seodata.dev

keyword

big four marketing firms

Monthly search volume and cost-per-click data for "big four marketing firms" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=big+four+marketing+firms&country=us" +--------------+------------------+ | volume | 30 | | cpc | $4.15 | | competition | 0.07 | | country | US | | updated | 2026-06-20 | +--------------+------------------+
All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
companies that advertise 3,600 $21.61 5/20
biggest advertising companies 1,600 $6.5 9/20
largest advertising agencies 1,600 $6.76 7/20
biggest advertising agencies 1,600 $13.28 6/20
large advertising agency 1,600 $4.39 6/20
big advertising agency 110 $5.93 9/20
public advertising agencies 50 $6.48 7/20
big 4 advertising holding companies 20 $0 9/20
big 6 marketing agencies 20 $0 6/20
who are the big 4 advertising agencies 10 $0 9/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=big+four+marketing+firms&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt