seodata.dev

keyword

best books of the 21st century

Monthly search volume and cost-per-click data for "best books of the 21st century" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=best+books+of+the+21st+century&country=us" +--------------+------------------+ | volume | 6,600 | | cpc | $0.4 | | competition | 0.09 | | country | US | | updated | 2026-06-12 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
best books 21th century 6,600 $0.4 20/20
best books 21st century 6,600 $0.42 15/20
best books of the 21th century 6,600 $0.42 15/20
best books of 21st century 5,400 $0.25 20/20
top 100 books of the 21st century 4,400 $0.45 16/20
100 best books of the 21st century 4,400 $0.45 15/20
best novels of the 21st century 2,400 $0.36 20/20
greatest novels of the 21st century 2,400 $0.41 20/20
nyt best books of 21st century 2,400 $0.39 19/20
best novelists of the 21st century 2,400 $0.41 15/20

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://app.seodata.dev/v1/keyword?q=best+books+of+the+21st+century&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