SEO tools work the search half of discovery. They tell you where you rank when someone types a query into Google. SignalTo works the AI-answer half: what ChatGPT, Claude, Perplexity and Google AI say when someone asks a question. Those are not competing tools. They are doing different jobs.
The gap SEO tools cannot see
When a prospect asks ChatGPT which accounting firm they should use, or asks Perplexity to compare two software products, the answer comes back as a paragraph, not a list of links. SEO tools have no view into that answer. They track rankings, clicks, and keyword positions, which are search metrics. None of that tells you whether AI mentioned you, what it said, or whether it was accurate.
There is no equivalent of Google Search Console for AI platforms. ChatGPT does not report impressions or mention counts. That gap is what SignalTo was built to fill.
What SEO tools do well
Semrush, Ahrefs and tools like them are built for search: keyword research, rank tracking, backlink analysis, technical audits, SERP visibility. They are well-suited to that job. If the question is "how do we rank higher on Google", they are the right tool.
The shift happening now is that a growing share of discovery bypasses the search results page entirely. Someone researches a purchase by asking an AI. The AI answers. They act on that answer without clicking through to any website. SEO tools were not designed for this, and adding an AI feature to an existing search tool is a different thing from being built around the AI-answer layer from the start.
What SignalTo does
SignalTo monitors how the major AI platforms describe your business, in response to the kinds of questions your prospects actually ask. It scores your AI alignment across ChatGPT, Claude, Perplexity and Google AI Overviews, flags gaps and hallucinations, and produces the fixes: draft content, structured data, infrastructure files. Not a report of problems. The actual changes.
SignalTo also covers SEO, with keyword tracking, SERP analysis, backlink health and 26 SEO rule kinds built in. For businesses who want one platform managing both channels, that is what it offers. For businesses already running a dedicated SEO platform, SignalTo sits alongside it, handling the AI-answer layer that the SEO tool cannot see.
Different job, different measure of success
The metric for an SEO tool is rankings and organic traffic. The metric for SignalTo is AI Alignment Score: how accurately and how often the AI platforms describe you correctly, cite you, and recommend you. Those are different measures because they are measuring different things. For how the two dimensions relate, see GEO alongside SEO. For a broader picture of what tools exist in the GEO space, see the GEO tools landscape.
Common questions
Is SignalTo a replacement for Semrush or Ahrefs?
No. SEO tools like Semrush and Ahrefs optimise for search engine rankings: keywords, backlinks, SERP visibility, technical health. SignalTo manages how AI systems like ChatGPT, Claude, Perplexity and Google AI describe your business. They work different halves of discovery. SignalTo also covers SEO alongside GEO, so some users find it can carry both, but it is not positioned as a cheaper version of an SEO tool.
What do SEO tools miss that SignalTo covers?
SEO tools measure where you rank when someone searches. They do not track what AI says when someone asks. ChatGPT does not report how often your brand is mentioned, what it says about you, or whether it is accurate. SignalTo monitors that gap across ChatGPT, Claude, Perplexity and Google AI Overviews, and produces the fixes.
Do I still need an SEO tool if I use SignalTo?
SignalTo includes a full SEO dimension: keyword tracking, SERP analysis, backlink health, and 26 SEO rule kinds. For businesses who want one platform managing both channels, SignalTo does it. Businesses already invested in a dedicated SEO tool can continue using it alongside SignalTo for the AI-answer layer.