AI Visibility Tools 2026: 34 GEO and AI Search Monitoring Tools Compared

If you want to measure your AI visibility, that is, whether ChatGPT, Perplexity, Gemini, Google AI Overviews or AI Mode mention your brand, you need an AI visibility tool. You will also see them called GEO tools, AI search visibility tools, answer engine optimization (AEO) tools or prompt tracking tools. For generative engine optimization (GEO), such a tool sends the same prompts, meaning fixed questions, on a schedule and tracks brand mentions and linked sources in the answers. This page compares 34 AI visibility tools side by side, with the price per answer and a source for every value. The biggest difference is not the price but how a tool collects its answers, and whether it can measure from the country you sell in. Data as of October 30, 2026, with the prices shown to visitors from Germany as of October 31, 2026.

GEO tools by the numbers: what 34 vendors document (as of October 30 and 31, 2026)

The most important differences between GEO tools can be counted. All figures come from my review of the vendor pages of 34 GEO tools as of October 30, 2026, and the euro check of October 31, 2026.

• Query method

  • 11 interface
  • 9 both
  • 1 API only
  • 13 not stated

  Of 34 GEO tools, 11 say they query the user interface of the AI systems, and 9 use the interface or the model API depending on the engine. 1 tool queries only through the model API (Conductor), and 13 do not say.

• Runs per prompt

  • 12 documented
  • 22 not stated

  12 of the 34 GEO tools document how often a prompt runs per measurement, and all 12 state one answer per prompt, engine and measurement.

• Data providers

  • 5 name a data provider
  • 29 not stated

  5 of the 34 GEO tools name a provider for their queries, 29 do not say, and no vendor states outright that it uses its own technology.

• Germany location

  • 13 yes
  • 21 not stated

  13 of the 34 GEO tools explicitly list Germany as a selectable location.

• EU data

  • 7 in the EU
  • 4 outside the EU
  • 23 not stated

  7 of the 34 GEO tools document data storage in the EU, 4 document hosting outside the EU, and the other 23 do not say.

• Currency

  • 10 euros
  • 20 US dollars only

  Of 30 GEO tools with public pricing, 14 show euro prices to visitors from Germany and 16 show US dollars only.

• Free trial

  • 25 free trial or free plan
  • 9 not stated

  25 of the 34 GEO tools offer a free trial or a free plan, 19 of them with a stated length.

For 4 of the 34 tools, the query method is only described in the vendor's blog, not in the documentation or help center: Profound, LLMrefs, Similarweb and Writesonic. What this means for your choice: the details that decide how meaningful the data is, namely query method, runs and data provider, are missing for a large share of vendors.

Interface or API: how GEO tools collect their answers

AI visibility tools get their answers in two ways. Through the interface, the tool asks the question the way you would type it into ChatGPT, Perplexity or Google and reads the answer users see there. Through the model API, it queries the language model directly. What this means for you: web search, sources and Product Cards can differ a lot between the two.

I tested how big the difference is with 5 prompts from my AI Mention Index, 5 runs each on three routes. I queried the logged-out ChatGPT interface with Germany as the location, the API without web search and the API with web search. The interface runs took place on September 5 and 6, 2026, the API runs on October 1, 2026. In the interface, Telekom was the first provider recommended in 7 of 25 runs, through the API without web search in 19 of 25 and with web search in 11 of 25. Product Cards only appeared in the interface, in 13 of 25 runs. The API without web search cited no source in any of the 25 runs, and one API run without a location answered for the US market, with US providers and prices in dollars.

Both routes still have their purpose. The interface shows you what users see, meaning brands, sources and Product Cards. The API without web search shows what the model has learned about your brand. The API with web search returns 3 to 8 search queries per run that you don't see in the interface.