The day in AI
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Research
23 Feb 2026AnthropicDetecting and preventing distillation attacks Anthropic says DeepSeek, Moonshot AI and MiniMax ran distillation campaigns through about 24,000 fraudulent accounts, generating over 16 million exchanges with Claude.23 Feb 2026AnthropicThe persona selection model Anthropic argues assistants act human-like because pretraining teaches them to simulate personas and post-training merely selects one.23 Feb 2026OpenAIWhy we no longer evaluate SWE-bench Verified OpenAI says SWE-bench Verified is contaminated and flawed and recommends SWE-bench Pro, retiring its own benchmark from frontier launches.