WATCH The debut of Yahoo Finance's new show, Asking for a Trend CCC - CoinMarketCap • USD Cronos USD (CRO-USD) Follow 0.125772 +0.004399 (+3.62%) As of 9:30 PM UTC. Market Open. Data provided by All News AT&T says it's developed a ChatGPT-based tool with help from Microsoft so that its employees can safely use it Telecommunications company AT&T said Microsoft, a major OpenAI investor, had helped it develop the generative AI tool safely.