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Perplexity AI AI failures
Every documented AI failure involving Perplexity AI on the AI Failure Index, classified by the mechanism that broke.
- Failures
- 3
- Highest severity
- High
- Span
- 2024 to 2026
- Failure modes
- 2
Perplexity AI misstates CLL research, allegedly contributing to delayed treatment
Perplexity AI provided inaccurate summaries of medical research to a user, in an account that says it led them to refuse a life-extending CLL treatment based on a misinterpretation of a clinical study. The error was later confirmed by the authors of the cited research.
- Confidence
- High (multi-source, primary)
Perplexity Comet AI browser vulnerable to indirect prompt injection attacks
Researchers from Brave and LayerX discovered an indirect prompt injection vulnerability in Perplexity's Comet AI browser. The flaw allowed attackers to use malicious URLs or webpage content to hijack the AI agent and exfiltrate sensitive user data from connected services like Gmail and Google Calendar.
- Confidence
- High (multi-source, primary)
ChatGPT and Perplexity AI Manipulated to Produce Explicit Content
ChatGPT and Perplexity AI were manipulated by users using prompts from TikTok to create explicit AI boyfriend personas. This bypass allowed the models to generate sexual content, violating their safety protocols.
- Confidence
- Medium (multi-source)
See how Realm catches these failure modes at runtime.
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