Comparison
3RD vs Semrush: you just ask, and 3RD Agent does the work.
Semrush's AI Visibility Toolkit tracks prompts on platforms like ChatGPT and Google AI Mode next to your SEO data, and suits SEO teams that already live in Semrush. With 3RD, any marketer can do the work: open 3RD Agent, ask what to focus on to reach your goal, and it tells you what needs doing. Ask it to do it, and it does. Then repeat.
Built by former Googlers and veterans of brands and agencies.
Quick answer · updated October 18, 2026
3RD or Semrush: the short answer
3RD (get3rd.com) is an AI visibility platform for marketing teams; Semrush is an SEO suite with an AI Visibility Toolkit. Choose Semrush if your SEO team runs AI visibility next to keyword data. Choose 3RD if your marketing team owns it: ask 3RD Agent what to focus on, and it does the work.
How it works with 3RD
Open 3RD Agent, ask, and it does the work. It doesn't get easier.
Open 3RD Agent
It knows your brand, your competitors, your markets, and the prompts in your goal.
Ask what to focus on
It tells you what needs doing to reach your goal, and why AI chooses your competitors today.
Ask it to do it
It does the work in your brand voice, from content to briefs and outreach. You check it and publish.
Repeat
3RD checks your plan daily against the latest AI answers, so the next question always starts from what moved.
3RD vs Semrush
Which one fits you?
Choose Semrush if…
Your SEO team leads and already works in Semrush. You want AI visibility next to keyword, backlink and site audit data. You mainly need ChatGPT and Google AI Mode tracked.
Choose 3RD if…
Your marketing team leads without an AI visibility specialist. You want to know why AI chooses your competitors, and a plan toward a goal. You sell in several markets and languages and need each one tracked separately, with the work drafted in your brand voice.
Side by side
3RD and Semrush, side by side
| 3RD | Semrush | |
|---|---|---|
| Built for | Marketing teams (brand, content, PR, and comms) at SMB, mid-market, and enterprise brands, B2B and B2C. Technical tasks go to the SEO or web team | SEO teams, agencies, and marketers; Semrush says it is built "with SMBs, agencies, and mid-market companies in mind" |
| Core focus | AI visibility: getting chosen in AI answers | An SEO suite, with AI visibility as a toolkit |
| The why | Diagnostics score five drivers per market (content coverage, content quality, crawlability, authority, and outreach) and explain them in plain language | AI Visibility Score, brand performance (share of voice, sentiment, and narratives), and an AI search site audit |
| What to do | A Playbook toward a goal you set, with tasks ranked by impact and labeled content, technical, outreach, or ads, checked daily against the latest AI answers | Site audit issues for AI search, inside the wider SEO toolkit |
| Doing the work | Chat with 3RD Agent: ask what to focus on, then ask it to do the work. It drafts in your brand voice, and you check it and publish | Your team acts on the data in Semrush |
| AI models | Up to 2, 3 or 4 by plan, up to 13 on Enterprise | Daily prompt tracking on platforms like ChatGPT and Google AI Mode |
| Prompts | 40 / 100 / 300 by plan, custom on Enterprise | 25 tracked prompts in the AI Visibility Toolkit; 50 or 100 daily prompts in Semrush One Starter and Pro+ |
| Users | 2 on Starter, unlimited from Pro | Each extra user costs $99 a month on the AI Visibility Toolkit |
| Price / month | €99 / €299 / €499 a month (€84 / €254 / €424 billed annually), and Enterprise. 7-day free trial | AI Visibility Toolkit $99 a month. Semrush One bundles from $139 a month, with a 7-day free trial |
Semrush details from semrush.com (AI Visibility Toolkit knowledge base, features, and pricing pages), checked October 18, 2026. We update this page when either product changes.
Questions buyers ask
3RD or Semrush: what buyers ask
We already pay for Semrush. Do we need another tool?
If your SEO team owns AI visibility and wants the numbers next to keyword data, Semrush's toolkit may be enough. If your marketing team owns it, the question is who turns the numbers into work. 3RD has the specialist's know-how built in. 3RD Agent handles the diagnosis, the plan, and the drafts, so your team doesn't need to become AI search specialists.
Which explains why AI picks a competitor?
Semrush shows your AI Visibility Score, share of voice, sentiment, and the narratives AI uses about your brand. 3RD scores the five drivers AI uses to choose a brand in each market (content coverage, content quality, crawlability, authority, and outreach), explains in plain language which ones hold you back, and turns them into a ranked Playbook.
Which is better for several markets and languages?
3RD tracks each market as a country and a language, so Denmark–Danish and Denmark–English never blur together. From the Pro plan, you can track any market you sell in, within your plan's prompts, and Content Agent drafts in each language, proofread to native quality.
What does each cost?
The Semrush AI Visibility Toolkit costs $99 a month for 25 tracked prompts, and Semrush One bundles start at $139 a month. 3RD plans start at €99 a month (€84 billed annually) with 40 prompts, and every plan includes the diagnosis and ranked tasks.
Proof
One marketer, zero to the top five in a quarter
Boë Beauté started at 0.0% AI visibility. One in-house marketer with no GEO or SEO specialist background followed the plan, and within a quarter the brand reached 22.2% visibility and the top five of seven competitors. Read the case →
“3RD didn't just show us where we were visible, but why we weren't being selected in specific AI scenarios.”
FAQ
Getting started next to Semrush
Can we bring our prompts over?
Yes. Export them from Semrush, map them to our CSV template (prompt, country, language, topic, category, and tags), and import up to 10,000 prompts per file. Audiences aren't included in the import, so set those up afterward.
Does our SEO team still have a role?
Yes. Technical tasks in the Playbook, such as crawlability fixes, go to your SEO or web team, while your marketing team owns the story and the content.
Can we run both side by side before deciding?
Yes. The 7-day trial gives full access, so you can compare the diagnosis and the plan on your own brand.
Is 3RD ready for enterprise?
Enterprise brands run 3RD today. Enterprise plans include custom markets, up to 13 AI models, unlimited users, a 99.9% uptime SLA, and a dedicated CSM. Your data is stored in the EU, encrypted, and never used to train public AI models, and a GDPR DPA is included. Your team signs in with Google or Microsoft, with MFA; there is no SAML single sign-on yet.
Sources
Sources and last update
Semrush: semrush.com/kb/1493-ai-visibility-toolkit, semrush.com/features/ai-visibility, and semrush.com/pricing, checked October 18, 2026. 3RD: docs.get3rd.com and get3rd.com/pricing. See all comparisons →
Your turn
See the difference on your own brand.
Seven days of full access: your competitors, your markets, and why AI chooses them over you.