Lumen AIComparison
Semrush's AI Visibility Toolkit is a solid way to add AI-answer tracking to the SEO suite you already run. But it charges per domain, measures with a US-English bias, and stops at the diagnosis. Lumen does the same GEO job, built for a LATAM agency running several clients.
We're not saying Semrush is bad. If your team lives inside Semrush and wants backlinks, keywords and AI visibility under one login, the add-on makes sense. What we're saying is narrower: you don't need the whole suite to measure your presence in ChatGPT and Gemini. Lumen covers mentions, ranking, sentiment, share of voice and cited domains — the same as Semrush's toolkit — and also generates the content to close the gap and pushes it to the indexers. Pricing starts at $50/mo with unlimited client profiles in one prompt pool, instead of $99/mo for every domain. And you pay with MercadoPago, in local currency.
Comparison
| — | Lumen AI | Semrush AI Visibility Toolkit |
|---|---|---|
| Entry price | $50/mo (Agencia Starter plan) | $99/mo per domain, billed annually |
| Cost for ~5 clients | $50–100/mo — one prompt pool split across all of them | ~$495/mo+ (one domain = one charge), before seats or extra prompts |
| Client profiles | Unlimited on every plan | One per $99/mo charge |
| Tracked prompts | 20 (Starter) · 50 (Agencia) · up to 150 | 25 on the base plan; expansion costs extra |
| AI engines | ChatGPT and Gemini (base); +Perplexity, Claude, AI Overviews or Copilot on higher plans | ChatGPT, Google AI Overviews and AI Mode, Gemini, Perplexity (no Claude or Copilot, as of this writing) |
| Spanish and Portuguese prompts | Native, with each country's real phrasing | Supported languages, but the toolkit has a marked US-English bias |
| LATAM per-country targeting | Argentina, Mexico, Colombia, Chile, Peru, Uruguay and more | Limited regional databases; for Spanish, only Spain |
| Sentiment and competitor analysis | Yes | Yes |
| Generates content to improve (articles, FAQs, llms.txt) | Yes | No — diagnosis only |
| Executes technical fixes (IndexNow, Bing) | Yes, autonomously | No |
| White-label client reports | Yes ($40 pack, included in higher plans) | Not within the toolkit |
| Payment | MercadoPago and international card | USD card; best price requires annual |
| Free plan | Yes, no card | No (7-day trial) |
Lumen AI
Semrush charges $99/mo for every domain you want to monitor. Three clients and you're at $300/mo. Lumen gives you a prompt pool you split across as many clients and locations as you want, with no profile limit, from $50/mo.
Our prompts are written and run in each LATAM country's language and slang. Semrush's AI Visibility Toolkit supports multiple languages, but independent reviews describe a strong US-English bias, and its only Spanish regional database is Spain's.
Semrush shows you where you're missing. Lumen also drafts the articles, FAQs and llms.txt edits, and pushes them to IndexNow and Bing so LLMs pick them up in hours. Diagnosis to execution, without leaving the platform.
The toolkit lives inside the Semrush ecosystem and its best price needs an annual commitment. Lumen is standalone and month-to-month: you pay only for AI monitoring, in local currency, and cancel whenever.
Semrush is an established brand — telling a client "we monitor this with Semrush" carries weight — and its prompt-research dataset (126M+ prompts) is larger than ours. If that matters most to you, Semrush is a valid choice. If per-client price, language and executing the fixes matter more, Lumen is the better fit.
Free plan, no card. Set up in 2 minutes and see what ChatGPT and Gemini say about you today.