AdWords Keyword Tool (free) vs. getKeywordVariations API call

[MichaelUMD]

Dear All,

I need to produce a set of popular queries commonly associated with a
certain set of key phrases. I am looking into aprox. 5K keyphrases (1
to 5 word long each), which serve as seeded keywords.

Is there any difference between two services (1) AdWords Keyword Tool
(free) and (2) getKeywordVariations API call (paid) in terms of
outcome?

Thank you,

Michael

[AdWords API Advisor]

Hello Michael,

You should get similar results using either of the two methods. In
general, the API is meant to facilitate automated interaction with the
AdWords system, and you might find it more useful to use the API for
estimating 5000 seed keywords than manually doing it via the web tool.
It's up to you.

Cheers,
-Jeff Posnick, AdWords API Team