Elon Musk Rushes Grok 4.5 to the Public as OpenAI Preps GPT-5.6

Elon Musk said SpaceXAI will release Grok 4.5 to the public tomorrow. He called it an Opus-class model that runs faster and costs less. The launch would land around the same time OpenAI moves its GPT-5.6 models toward broad availability. Grok 4.5 Meets a GPT-5.6 Deadline Grok 4.5 runs on xAI’s 1.5 trillion-parameter V9 foundation,