FrontierThe story, in brief
OpenAI GPT-4.5 System Card
OpenAI just dropped GPT-4.5. Here's what changed.
The KeyNews take
Why it matters
OpenAI's latest model release signals the next phase of capability scaling. Leaders need to understand what's new in reasoning, knowledge, and performance to assess competitive positioning and deployment timelines.
The key facts
5 to knowGPT-4.5 announced as research preview
Positioned as largest and most knowledgeable model to date
System card released (safety/capability documentation available)
Released Feb 27, 2025
Research preview status indicates pre-general availability
Go to the source
OpenAI Blogopenai.com
Publisher excerpt: We’re releasing a research preview of OpenAI GPT‑4.5, our largest and most knowledgeable model yet.