ChatGPT-3.5 vs ChatGPT 4: Top 6 Differences

ChatGPT-3.5 vs ChatGPT-4

OpenAI’s ChatGPT has been a significant player in the AI-powered chatbot space, with its versions ChatGPT-3.5 and ChatGPT 4 leading the charge. These two versions have transformed our interaction with AI.

However, to fully harness their capabilities, it’s essential to comprehend the distinctions between them. This understanding not only enables us to appreciate the evolution of AI but also helps us to utilise these tools more effectively.

The ability to process and interpret multiple types of data is a significant advancement in AI technology. This capability, known as multimodality, is a key differentiator between the two. Let’s delve deeper into how this feature has evolved.

Unimodal Limitations of ChatGPT-3.5

ChatGPT-3.5, despite its impressive capabilities, was confined to a unimodal understanding. This means it was designed to process and interpret only text inputs. While this allowed for a wide range of text-based applications, it also set a boundary on the chatbot’s interaction capabilities. It could not comprehend or respond to non-textual data, such as images, limiting its utility in a world that increasingly relies on diverse data types.

Multimodal Advancements in ChatGPT 4

ChatGPT 4 breaks through the unimodal barrier with its ability to process both text and image inputs. This multimodal capability, powered by the GPT-4 engine, significantly broadens the chatbot’s potential applications. It can now understand image prompts, opening up new avenues for user interaction. 

Furthermore, it can generate code based on visual inputs, a feature that can revolutionise fields like web development and design. This leap from unimodal to multimodal understanding marks a significant advancement in the evolution of the ChatGPT app.

2. Processing Power

Processing power is a critical factor when it comes to the capabilities of AI models. It determines the complexity of the tasks they can handle and the speed at which they can process information. In the case of ChatGPT, a significant difference exists between the processing power of the two versions.

Processing Power of ChatGPT-3.5

ChatGPT-3.5, while a significant leap forward in AI technology, had its limitations when it came to processing power. It was capable of understanding and generating text based on the input it received, but its ability to solve complex problems was limited. 

For instance, when faced with intricate scientific or mathematical problems, ChatGPT-3.5 could provide guidance or direction, but it often fell short of providing a comprehensive solution. This limitation meant that while it was a useful tool for general conversation and simple queries, it was less effective for more complex tasks and problem-solving.

Enhanced Processing Power of ChatGPT 4

ChatGPT 4, on the other hand, brings a significant upgrade in processing power. This enhanced capability allows it to tackle complex scientific and mathematical problems with ease. Whether it’s solving equations in calculus, geometry, or algebra, ChatGPT 4 can provide accurate solutions. This makes it not just a chatbot, but a powerful computational tool that can assist users in a wide range of tasks. 

For instance, when asked to calculate the trajectory of a projectile under the influence of gravity and incorporating air resistance, ChatGPT 4 can provide the actual solution using the Runge Kutta method. This level of problem-solving capability sets ChatGPT 4 apart and makes it a valuable tool for professionals, students, and anyone needing to solve complex problems.

3. Nuanced Responses

The ability to understand and respond to nuanced language is a critical aspect of human-like conversation. It’s the subtle difference between a chatbot that simply responds to queries and one that truly engages in a conversation. This is where the distinction between the two ChatGPT logins becomes particularly apparent.

Limitations of ChatGPT-3.5 in Understanding Nuances

ChatGPT-3.5, while a significant advancement in AI chatbot technology, had its limitations when it came to understanding the subtleties of human language. While it is often used as an AI writing tool, it often struggles with elements like humour, sarcasm, and other forms of nuanced expression.

Improved Nuanced Understanding in ChatGPT 4

ChatGPT 4, on the other hand, has made significant strides in this area. It has been designed to better understand and respond to nuanced language. Whether it’s a sarcastic remark, a subtle joke, or a complex metaphor, ChatGPT 4 is equipped to handle it. 

This improved understanding allows it to generate more creative and coherent responses, making conversations feel more natural and engaging. It’s not just about answering queries anymore; it’s about participating in a conversation in a way that feels genuinely human. This leap in nuanced understanding is a testament to the advancements in AI technology and the potential it holds for future interactions.

4. Context Window

The context window of a chatbot is a crucial factor that determines its ability to maintain a coherent and meaningful conversation. It refers to the amount of recent conversation history the model can consider while generating a response. A larger context window allows the chatbot to remember more of the conversation, leading to more relevant and contextually accurate responses.

Context Window in ChatGPT-3.5

ChatGPT-3.5, while a significant advancement in AI chatbots, had a context window limited to 3000 words. This means that it could only remember the last 3000 words in a conversation. While this might seem substantial, in lengthy or complex discussions, this limitation could lead to a loss of context. 

As a result, the chatbot might generate responses that seem out of place or irrelevant, leading to a disjointed conversation flow. This limitation was one of the key areas where ChatGPT-3.5 fell short of delivering a truly human-like conversational experience.

Expanded Context Window in ChatGPT 4

ChatGPT 4, on the other hand, has significantly expanded its context window to a staggering 25,000 words. This eightfold increase allows ChatGPT 4 to remember much more of the conversation, even in very lengthy or complex discussions. With this expanded context window, ChatGPT 4 can maintain context over a much longer conversation, leading to more relevant and contextually accurate responses.

This enhancement significantly improves the coherence and relevance of the chatbot’s responses, making the conversation flow more naturally. As a result, users can engage in more meaningful and satisfying interactions with ChatGPT 4, enhancing the overall user experience.

5. Accuracy and Hallucinations

In AI, accuracy is paramount. It’s the cornerstone of trust between humans and AI systems. Alongside accuracy, the ability of an AI system to avoid “hallucinations” – instances where it generates incorrect or nonsensical responses – is equally important.

Accuracy and Hallucinations in ChatGPT-3.5

ChatGPT-3.5, while a significant advancement in AI, had its share of challenges. One of the most notable was its struggle with accuracy and hallucinations. Despite being trained on a vast dataset, it occasionally produced responses that were either incorrect or didn’t make sense in the given context. 

This was particularly noticeable in complex or ambiguous scenarios where the model had to rely heavily on its training data to generate a response. These hallucinations could lead to confusion and misinformation, undermining user trust in the system.

Improved Accuracy and Reduced Hallucinations in ChatGPT 4

ChatGPT 4, on the other hand, has made significant strides in improving accuracy and reducing hallucinations. Trained on over a trillion parameters, it has a much broader base of knowledge to draw from when generating responses. This vast training allows it to better understand the nuances of language and context, leading to more accurate responses. 

Furthermore, OpenAI has implemented measures to reduce the occurrence of hallucinations in ChatGPT 4. As a result, it’s less likely to produce nonsensical or incorrect responses, making it a more reliable and trustworthy tool for users. This improvement in accuracy and reduction in hallucinations is a testament to the advancements in AI technology, bringing us one step closer to truly intelligent and reliable AI systems.

6. Model Scale

The model scale of an AI system is a crucial factor that determines its capabilities. It refers to the size of the model in terms of the number of parameters it has been trained on. A larger model scale typically means a more powerful AI, capable of understanding and generating more complex and nuanced responses. This is basically how ChaGPT works.

Model Scale of ChatGPT-3.5

ChatGPT-3.5, a significant leap in AI technology, was trained on over 175 billion parameters. This vast number allowed it to understand and generate human-like text based on the input it received. However, despite its impressive scale, it had its limitations. It could sometimes produce inaccurate or nonsensical responses, and it struggled with understanding complex or nuanced language patterns.

Larger Model Scale of ChatGPT 4

ChatGPT 4 takes the concept of model scale to a whole new level. It’s trained on over a trillion parameters, a scale that is almost unimaginable. This larger scale allows ChatGPT 4 to understand and generate more complex and nuanced responses. It can handle a wider range of topics, understand subtler language patterns, and produce more accurate and coherent responses. This makes it a more reliable and versatile tool for a wide range of applications.


Comparing the two versions, it’s clear that the latter brings significant advancements to the table. From its multimodal capabilities to its larger model scale, ChatGPT 4 is a more powerful, nuanced, and versatile tool. Understanding these differences is crucial for anyone looking to leverage the power of AI, whether for business applications, academic research, or personal use. As AI technology continues to evolve, we can expect even more impressive capabilities from future versions of ChatGPT.



Jessica is passionate about exploring and sharing the latest advancements, trends, and innovations in the ever-evolving world of technology. With a keen interest in cutting-edge gadgets, software, and digital solutions, she thrives on unravelling complex technical concepts and translating them into accessible and engaging content for readers. Equipped with a deep understanding of the tech industry, Jessica has a finger on the pulse of emerging technologies such as artificial intelligence, blockchain, augmented reality, and the Internet of Things (IoT).