serp.ac vs Semrush AI Toolkit
Semrush's AI Visibility Toolkit adds AI-search tracking to the Semrush suite. Here's how it compares with serp.ac on engines, rank tracking, price and the jobs only one of them does.
The short answer
Semrush is the bigger SEO suite. If your team already lives in its keyword database, backlink index and competitive research, the AI Visibility Toolkit is a natural add-on, and its prompt tracking refreshes daily.
serp.ac is the lighter, cheaper all-in-one: AI visibility on ChatGPT, Perplexity, Google AI Mode, Gemini and Claude, daily Google rank tracking, purchased-link management and a Google indexer in one subscription from $39/month. The toolkit tracks prompts on ChatGPT and Google AI Mode only, and rank tracking needs Semrush One.
Features: serp.ac vs Semrush
“Not listed” means their pricing or product page doesn't mention it — it may still exist.
| Feature | serp.ac | Semrush |
|---|---|---|
| AI visibility | ||
| AI engines for prompt tracking | ChatGPT, Perplexity, Google AI Mode, Gemini and Claude — any 3–5 by plan | ChatGPT and Google AI Mode (Semrush One also lists Perplexity and Gemini) |
| How often AI answers are re-checked | Weekly (every 2 weeks on Starter) | Daily |
| Citations / sources in AI answers | Not listed | |
| Share of voice vs. competitors | ||
| “Why am I not visible?” diagnosis | AI Search checks in Site Audit (up to 100 pages) | |
| Google AI Overview citations | With every daily rank check | Not listed |
| Google rankings & SEO | ||
| Daily Google rank tracking | 100–1,000 keywords, top 100, any location | Not in the toolkit — Semrush One from $199/mo |
| Keyword research database | Volume & difficulty lookups only | Yes, in Semrush SEO plans |
| Site audit | AI-search checks only in the toolkit | |
| Links & indexing | ||
| Purchased-link management (price, payments, renewals, vendors) | ||
| Deindex alerts for purchased links | ||
| Built-in Google indexer | 100–2,000 URLs / month | |
| Team & access | ||
| API | Not listed | |
| Team seats | 1–25 by plan | One $99 license per user |
| Free trial | 7 days (card required) | No (Semrush One: 7 days) |
Price at comparable usage
Each row is the usage of one serp.ac plan, priced on Semrush with the cheapest plan and add-ons that cover it. Red lines are what that Semrush plan can't do for this usage.
- Claude not listed
- Claude not listed
Prices as listed on — check their site for current pricing: Semrush KB: AI Visibility Toolkit, Semrush prices.
- Semrush: the AI Visibility Toolkit tracks prompts on ChatGPT and Google AI Mode only and has no Google rank tracking, so usage with keywords is priced on Semrush One.
- Semrush: we assume the +50 prompts add-on ($60) can also be added to Semrush One. The toolkit is licensed per user; prices are for one user and one domain.
- serp.ac engines are picked in this order when a plan has fewer than 5: ChatGPT, Perplexity, Google AI Mode, Gemini, Claude. You can choose any of them in the app.
When to choose Semrush
- You already use Semrush for keyword research, backlinks and competitor data. Its keyword database is far larger than anything serp.ac offers — serp.ac only looks up volume and difficulty for keywords you track.
- You need AI answers refreshed every day. Semrush updates prompt tracking daily; serp.ac re-checks prompts weekly (every 2 weeks on starter).
- You want sentiment and narrative analysis of how AI describes your brand (Semrush's Brand Performance reports).
- Your company already has a Semrush contract and prefers one vendor for everything.
Why teams switch to serp.ac
- 5 AI engines — ChatGPT, Perplexity, Google AI Mode, Gemini and Claude — instead of ChatGPT and Google AI Mode only.
- Daily Google rank tracking (top 100, any city or country) is included from $39/month; in Semrush it means moving to Semrush One from $199/month.
- Team seats are included (1–25 by plan) — the Semrush toolkit needs a $99 license per user.
- A 7-day free trial; the AI Visibility Toolkit has none.
- Purchased-link management: log the price, payment date and vendor of every link you buy, get renewal reminders, and alerts when a link is lost, turns nofollow or its page is deindexed.
- A built-in Google indexer (100–2,000 URLs a month by plan) and bulk index checks, next to the links and pages you track.
- Alerts where your team already is: Telegram, Slack, Discord and email — plus a public API and a Chrome extension.
serp.ac vs Semrush: FAQ
Which AI engines does the Semrush AI Visibility Toolkit track?
According to Semrush's knowledge base, prompt tracking in the toolkit covers ChatGPT and Google AI Mode. serp.ac tracks ChatGPT, Perplexity, Google AI Mode, Gemini and Claude.
How much does the Semrush AI Visibility Toolkit cost?
Semrush lists it at $99 per month for 25 tracked prompts, with +50 prompts for $60 per month and extra domains at $99 each. Semrush One, which adds rank tracking, starts at $199 per month. Check Semrush's site for current prices.
Is serp.ac a full Semrush replacement?
No. serp.ac doesn't have Semrush's keyword research database, backlink index or competitive research. It replaces the tracking side — daily rankings, AI visibility, purchased links and indexing — at a lower price.
Does serp.ac check AI answers daily like Semrush?
Not today. serp.ac re-checks AI prompts weekly (every 2 weeks on starter); Google rankings are checked daily on every plan.
More comparisons
Rank tracking, AI visibility on 5 engines, purchased-link management and indexing in one dashboard.
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