#gpt-5 3 items 6 мая OpenAI Releases GPT-5.5 Instant as New Default ChatGPT Model OpenAI models-llm 13 мая OpenAI Launches Daybreak: AI-Powered Vulnerability Detection Platform OpenAI tools 18 мая SOOHAK: Frontier LLMs Solve Hard Math But Fail to Recognize Unsolvable Problems research