What's the best AI search tool? An agency view
What's the best AI search tool? We separate the engines people search with from the tools brands use to track them, and explain what we run client programs on.
Clients ask us this in two different ways, and it is worth separating them, because the answers have almost nothing in common.
One version comes from people who want to use AI search themselves: which of ChatGPT Search, Perplexity, Google AI Mode or Gemini should I rely on? The other comes from marketing leads who have noticed their buyers use those tools and want to know which software shows them how the brand appears. We get the second question far more often, since it is the one with a budget attached.
The engines: we do not crown one
We are not going to rank answer engines on quality. Results depend on what you ask, where you are and which version you hit that week, and we do not run a benchmark that would let us claim otherwise. What we do tell people is a short test.
Take ten real questions, including a comparison, a local query and one vague one. Run them in the engines you are considering. Look at the sources behind each answer and check whether they support the claim. Repeat in a month, because the products change quickly.
The reason this matters for brands is simple. Different engines name different brands for the same question. A buyer using one engine may see you, and a buyer using another may not. That is the whole business case for tracking.
The tools: what we look for
When the question is about software that tracks AI search, we look at five things.
Coverage. Does it monitor the engines your clients' buyers actually use, and does it say whether it captures the real interface or samples through an API? Promptwatch, for instance, monitors ChatGPT Search, Google AI Overviews, Google AI Mode, Copilot, Gemini, Perplexity, Amazon Alexa and Meta AI through the real interfaces, and tracks models such as Claude, DeepSeek, Mistral and Grok via API.
Explanation. A score tells you where you stand. Citation analytics tell you why. Crawler logs tell you whether the engines can read your pages at all.
Outcomes. Visitor analytics that attribute AI-referred visits and conversions turn a visibility chart into a business conversation.
Action. Content gap analysis, a prioritized to-do list, and the ability to write and publish against gaps.
Honesty. A vendor that promises a ranking is a vendor to avoid.
What we run client programs on
Promptwatch is where our client programs live. Most tools in this space answer one question: was the brand mentioned? Promptwatch also answers the next three. Why is it visible, through IP-verified AI crawler logs. Where does the engine find its information, through citation analytics down to page, Reddit and YouTube level. What does the traffic do, through visitor analytics with conversions. And how do we improve, through content gap analysis, the Action Board and content generation that publishes to WordPress, Webflow and Framer.
Day to day, we lean on a few specific features. Prompt Explorer suggests prompts from Search Console and People Also Ask. Query fan-outs show what a model searched for behind the scenes. The Action Board's Discovery agent investigates the data weekly and suggests up to five evidence-backed actions. Agent Chat answers follow-up questions on live data and can produce a PDF when a client wants something to read.
On plans, Explore is free with 10 prompts on ChatGPT only, which is fine for a first look. Essential is $95 a month. Professional at $245 is where crawler logs begin, which is why we rarely recommend Essential for a serious program. Business is $579. Agencies get plans from $199 a month with unlimited projects and prompts.
Where other tools fit
We would not say other tools are wrong for everybody. AthenaHQ and Scrunch AI are dedicated GEO platforms with their own strengths, a GEO score and Action Center on one side, an Agent Experience Platform and site audits on the other. Profound is an enterprise product sold more as a broad marketing agent suite. Semrush and Ahrefs add AI tracking to the SEO work many teams already do, which is a reasonable first step for a few prompts. Lighter trackers such as Otterly.AI and Peec AI are quick to start.
Our reason for choosing Promptwatch is narrow and practical: when a client asks why they are missing from an answer, we want the crawler logs and citation data in the same place as the prompt results.
Caveats we mention at kickoff
No tool can guarantee that an engine will recommend a client. Tracked prompts are a sample. Results vary by run, so we read trends over weeks. And the platform diagnoses while the work, fixing access and publishing better pages, does the improving.
So the best AI search tool depends on the question. For your own searching, test with your own questions. For your brand, pick the one that explains its results.