GPT-4.5 Preview
GPT-4.5 Preview is OpenAI's bridge release between GPT-4o and the next generation of frontier models, emphasizing expanded world knowledge and a measurable reduction in hallucination rates. As a preview model, it gives developers early access to capability improvements OpenAI is testing before full productionization.
The model demonstrates stronger factual grounding on knowledge-intensive tasks and improved coherence over long document contexts compared to earlier GPT-4 variants. It fits workflows where accuracy and reliability on open-domain questions is paramount, particularly in knowledge retrieval, summarization, and research assistance.
Key Features
Expanded world knowledge relative to GPT-4o with fewer hallucinations
Improved factual consistency on knowledge-intensive tasks
Strong long-document coherence and summarization
Good performance on open-domain Q&A and research assistance
Preview access to OpenAI capability improvements before general release
Compatible with existing GPT-4-series API integrations
Ideal Use Cases
Knowledge-intensive research assistance and summarization
Enterprise document analysis requiring high factual accuracy
Developer evaluation of next-generation OpenAI capabilities
Medical, legal, or scientific background information retrieval
Long-form writing requiring broad, reliable world knowledge
Example Prompts for GPT-4.5 Preview
Technical Specifications
| Provider | OpenAI |
| Category | Text |
| Modality | Text -> Text |
Frequently Asked Questions
Try GPT-4.5 Preview now
Start using GPT-4.5 Preview instantly — 100 free credits, no credit card required. Access 750+ AI models through one platform.