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OpenAI; Google; xAI; DeepSeek; Meta AI failures

Every documented AI failure involving OpenAI; Google; xAI; DeepSeek; Meta on the AI Failure Index, classified by the mechanism that broke.

Failures
1
Highest severity
High
Span
2026
Failure modes
1
By failure mode
By severity
FI-0324HealthcareHigh
Hallucination

BMJ Open study finds half of leading chatbots give problematic medical advice

A BMJ Open study of five major chatbots found about half produced problematic medical answers, with a notable share being highly problematic due to false balance; this was reiterated by Bloomberg and NBC News.

Confidence
High (multi-source, primary)
OpenAI; Google; xAI; DeepSeek; Meta AI4 sourcesPrimaryPublicApr 2026

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