Semrush vs Writesonic

SEO tool for finding keywords, checking your site and tracking how you show up in search and AI answers. AI writing and SEO tool focused on getting found in search and AI answers.

	Semrush	Writesonic
Price	SEO: $117.33 a month billed annually ($139 monthly). SEO + AI Search: $165.17 billed annually ($199 monthly).	Starter: $79 a month, billed annually. Basic: $199. Growth: $399.
Free plan	No. Free trial; no ongoing free plan listed on the pricing page.	No. Free trial; no ongoing free plan listed.
Best for	Businesses doing their own SEO seriously, or agencies.	Businesses producing a lot of web content.
Watch out for	Expensive for a sole trader who only needs basics.	Expensive for occasional writing; a general AI assistant may be enough.
UK notes	Includes UK search data. Priced in US dollars.	Priced in US dollars.
Made by	Semrush	Writesonic
Checked	2026-10-14	2026-10-14

Our verdict

For most small UK businesses starting out, Writesonic is the easier first pick because its entry plan costs less. Pick Semrush instead if this sounds like you: businesses doing their own SEO seriously, or agencies.

UK price difference

Cheapest paid plans: Semrush $139 (SEO, per month ($117.33 billed annually)); Writesonic $79 (Starter, per month, billed annually). Writesonic is $60 a month cheaper at entry level, though billing terms differ. Check on the provider page whether VAT is included before you buy.

Who should pick which?

Choose Semrush for: businesses doing their own SEO seriously, or agencies.
Choose Writesonic for: businesses producing a lot of web content.

Neither has a free plan; use the free trials where offered before you commit. Prices change, so check the provider's page before buying.

Full details

Semrush tool page · Writesonic tool page · How we check prices

Sources

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