GPT-4 Technical Report
OpenAI
∗
Abstract
We report the development of GPT-4, a large-scale, multimodal model which can
accept image and text inputs and produce text outputs. While less capable than
humans in many real-world scenarios, GPT-4 exhibits human-level performance
on various professional and academic benchmarks, including passing a simulated
bar exam with a score around the top 10% of test takers. GPT-4 is a Transformer-
based model pre-trained to predict the next token in a document. The post-training
alignment process results in improved performance on measures of factuality and
adherence to desired behavior. A core component of this project was developing
infrastructure and optimization methods that behave predictably across a wide
range of scales. This allowed us to accurately predict some aspects of GPT-4’s
performance based on models trained with no more than 1/1,000th the compute of
GPT-4.
1 Introduction
This technical report presents GPT-4, a large multimodal model capable of processing image and
text inputs and producing text outputs. Such models are an important area of study as they have the
potential to be used in a wide range of applications, such as dialogue systems, text summarization,
and machine translation. As such, they have been the subject of substantial interest and progress in
recent years [1–28].
One of the main goals of developing such models is to improve their ability to understand and generate
natural language text, particularly in more complex and nuanced scenarios. To test its capabilities
in such scenarios, GPT-4 was evaluated on a variety of exams originally designed for humans. In
these evaluations it performs quite well and often outscores the vast majority of human test takers.
For example, on a simulated bar exam, GPT-4 achieves a score that falls in the top 10% of test takers.
This contrasts with GPT-3.5, which scores in the bottom 10%.
On a suite of traditional NLP benchmarks, GPT-4 outperforms both previous large language models
and most state-of-the-art systems (which often have benchmark-specific training or hand-engineering).
On the MMLU benchmark [
29
,
30
], an English-language suite of multiple-choice questions covering
57 subjects, GPT-4 not only outperforms existing models by a considerable margin in English, but
also demonstrates strong performance in other languages. On translated variants of MMLU, GPT-4
surpasses the English-language state-of-the-art in 24 of 26 languages considered. We discuss these
model capability results, as well as model safety improvements and results, in more detail in later
sections.
This report also discusses a key challenge of the project, developing deep learning infrastructure and
optimization methods that behave predictably across a wide range of scales. This allowed us to make
predictions about the expected performance of GPT-4 (based on small runs trained in similar ways)
that were tested against the final run to increase confidence in our training.
Despite its capabilities, GPT-4 has similar limitations to earlier GPT models [
1
,
31
,
32
]: it is not fully
reliable (e.g. can suffer from “hallucinations”), has a limited context window, and does not learn
∗
Please cite this work as “OpenAI (2023)". Full authorship contribution statements appear at the end of the
document.
