Differences between GPT-4, GPT-4 Turbo and GPT-4o

Although OpenAI's GPT-4 models start from the same foundation, they have some significant differences, meaning they are better suited to some tasks than others, not to mention cost. regarding accessing them.

So what is the difference between OpenAI's GPT-4 models?

Compare GPT-4, GPT-4 Turbo and GPT-4o

OpenAI's GPT-4 models include several variants, each designed to meet different needs. Below is an overview of the differences between GPT-4, GPT-4 Turbo and GPT-4o (Omni).

GPT-4

GPT-4 is the foundation model. It understands and produces complex sentences, useful for many applications, such as creative writing, data analysis, language translation, and code generation. With GPT-4's 23,000 - 25,000 word context window, you can also attach multiple long documents and have them answer any queries about your uploaded file. Since this is the base model of this product line, you can also access all the useful features of the GPT -4 on both the GPT-4 Turbo and GPT-4o.

Differences between GPT-4, GPT-4 Turbo and GPT-4o Picture 1

GPT-4 Turbo

GPT-4 Turbo builds on the capabilities of GPT-4 by focusing on efficiency and cost savings. It delivers faster response times thanks to improved computational efficiency, making it suitable for users who need faster outputs. Additionally, GPT-4 Turbo excels in accuracy, especially in mathematical problems, outperforming GPT-4 in many different benchmarks. This model also introduces advanced features such as JSON mode and parallel function calls, which contribute to more robust and reproducible output.

GPT-4o

Differences between GPT-4, GPT-4 Turbo and GPT-4o Picture 2

GPT-4o ("o" stands for "omni") is the latest addition to the GPT-4 model line and is the default model of choice for both ChatGPT Free and Plus users. This model is twice as smart and fast as the GPT-4 Turbo, making it ideal for real-time applications. GPT-4o is also the first multimodal model in this product line, capable of parsing all types of file formats such as text, audio, images and video, and can create all types of text. Text and images in ChatGPT.

Additionally, OpenAI has allowed users to grant limited access to GPT-4o for free, at 16 messages every 3 hours. ChatGPT will then return to using GPT-3.5.

Below are detailed information about each GPT-4 model:

Feature	GPT-4	GPT-4 Turbo	GPT-4o
Price (ChatGPT)	$20	$20	Free (16 messages every 3 hours), $20 (80 messages every 3 hours)
Response speed	Standard	2 times faster than GPT-4	4 times faster than GPT-4
Context window	Up to 32k tokens	Up to 32k tokens	Up to 32k tokens
Multimodal Input/Output	Are not	Are not	Have
MMLU	86.3	86.5	88.7
GPTQA	48.0	35.7	53.6
MATH	42.5	72.6	76.6
HumanEval	67.0	87.1	90.2

In addition to cost, response time, and context interval, the article also added an accuracy benchmark for each model to help compare accuracy across a variety of tasks. Benchmark tests include MMLU to test academic knowledge, GPQA to assess general knowledge, HumanEval to assess a model's coding ability, and MATH to solve mathematical problems. In each test, the higher the score, the better.

Which GPT-4 model should be used?

Choosing the right model depends on your specific needs and the nature of the work you intend to perform.

GPT-4o is the most powerful model in the product line. It has the highest accuracy score in all benchmark tests and will probably perform the best in every interaction. However, the number of messages you can send to GPT-4o is limited, especially for free tier users. This limitation is the main reason why upgrading to ChatGPT Plus is still recommended. However, the use of GPT-4o is best reserved for interactions that require multimodal input and output, or when maximum precision is needed. GPT-4 and GPT-4 Turbo are only available to ChatGPT Plus users. If you already have a Plus account, it makes more sense to use GPT-4 Turbo in all ChatGPT interactions unless you require GPT-4o.

However, GPT-4 Turbo is currently not available in ChatGPT even though it was made available on April 12, 2024. This means you will have to use the GPT-4 model for most tasks and uses. Use GPT-4o for more complex tasks until OpenAI offers GPT-4 Turbo again.

Jessica Tanner

Update 21 June 2024

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