An honest comparison of the leading AI visibility and GEO tools — per4mx, OtterlyAI, Semrush, Ahrefs, and more — with a focus on what actually works for Swiss and DACH B2B companies.
Generative Engine Optimization is no longer a niche concept. As more B2B buyers turn to AI assistants for supplier research, an ecosystem of tools has emerged to help companies monitor and improve their visibility across ChatGPT, Claude, Perplexity, and Google AI.
But the market is fragmented. Some tools are purpose-built for AI visibility. Others are traditional SEO platforms that have bolted on AI features. And a few are social listening tools that overlap tangentially with GEO. Choosing the right tool — or combination of tools — matters enormously, especially for Swiss and DACH B2B companies operating in a multilingual market.
Here is an honest comparison of the leading options in 2026, based on hands-on testing and real-world results. We cover dedicated AI visibility platforms, traditional SEO suites, social listening tools, and the emerging category of AI-specific content tools — with a clear framework for choosing the right combination for your situation.
Focus: End-to-end AI visibility for B2B — monitoring, gap analysis, content generation, competitor intelligence, and llms.txt generation.
per4mx was built specifically for the problem of Generative Engine Optimization. It queries ChatGPT, Claude, Google AI Mode, Google AI Overview, Copilot, Perplexity, and Brave with realistic buyer prompts, analyses where your company appears (or does not), identifies content gaps, and generates optimised content to close those gaps.
What it does well:
Pricing: Tiered plans from CHF 79/month for monitoring to enterprise pricing for full content generation and llms.txt capabilities.
Limitations: per4mx is focused on AI visibility, not traditional SEO. If you need backlink analysis or keyword tracking for Google, you will still need a complementary tool. The platform is relatively new compared to established SEO suites, though this also means it was designed for the current AI landscape rather than retrofitted.
Focus: GEO monitoring, citation tracking, and content audit for AI search.
OtterlyAI is one of the earliest dedicated AI visibility platforms. It focuses primarily on tracking how your brand appears in AI-generated responses and identifying opportunities to improve your citation rate. For a deeper comparison, see our detailed per4mx vs OtterlyAI analysis.
What it does well:
Pricing: Plans starting around $149/month, with enterprise tiers for larger organisations.
Limitations: OtterlyAI is primarily an analytics and monitoring tool — it tells you where you stand but does not generate content or publish for you. DACH multilingual support is more limited than purpose-built Swiss tools. The platform is stronger on tracking than on actionable remediation.
Focus: Comprehensive SEO suite with emerging AI visibility features.
Semrush is the dominant SEO platform, used by thousands of B2B companies globally. It excels at keyword tracking, backlink analysis, site auditing, and competitive SEO intelligence. In 2025-2026, Semrush has added AI-related features, though they complement rather than replace dedicated GEO tools.
What it does well:
Pricing: From $139.95/month (Pro) to $499.95/month (Business), with add-ons for local SEO and additional users.
Limitations: Semrush does not query ChatGPT, Claude, or Perplexity. Its AI features are limited to Google's ecosystem. For Swiss B2B companies, the multilingual capabilities exist but are primarily keyword-focused, not conversation-focused. Semrush tells you how you rank in Google — it does not tell you how AI models describe your company when buyers ask for recommendations.
Focus: SEO toolset with strong backlink and content analysis capabilities.
Ahrefs is Semrush's primary competitor in the SEO space. It is particularly strong in backlink analysis and content gap identification for traditional search.
What it does well:
Pricing: From $129/month (Lite) to $1,499/month (Enterprise).
Limitations: Like Semrush, Ahrefs is a traditional SEO tool. It has no AI visibility monitoring, no ChatGPT or Claude tracking, and no GEO-specific features. It is an excellent complement to an AI visibility tool but not a substitute. DACH-specific features are limited to keyword databases — there is no multilingual AI query simulation.
Focus: Social listening and online mention monitoring.
Brand24 and Mention are social listening tools that track where your brand is mentioned across social media, news, blogs, and forums. Some companies use them as a proxy for AI visibility monitoring, though they were not designed for this purpose.
What they do well:
Pricing: Brand24 from $119/month; Mention from $41/month.
Limitations: These tools do not monitor AI-generated responses at all. They track where humans mention you online, which is a useful input for understanding your citation potential, but they cannot tell you what ChatGPT or Claude actually says about your company. For AI visibility, they are background tools, not primary instruments.
The answer depends on where you are in your AI visibility journey:
Start with a dedicated AI visibility tool (per4mx or OtterlyAI) to understand your current position. Pair it with our 30-day GEO roadmap for a structured approach. You likely also need basic SEO foundations — if you do not already use Semrush or Ahrefs, consider adding one.
Keep your existing SEO tool (Semrush or Ahrefs) and add a GEO-specific platform. The SEO tool covers Google; the GEO tool covers ChatGPT, Claude, and Perplexity. They solve different problems and the data from each informs the other.
per4mx is the strongest option for Swiss and DACH B2B companies that want monitoring, analysis, content generation, and publishing in one platform. Its multilingual capabilities and Swiss market focus set it apart from tools built primarily for the English-speaking market.
OtterlyAI's analytics depth combined with Semrush's SEO data gives you comprehensive coverage. Add Brand24 for social listening to complete the picture. This is the most expensive approach but provides the broadest data set.
Before committing to any AI visibility tool, evaluate it against these criteria. Not all tools are transparent about their methodology, so asking these questions during your evaluation helps separate genuine capability from marketing claims.
When evaluating tools, consider the total cost of ownership — not just the subscription price but also the team time required to act on the tool's insights:
| Tool Stack | Monthly Cost | Team Hours/Month | Best For |
|---|---|---|---|
| per4mx alone | CHF 79-449 | 4-8 hours | Small teams, AI-first strategy |
| per4mx + Semrush | CHF 240-650 | 8-12 hours | Dual SEO+GEO strategy |
| OtterlyAI + Ahrefs | CHF 280-600 | 10-15 hours | Analytics-heavy teams |
| Full stack (per4mx + Semrush + Brand24) | CHF 420-900 | 12-18 hours | Enterprise with dedicated marketing team |
The "team hours" column is critical. A tool that costs CHF 149/month but requires 15 hours of team time to act on its insights is more expensive than a tool that costs CHF 299/month but generates content and publishes it directly. For Swiss SMBs where marketing headcount is limited, total cost of ownership — including team time — should drive the decision.
Here is a week-by-week guide to setting up your AI visibility tool stack efficiently:
No single tool covers everything. Traditional SEO tools do not monitor AI visibility. AI visibility tools do not replace SEO fundamentals. Social listening tools capture a different dimension entirely.
For Swiss B2B companies, the critical gap in 2026 is AI visibility monitoring — and that is where purpose-built tools like per4mx deliver the most value. The companies that invest in understanding and improving their AI presence today will be the ones AI models recommend tomorrow.
Yes, but it is time-consuming and inconsistent. Manual monitoring involves opening ChatGPT, Claude, Perplexity, and Google AI individually, typing each test prompt, and recording the results in a spreadsheet. For a ten-prompt baseline, this takes about an hour. Doing it weekly requires discipline, and the results lack the consistency and historical trending that automated tools provide. Manual monitoring works as a starting point to demonstrate the need for AI visibility investment, but for ongoing strategic management, a dedicated tool saves significant time and provides better data.
For most Swiss B2B companies, yes. The tools cover different channels that both contribute to business development. An SEO tool tells you how you rank in Google — still the dominant discovery channel. An AI visibility tool tells you what ChatGPT and Claude say about you — the fastest-growing discovery channel. Running both costs CHF 240-650/month combined, which is modest relative to the cost of customer acquisition in most B2B categories. If budget is truly constrained, start with the tool that addresses your bigger gap: if your Google rankings are strong but AI visibility is weak, start with per4mx; if both are weak, start with Semrush to build the SEO foundation first.
The timeline depends on your starting point and how quickly you act on the tool's insights. Companies that use per4mx to identify gaps, generate content, and publish immediately can see measurable AI visibility improvements within two to four weeks — particularly on Perplexity, which responds fastest to content changes. Translating visibility improvements into actual business leads takes longer and depends on your industry's buying cycle. Most Swiss B2B companies report attributable pipeline impact within three to six months of starting systematic AI visibility management. The tool itself typically pays for itself within the first quarter if it contributes to even one additional qualified lead.
Not necessarily. per4mx supports German, French, Italian, and English natively, allowing you to test prompts and generate content in all four Swiss business languages from a single platform. Semrush and Ahrefs also support multilingual keyword tracking. The key is ensuring that whatever tool you choose can test AI responses in the languages your buyers actually use — not just English. If a tool only operates in English, it is missing a significant portion of how Swiss buyers interact with AI tools.
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