000 models No limits $P,079
SEMrush No limits $449.ninety five
Serpstat No limits $one hundred fifty
WordTracker No limits $M,000 one hundred requests $280

I can’t touch upon the standard of the databases, to be trustworthy. I have been utilizing every of the above instruments and I discover it nice that all of them current the knowledge in another way. That lets me discover what I did not with different instruments. That being stated, the extra key phrase analysis provided, the higher.

Screenshots by Ann Smarty. Taken February 2017. Featured Image: johnhain / pixabay

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