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OpenAI o3 hallucinates 33%. The fix isn't a better model.
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Ethan
April 22, 2026
Summary
OpenAI o3 hallucinates 33% on PersonQA, 51% on SimpleQA. These are factual grounding tests, not trick questions. The fix isn't a bigger model — it's infrastructure. Ingest your actual data, extract structured features, build retrievable indexes.
short-formhallucinationagentic-ragopenai-o3multimodal-infrastructuregrounded-retrieval
About this video
OpenAI o3 hallucinates 33% on PersonQA, 51% on SimpleQA. These are factual grounding tests, not trick questions. The fix isn't a bigger model — it's infrastructure. Ingest your actual data, extract structured features, build retrievable indexes. mixpeek.com/agentic-rag