Antivirus Software

Bitdefender vs Microsoft Defender

AI visibility head-to-head, Antivirus Software — run #89 (2026-08-01). Current scores are statistically indistinguishable (overlapping 95% CIs).

Bitdefender

46.7
95% CI44.149.1
Industry rank#2
openai45.3
anthropic42.5
google54.8
perplexity38.8
vs

Microsoft Defender

48.3
95% CI45.550.6
Industry rank#1
openai49.5
anthropic46.8
google47.3
perplexity38.1

Share of answers mentioning each brand, split by the intent behind the question. The panel asks 10 prompts of each type, so a lead here shows where one brand wins — not just that it wins overall.

Question typeBitdefenderMicrosoft Defender
Recommendations
What's the best option for me?
83%48%
Comparisons
How do the top options stack up?
25%18%
Ready to buy
Which one should I actually get?
61%45%
Problem-solving
I have this problem — what fixes it?
52%56%
Informational
How does this kind of product work?
28%50%

Bold marks the higher point estimate; the headline verdict above uses non-overlapping confidence intervals. Methodology

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