Model Overview Card for Chat GPT-4.5 Preview

Basic Information

• Model Name: Chat GPT-4.5 Preview
• Developer/Creator: OpenAI
• Release Date: February 27, 2025
• Version: 4.5
• Model Type: Large Language Model (LLM)

Description

Overview:

GPT-4.5 Preview is OpenAI's latest general-purpose language model, designed to advance capabilities in reasoning, creativity, and conversational coherence. It builds upon GPT-4 with a broader knowledge base, improved alignment with user intent, and enhanced emotional intelligence (EQ). The model is positioned as a research preview and is OpenAI’s largest and most knowledgeable model to date.

Key Features:

• Expanded Knowledge Base: Incorporates a broader range of topics and domains.
• Improved Instruction Following: Better at understanding user intent and generating nuanced responses.
• Reduced Hallucinations: Demonstrates lower rates of factual inaccuracies compared to earlier versions.
• Natural Conversations: Feels more intuitive and fluid in multi-turn interactions.
• File and Image Uploads: Supports advanced workflows by allowing file and image inputs.
• Advanced Creativity and Problem-Solving: Excels in tasks requiring open-ended thinking, coding, and complex problem-solving.

Intended Use:

GPT-4.5 is designed for diverse applications, including:

• Writing assistance (creative and technical).
• Programming support with enhanced debugging and code generation.
• Real-world applications like customer support, education, and content generation.

Language Support:

The model primarily supports English but can accommodate multiple languages depending on user requirements.

Technical Details

Architecture:

GPT-4.5 is based on a transformer architecture with scaled pre-training and post-training enhancements. It incorporates new alignment techniques that improve steerability and nuanced understanding of human input. The model also leverages OpenAI’s Preparedness Framework for safety evaluations.

Training Data:

The model was trained on Microsoft Azure AI supercomputers using scaled unsupervised learning techniques. These methods enhance the model’s ability to recognize patterns, generate creative insights, and reduce hallucinations. Training data likely includes a diverse mix of text from public datasets, though exact sources remain undisclosed.

Diversity and Bias:‍

‍OpenAI has implemented new alignment techniques to address biases in the training data. While no AI model is entirely free from bias, GPT-4.5 demonstrates improvements in fairness and robustness across diverse topics.

Performance Metrics:

Chat GPT 4.5 preview has demonstrated impressive performance metrics:

Usage

Code Samples:

The model is available on the AI/ML API platform as "Chat GPT 4.5 preview" .

API Documentation:

Detailed API Documentation is available here.

Ethical Guidelines

OpenAI has emphasized safety by combining traditional supervised fine-tuning (SFT) with reinforcement learning from human feedback (RLHF). The Preparedness Framework was used to evaluate safety risks before deployment, ensuring alignment with human values while minimizing harmful outputs.

Licensing

GPT-4.5 is accessible for both commercial and non-commercial use under a proprietary license, provided users adhere to OpenAI's terms and guidelines.​

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Get Chat GPT 4.5 preview API here.