Weekly Hallucinations: Claude Sonnet 5, Nano Banana 2 Lite, and Fable 5's Return

Anthropic sells shovels to pharma and starts digging too: Claude Science for researchers, plus its own drugs for neglected diseases. Meanwhile LongCat 2.0 quietly held OpenRouter's top 5 for two months as Owl Alpha, and behind it sits a food-delivery firm that trained the model on Chinese chips, skipping Nvidia entirely.