Keysearch vs Semrush

Which one do AI engines recommend, and how do they differ on price, fit and features?

The short answer

Semrush is the stronger AI pick in SEO Tools: it has a visibility score of 64.3 versus 1.1 for Keysearch, and ranks ahead in 100% of the answers that name both.

Choose Keysearch if…

affordable compared to Semrush and Ahrefs
stable, feature-complete platform
popular with freelancers and small agencies

Choose Semrush if…

You want the brand AI engines rank higher (64.3 vs 1.1)
You prefer a larger, established vendor (1,001–5,000 employees)
Widely recommended as a top-tier all-in-one platform for broad suites
Strong keyword research, competitor analysis, and site auditing

AI visibility side by side

Latest weekly run · Nov 2

Metric	Keysearch	Semrush
Visibility score	1.1%	64.3%
Change vs last week	New	New
Rank in SEO Tools	#33	#1
Share of voice	0.4%	12.3%
Mentions this run	2	63
Positive in AI answers	—	49%

The stronger value in each row is marked with a ✓.

Visibility score trend

Weekly runs over the last 60 days

Keysearch 0pp · Semrush 0pp over 0 weekly runs.

Engine by engine

Semrush leads on 3 of 3 engines

ChatGPT

1.7%

77%

AI Mode

1.7%

64.3%

Perplexity

51.7%

KeysearchSemrush

Head to head in AI answers

2 engine answers name both brands

0Keysearch ranked higher

2Semrush ranked higher

Prompt	Engine	Keysearch	Semrush
Most affordable SEO tool that is still reliable	ChatGPT	#5	#1
Most affordable SEO tool that is still reliable	AI Mode	#5	#1

Features, pricing & fit

Dimension	Keysearch	Semrush
Pricing model	—	Flat tiers
Entry price	—	Free; paid from $139 / mo
Free plan	—	Yes
Deployment	Web-based	—
Support	—	Help Center and Basic Onboarding, Enterprise SLA and 24/7 support, Dedicated account manager
Founded	2015	2008
Headquarters	Brooklyn, New York	Boston, MA
Employees	1–10	1,001–5,000
Funding	—	IPO
Best for	Bloggers, content creators, niche site owners and small businesses that want affordable keyword research and content optimization.	Freelancers and small businesses through to agencies and enterprises managing multiple brands, regions and teams.