OpenAI has introduced GPT-4.5, named "Orion," its largest and most advanced AI model to date. GPT-4.5 boasts improved emotional intelligence, better alignment with user prompts, and reduced instances of generating incorrect information. While it excels in general-purpose tasks, it is not optimized for reasoning and faces competition from other advanced AI models. The model is available to developers via API, has started rolling out to ChatGPT's Pro plan, and broader availability is planned soon.