Tech Feb 24, 2026 8 min Large-Scale Unauthorized Distillation of Claude and the Collapse of SWE-bench Hit on the Same Day Anthropic accused three Chinese AI companies of distilling Claude, and on the same day OpenAI retired SWE-bench Verified. Training fraud and evaluation flaws exposed simultaneously on February 23, 2026. AI Security Anthropic DeepSeek Benchmark LLM OpenAI SWE-bench