FACTS Benchmark: Choosing Models for High-Stakes Production Where Hallucinations Matter

https://fair-wiki.win/index.php/HalluHard_30%25:_What_Claude_Opus_4.5%27s_Realistic_Conversation_Test_Means_for_Production_Chatbots

When hallucinations carry real consequences - clinical advice, legal briefs, financial decisions, or safety-critical automation - CTOs and ML leads need an evidence-based way to pick which language model to run in production