OpenAI goes on defense as Anthropic surges after Pentagon fallout 

OpenAI is in the hot seat this week over the artificial intelligence company’s new deal with the Pentagon, struck just hours after the agency’s negotiations with competitor Anthropic over safety guardrails fell apart.    The response was nearly immediate, with uninstalls of its flagship ChatGPT app rising 295 percent day-over-day last Saturday, according to reports citing market intelligence provider Sensor Tower. Meanwhile, Anthropic’s Claude app hit No. 1 in the App Store as users…