OpenAI GPT 4.5 Has BIG Coding Improvement – Claims Scaling Still Works – Expensive

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Mark Chen is the chief research officer at OpenAI and he talks about the debut of GPT 4.5 in a video below. The OpenAI newest largest model is going live today. The full OpenAI GPT 4.5 paper is here.

Also, OpenAI GPT 4.5 is expensive.

Key Innovations –

Scale Improvements

Improves on GPT-4’s computational efficiency by more than 10x

Advanced Unsupervised Learning

Scales unsupervised learning to increase world model accuracy and decrease hallucination rates

New Alignment Techniques

Enables training larger models with data derived from smaller models

Emotional Intelligence

Internal testers report GPT-4.5 is warm, intuitive, and natural in emotional contexts

GPT-4.5 is not a frontier model, but it is OpenAI’s largest LLM, improving on GPT-4’s computational efficiency by more than 10x.

It offers:
— increased world knowledge
— improved writing ability
— refined personality

2-7% lift on 4o at SWE-Bench

Sam Altman –
GPT-4.5 is ready!

good news: it is the first model that feels like talking to a thoughtful person to me. i have had several moments where i’ve sat back in my chair and been astonished at getting actually good advice from an AI.

bad news: it is a giant, expensive model. we really wanted to launch it to plus and pro at the same time, but we’ve been growing a lot and are out of GPUs. we will add tens of thousands of GPUs next week and roll it out to the plus tier then. (hundreds of thousands coming soon, and i’m pretty sure y’all will use every one we can rack up.)

this isn’t how we want to operate, but it’s hard to perfectly predict growth surges that lead to GPU shortages.

a heads up: this isn’t a reasoning model and won’t crush benchmarks. it’s a different kind of intelligence and there’s a magic to it i haven’t felt before. really excited for people to try it!

Chen speaks about what the new model says about the AI scaling wall, how scaling traditional GPT models compares to reasoning models like OpenAI’s o1.

How important EQ is for AI models today, whether product matters more than models, and how OpenAI’s talent bench looks after last year’s departures.

OpenAI is committed to pushing the frontier forward.