keyword

big five firms

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

$ curl "https://api.seodata.dev/v1/keyword?q=big+five+firms&country=us" +--------------+------------------+ | volume | 90 | | cpc | $0 | | competition | 0.01 | | country | US | | updated | 2026-06-17 | +--------------+------------------+

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
accounting firm big 5	1,300	$4.23	13/20
big 5 accounting firms	1,300	$9.65	10/20
accounting big 5	1,300	$4.23	9/20
big 5 firms accounting	1,300	$13.39	8/20
big five accounting firms	260	$3.49	9/20
big 5 companies	260	$0.02	8/20
big five audit firms	260	$0	8/20
the big five accounting firms	110	$38.01	10/20
the big 5 accounting firms	110	$0	8/20
big 5 firms	90	$0	10/20

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+five+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