Otterly.ai is probably the most popular self-serve way into AI visibility monitoring. $29 a month, easy to start, used by tens of thousands of people. It tracks how your brand and your prompts perform across AI search over time.
These two are the closest comparison on this page. Both cheap, both self-serve, no sales call either way. Otterly has the longer track record and covers more surfaces. Read the base plan carefully before you decide, though. The $29 Lite tier covers ChatGPT, AI Overviews, Perplexity and Copilot. Claude and Gemini are add-ons you pay extra for, and you are metered at 15 prompts a month. Two of those four surfaces already run on OpenAI and Gemini, so what you are really choosing between is Perplexity on their side and Claude on ours. Ours is $10 less with all three model families in the base price, and it gives you the llms.txt, the FAQ, the citation targets, and a record of what your mentions did afterwards.