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Signal is an AI visibility platform for Answer Engine Optimization (AEO), from the team behind Metrics Hive. It tracks how AI answer engines like ChatGPT, Gemini, and Google AI Overviews mention and describe your brand, which competitors appear alongside you, and which sources each engine cites.

Answer Engine Optimization (AEO), also called Generative Engine Optimization (GEO) or LLM Optimization (LLMO), is the practice of measuring and improving how often AI answer engines mention and cite your brand. Instead of ranking in a list of blue links, the goal is to be the source an AI quotes in its answer.

SEO is about ranking pages in traditional search results, while AEO and GEO are two names for the same newer discipline: getting mentioned and cited inside AI-generated answers from tools like ChatGPT, Perplexity, and Google AI Overviews. The two overlap, because AI engines run web searches and cite the pages they find, but success is measured differently: by how often and how favorably an AI names your brand, not by your position on a results page. Signal measures the AEO side, including the web searches AI engines fan a prompt out into and the sources they cite.

Every plan includes ChatGPT, Gemini, and Google AI Overviews. You can add Google AI Mode, Perplexity, Copilot, Claude, Mistral, DeepSeek, Qwen, and Kimi as extra platforms, and Growth and Pro plans include grounded answers from GPT Search, Claude, and Grok with their own web search. Where possible, answers come from the real consumer apps your customers use rather than an API.

Signal runs a fixed set of prompts across AI engines every day and scores each prompt by how often your brand appears in the answers, from 0 to 100%. It also calculates share of voice (your share of brand mentions versus your competitors), sentiment (whether the answers that mention you praise or criticize you, scored 0 to 100), and position (where you rank among the brands an answer names), and breaks down which domains and URLs the engines cite. Because AI answers vary from run to run, Signal reports trends, not single results.

Add your website to Signal and it suggests the questions your buyers are likely to ask, along with your competitors. Signal then runs those prompts in ChatGPT every day and records every answer: whether your brand was mentioned, which competitors were named, and which sources were cited. ChatGPT is included on every plan.

Starter is $49/month, Growth $149/month, and Pro $349/month, with two months free on annual billing. Every plan includes three AI platforms, and extra platforms are available as add-ons. Enterprise plans with custom limits are priced individually.

No. Signal is fully hosted. Sign up, choose a plan, add your website, and Signal handles collecting and analyzing every AI answer for you.