Consensus pick#1
Microsoft Defender
Perplexity ✓Gemini (Google) ✓ChatGPT (OpenAI) ✓Claude (Anthropic) ✓
Most often praised for built-in and free.
Mentioned in
48%
Recommended in
39%
Score
49.8
AI Buyer's Guide · Antivirus Software
The best antivirus software, according to AI
Every month we ask ChatGPT, Claude, Gemini, and Perplexity 50 real buyer questions about antivirus software — 1,198 answers this cycle — and count who they actually recommend. No sponsorships, no affiliate rankings: just what the AIs said in July 2026, measured.
ChatGPTClaudeGeminiPerplexity
The verdict
Runner-up#2
Bitdefender
Perplexity ✓Gemini (Google) ✓ChatGPT (OpenAI) ✓Claude (Anthropic) ✓
Most often praised for lightweight and reputable.
Mentioned in
55%
Recommended in
41%
Score
47.9
Third#3
Malwarebytes
PerplexityGemini (Google) ✓ChatGPT (OpenAI) ✓Claude (Anthropic)
Most often praised for free version available and reputable.
Mentioned in
40%
Recommended in
33%
Score
39.6
Best for…
Winners are the brand the AIs recommend most often on that slice of our question panel — each use case covers the answers to its own set of buyer questions, asked three ways and repeated three times per model.
In their own words
Claude (Anthropic)
"I think I have a virus on my laptop, what steps should I take?"
…important accounts until the device is cleared ## Diagnosis & Removal 3. **Run a full antivirus scan** - Use your existing antivirus (Windows Defender, etc.) or install a reputable one - Consider a second opinion scanner like Malwarebytes for additional detection 4. **Boot into Safe Mode** if the virus is preventing normal s…
Gemini (Google) · recommended
"My laptop seems infected with malware, what's the best way to handle this?"
…or Apple Silicon Macs). --- ### Phase 3: Scan and Remove Once in Safe Mode, it’s time to find and destroy the malware. #### Step 1: Use Windows Defender Offline Scan (Windows Users) If you are on Windows, the built-in antivirus has a powerful offline mode that scans your computer before the operating system even boots up. 1. Go to…
Verbatim excerpts from this cycle's stored answers — every ranking on this page links back to receipts like these on the brand pages.
Full standings
| # | Brand | Score | Per model |
|---|---|---|---|
| 1 | Microsoft Defender | 49.8 ±2.8 | |
| 2 | Bitdefender | 47.9 ±2.6 | |
| 3 | Malwarebytes | 39.6 ±2.7 | |
| 4 | Norton | 36.3 ±2.6 | |
| 5 | ESET | 26.9 ±2.6 | |
| 6 | Kaspersky | 25.5 ±2.4 | |
| 7 | Sophos | 23.7 ±2.4 | |
| 8 | Avast | 20.8 ±1.9 |
Showing 8 of 17 tracked brands · Full antivirus software leaderboard with movers and cited sources →
Questions people ask
Which antivirus software does ChatGPT recommend most?
In our July 2026 measurement, ChatGPT's most-recommended antivirus software brand is Microsoft Defender.
Do ChatGPT, Claude, Gemini, and Perplexity agree on the best antivirus software?
Microsoft Defender leads the consensus this cycle. This cycle the four assistants are broadly aligned across the category.
How is this measured?
Every month we ask ChatGPT, Claude, Gemini, and Perplexity a frozen panel of 50 real buyer questions about antivirus software, each phrased three ways and repeated three times. We detect which brands each answer mentions and explicitly recommends, then score every brand 0–100 with statistical confidence intervals. Nothing on this page is sponsored, and paying never affects a score.
Know when AI changes its mind
One digest email per cycle, only when something statistically real happens — a new consensus pick, a brand the AIs stopped recommending.
Scores are 0–100 visibility scores with bootstrap 95% confidence intervals; mention and recommendation rates are averaged across the four core assistants. helloranked accepts no payment for placement — see the full methodology. Raw data is open (CC BY 4.0) on the data page.
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