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Best antivirus

We asked ChatGPT, Google AI Overviews, Gemini, Perplexity and Grok for the best antivirus on 20 Oct 2026 (US, English); 4 of the 5 answered, recommending 4 products between them and naming 2 more.

Products AI recommends for best antivirus, by engine
Product Score ChatGPT AI Overview Gemini no answer Perplexity Grok
Bitdefender 10recommended by 4 of 4 Bitdefender: recommended by ChatGPT Bitdefender: recommended by AI Overview (Google) Bitdefender: no answer from Gemini Bitdefender: recommended by Perplexity Bitdefender: recommended by Grok
Microsoft Defender Antivirus 6.2recommended by 3 of 4 Microsoft Defender Antivirus: recommended by ChatGPT Microsoft Defender Antivirus: recommended by AI Overview (Google) Microsoft Defender Antivirus: no answer from Gemini Microsoft Defender Antivirus: not named by Perplexity Microsoft Defender Antivirus: recommended by Grok
Norton 5.8recommended by 2 of 4 · named by 4 Norton: named by ChatGPT, not recommended Norton: recommended by AI Overview (Google) Norton: no answer from Gemini Norton: named by Perplexity, not recommended Norton: recommended by Grok
Malwarebytes 4.4recommended by 2 of 4 · named by 3 Malwarebytes: recommended by ChatGPT Malwarebytes: recommended by AI Overview (Google) Malwarebytes: no answer from Gemini Malwarebytes: not named by Perplexity Malwarebytes: named by Grok, not recommended
Named, not recommended
ESET 0.6named by 1 of 4 ESET: not named by ChatGPT ESET: not named by AI Overview (Google) ESET: no answer from Gemini ESET: not named by Perplexity ESET: named by Grok, not recommended
McAfee 0.6named by 1 of 4 McAfee: not named by ChatGPT McAfee: not named by AI Overview (Google) McAfee: no answer from Gemini McAfee: not named by Perplexity McAfee: named by Grok, not recommended

RecommendedNamed, not recommendedNot named

Score: each engine’s top pick earns 1 point, each later pick 0.1 less, a product only named 0.25; added over the engines that answered and scaled to 10.

Gemini gave no answer this run and is left out of the counts.

ChatGPT

If you want the short answer, I'd buy Bitdefender Total Security for most home computers. It combines excellent malware protection with ransomware defense and useful security features, and it has performed very well in independent testing. AV-Comparatives AV-TEST

But you may not need to pay for antivirus at all. Here's how I'd choose.

My top antivirus picks for 2026

(Best overall)

1. Bitdefender Total Security

Windows, Mac, Android and iOS

My first choice for paid protection. Strong malware detection, ransomware protection and additional privacy and family-safety features. It scored 99.5% in AV-Comparatives' February–May 2026 real-world protection test. AV-Comparatives

Example listing: $40.93 for 5 devices / 1 year at Walmart; prices and renewal rates vary.

Official website · View price at Walmart


2. Norton 360 Deluxe

Best all-in-one security package

A good alternative if you want antivirus bundled with features such as a VPN, cloud backup and parental controls. Especially worth comparing if you have several devices or children at home. Tom's Guide

Official website


3. Microsoft Defender Antivirus

Best free option for Windows

Built into Windows, with no separate antivirus subscription required. It scored 6/6 for protection and usability in AV-TEST's April 2026 assessment. For everyday browsing, shopping and email, it's a sensible starting point. AV-TEST

Windows security information

Which one should you actually buy?

If you want… My recommendation
Strong paid protection Bitdefender Total Security
VPN and family features bundled together Norton 360 Deluxe
Good protection without a subscription Microsoft Defender
Extra protection on a computer you suspect is infected Malwarebytes is worth considering

Three things to check before paying:

  • Renewal price: Introductory deals can be much cheaper than the second year.
  • Device limit: Make sure the subscription covers all your computers and phones.
  • Existing protection: Avoid running two full real-time antivirus programs simultaneously.

One question so I can narrow this down to the best purchase for you:

What device do you primarily want to protect?

1. Your device

Windows PC or laptop

Apple Mac

Android phone or tablet

iPhone or iPad

A mix of devices


2. Your budget

Free only

Under $50 per year

$50–$100 per year

Best protection regardless of price


3. How many devices?

Just one

1–3 devices

4 or more devices

[Find my best option]

AI Overview (Google)

Bitdefender and Norton are the best paid antivirus options for 2026, while Microsoft Defender is the best built-in free option for Windows. PCMag Cybernews

Top Antivirus Options

Bitdefender Antivirus Plus / Total Security CNET All About Cookies

  • Best for: Overall protection, low system impact, and value.
  • Highlights: Consistently earns top scores in independent lab tests (AV-TEST and AV-Comparatives) with minimal performance slowdown. Includes multi-layered ransomware protection, an isolated browser for safe banking, and strong family plans. CNET All About Cookies

Norton AntiVirus Plus / Norton 360 All About Cookies

  • Best for: Feature-packed all-in-one security suites.
  • Highlights: Features near-perfect malware detection scores, a smart firewall, dark web monitoring, a built-in VPN, and a money-back virus protection guarantee. All About Cookies

Malwarebytes Premium CNET

  • Best for: Lightweight real-time defense and ease of use.
  • Highlights: Tied with Bitdefender in recent industry testing for strong malware blocking, low resource usage, and clean navigation. CNET

Microsoft Defender

  • Best for: Free, zero-hassle Windows protection.
  • Highlights: Pre-installed and active on Windows 10 and 11. It handles core real-time threat defense well enough that many users do not need a paid third-party tool.

Quick Pricing & Selection Guide

Budget / Single PC: Norton AntiVirus Plus typically runs around $29.99 for the first year .

Families / Multi-Device: Bitdefender or Norton 360 plans cover multiple devices (ranging from 5 to 25 devices) and add privacy tools like password managers and VPNs. PCMag

To help narrow down the best choice, tell me:

What operating system(s) are you trying to protect (Windows, Mac, Android, iOS)?

How many devices do you need to cover?

Are you looking for a free option or a paid suite with extras like a VPN or parental controls?

Perplexity

Bitdefender Antivirus Plus is the best pick for most people: reviewers highlight its strong malware protection and easy-to-use apps. If you want a broader suite with extras like parental controls and cloud backup, consider Norton 360 Deluxe.pcmag.comtechradar.compcworld.com

Grok

There isn't a single "best" antivirus software that fits everyone—it depends on your needs like budget, number of devices, extra features (e.g., VPN, parental controls), and platform (Windows, Mac, mobile). However, independent lab tests from sources like AV-TEST, AV-Comparatives, and PCMag consistently rank a few top performers for real-world protection in 2026. www.av-test.org

Top Lab-Tested Performers (as of late 2026)

These excel in malware detection, blocking, low false positives, and system performance:

  • Bitdefender Total Security (or Antivirus Plus for basics):
    Frequently tops or ties for best overall in AV-TEST (perfect 6/6 scores across protection, performance, and usability), AV-Comparatives (Advanced+ awards in recent malware tests), and PCMag/TechRadar roundups. It delivers outstanding malware/phishing/ransomware protection, extra tools like a secure browser for banking, anti-theft, and multi-device coverage (up to 5). Minimal system impact; great for most users. PCMag calls Antivirus Plus an Editors' Choice winner for top-tier features at a strong value. www.pcmag.com

  • Norton 360 Deluxe (or Norton Antivirus Plus):
    Another Editors' Choice and frequent leader with perfect lab scores, strong real-world blocking, and extras like an unlimited VPN, parental controls, cloud backup, and dark web monitoring. Excellent for families or those wanting comprehensive "internet security suite" features (including identity protection add-ons). Slightly pricier after the first year and can feel heavier during full scans. www.techradar.com

  • ESET Security Ultimate or ESET NOD32:
    Strong in AV-TEST and AV-Comparatives (perfect or near-perfect scores). Known for lightweight performance, excellent anti-exploit/anti-ransomware tools, and tech-savvy bonuses like device control. PCMag highlights NOD32 as a great single-PC option with near-perfect lab results. www.av-test.org

  • Microsoft Defender Antivirus (built into Windows 11):
    Surprisingly excellent—perfect or near-perfect in AV-TEST and AV-Comparatives. No cost, always updated, and often low-impact. Ideal for basic Windows users; many experts say it's sufficient without a paid upgrade. www.av-test.org

Other notables like Malwarebytes Premium (fast scans and removal) or McAfee (strong extras) also score well in some areas but aren't always the absolute top in every lab. www.pcmag.com

Quick Buying Advice

  • For most people / best overall protection + value: Start with Bitdefender. It's lightweight, feature-rich, and consistently tops independent tests without breaking the bank (often ~$50–80/year depending on deals).
  • For families / maximum extras: Go with Norton 360 Deluxe.
  • For unlimited devices or mobile focus: McAfee+ or Bitdefender.
  • Free or minimal: Microsoft Defender is hard to beat unless you need advanced extras.

Key tips before buying:

  • Look for current promotions (first-year pricing is often discounted 50%+ off—check vendor sites or reputable retailers).
  • All top options offer 30-day money-back guarantees.
  • Prioritize multi-platform coverage if you use Windows + Mac + phone.
  • Extra features like VPN or parental controls are nice but not always needed for core antivirus (most threats come from email, downloads, and phishing).
  • Paid software adds value for real-time cloud protection, ransomware rollback, and multi-device management, but even free options like Defender are far better than none.

Tests can evolve quarterly, so cross-check the latest on AV-TEST.org or AV-Comparatives.org for the most current results. If you share more details (e.g., your main device(s), budget, or must-have features), I can narrow it down further!

Sources

Pages the engines cited

Ranked by how many engines cited each page.

  1. The Best Antivirus Software We've Tested for 2026www.pcmag.com cited by AI Overview (Google), Perplexity, Grok (opens in a new tab)
  2. Test antivirus software for Windows 11 - August 2026 | AV-TESTwww.av-test.org cited by ChatGPT, Grok (opens in a new tab)
  3. We've tested the best antivirus software and these are the 5 I recommend right nowwww.tomsguide.com cited by ChatGPT, Perplexity (opens in a new tab)
  4. Best Antivirus 2026: A Tight Race, but Two Providers Lead the Packwww.cnet.com cited by AI Overview (Google), Perplexity (opens in a new tab)
  5. Best Antivirus Software in 2026 for PC: Ranked and Reviewedwww.techradar.com cited by Perplexity, Grok (opens in a new tab)
  6. AV-Comparatives - Real-World Protection Test February-May 2026av-comparatives.org cited by ChatGPT (opens in a new tab)
  7. AV-TEST - Test antivirus software for Windows 11 - April 2026www.av-test.org cited by ChatGPT (opens in a new tab)
  8. The Best Antivirus Software for 2026cybernews.com cited by AI Overview (Google) (opens in a new tab)
  9. The Best Antivirus Software of 2026 [Expert Tested]allaboutcookies.org cited by AI Overview (Google) (opens in a new tab)
  10. Google Searchwww.google.com cited by AI Overview (Google) (opens in a new tab)
  11. Bevor Sie zur Google Suche weitergehenwww.google.com cited by AI Overview (Google) (opens in a new tab)
  12. I trust these 7 antivirus software suites to keep my Windows PC safewww.pcworld.com cited by Perplexity (opens in a new tab)
  13. The best antivirus software to protect your computer in 2026www.zdnet.com cited by Perplexity (opens in a new tab)
  14. The Best Antivirus Software for 2026uk.pcmag.com cited by Perplexity (opens in a new tab)
  15. The Best Antivirus Software for 2026au.pcmag.com cited by Perplexity (opens in a new tab)
  16. The Best Antivirus Software of 2026www.security.org cited by Perplexity (opens in a new tab)
  17. 8 Best Antivirus Software – Forbes Advisorwww.forbes.com cited by Perplexity (opens in a new tab)