GPT-4.5 released

OpenAI has introduced GPT-4.5, its latest large language model (LLM), as a research preview. While not positioned as a groundbreaking "frontier model," GPT-4.5 marks a significant shift in OpenAI's approach, prioritizing natural and intuitive interactions.   One of the most striking aspects of GPT-4.5 is its enhanced ability to engage in human-like conversations. OpenAI CEO Sam Altman describes it as the first model that feels like talking to a thoughtful person, capable of offering good advice. This conversational fluency stems from a combination of new supervision techniques and traditional training methods like supervised fine-tuning and reinforcement learning from human feedback.   GPT-4.5 also boasts a significant reduction in "hallucinations," instances where the model generates incorrect or nonsensical information. This improvement is attributed to the model's broader knowledge base and stronger alignment with user intent, achieved through scaled-up unsupervised learning. In benchmark tests, GPT-4.5 demonstrated a 40% reduction in hallucinations compared to its predecessor, GPT-4o. Key Features and Improvements Enhanced Conversational Abilities: GPT-4.5 excels at engaging in natural, human-like conversations, with improved emotional intelligence and a better understanding of user intent. Reduced Hallucinations: The model generates fewer inaccurate or nonsensical outputs, thanks to its broader knowledge base and stronger alignment with user intent.   Improved Accuracy: GPT-4.5 demonstrates higher accuracy in various tasks, including writing, programming, and problem-solving.   Increased Efficiency: Despite being a larger model, GPT-4.5 boasts improved computational efficiency compared to GPT-4.   Multimodal Capabilities: GPT-4.5 supports image inputs and can generate inline SVG images. It does not yet have voice or video features.