We asked ChatGPT, Claude, Gemini and Perplexity: What is the best antivirus software?
Here's every name they gave, in order, and who named it.
Ranked by how many of the 4 tools named it, then by its average place in their lists.
Asked through the ChatGPT API (gpt-5-mini).
Asked through the Claude API (claude-haiku-4-5).
Asked through the Gemini API (gemini-3.8-flash).
Sources it cited: av-test.org, av-comparatives.org, pcmag.com, av-comparatives.org
Asked through the Perplexity API (perplexity/sonar).
See what ChatGPT, Gemini, Claude, Perplexity and Google's AI say about your business, and what to fix so they name you.
We asked each AI tool the same question, "What is the best antivirus software?", with one fixed instruction: answer with a ranked list of specific products or businesses, and don't ask a follow-up question. We read the names from each answer in the order given. A name's place in the table comes from how many tools named it, then its average position.
ChatGPT, Claude and Gemini answered from what they already know; Perplexity searched the web live, which is why its list can include newer names. AI answers change week to week, so every answer carries its date. Nobody paid to be on this page. See our methodology.
Can't find your answer? The help center covers every part of the report, or ask us directly.
Asked "What is the best antivirus software?" on October 18, 2026, ChatGPT named Bitdefender Total Security, Norton 360, Kaspersky Total Security first.
Bitdefender Total Security was named by every AI tool we asked. Every tool put Bitdefender Total Security first. 13 names were mentioned by only one tool, so being named once is no guarantee the others know you.
We ask again regularly and show the date of every answer. This page was last updated on October 18, 2026. AI answers change from week to week.
AI tools name businesses they can read, understand and trust: an open robots.txt for AI crawlers, a clear description of what you do on your own site, structured data, and mentions on other sites. Scan your site free to see what's missing.