ChatGPT 3.5 vs ChatGPT 4.0 vs ChatGPT-4o: Key Differences to Consider in 2024

ChatGPT 3.5 vs ChatGPT 4.0 vs ChatGPT-4o

OpenAI’s ChatGPT has been a game-changer since its debut in November 2022. Its knack for generating human-like responses, understanding context, and engaging in meaningful conversations has won over both individuals and businesses.

The response has been overwhelmingly positive.

In just five days, ChatGPT reached 1 million users, making it the fastest-growing consumer app ever. By February 2023, it had over 100 million monthly active users.

Remarkably, ChatGPT’s performance has remained consistently strong, showing no signs of slowing down.

One of the key reasons for ChatGPT’s success is its regular updates and improvements, which keep enhancing the user experience.

Users can use the ChatGPT-3.5 version for free, but for those looking for more power and priority access to new features, there’s ChatGPT 4.0, available through the paid subscription.

OpenAI continues to innovate, offering even more advanced features and functionalities. That’s why they’ve introduced their latest flagship model, ChatGPT-4o, which brings significantly faster and improved capabilities in text, voice, and vision.

There’s a lot more to explore about these GPT models. So let’s dive deep into the details and understand the differences between ChatGPT 3.5, ChatGPT 4.0, and ChatGPT-4o from OpenAI.

What is ChatGPT 3.5?

ChatGPT 3.5 is a free version available for anyone to use on OpenAI’s website. Simply sign up, and log in, and you can start exploring the depths of this AI model within seconds.

As its name suggests, it bridges the gap between GPT-3 and GPT-4.

While OpenAI hasn’t been very detailed about what makes GPT-3.5 better than GPT-3, it seems the main goals were to make the model faster and more cost-effective.

Developed to address some of the shortcomings of its predecessor, GPT-3.5 can handle longer prompts and conversations more accurately, with fewer factual errors.

Its increased intelligence and adaptability make it suitable for a wide range of applications.

Users can access ChatGPT 3.5 to fine-tune their data, customize the model for specific use cases, and improve its performance on particular tasks.

What Is ChatGPT 4.0 (Or ChatGPT Plus)?

OpenAI’s GPT-4 is their most advanced language model yet, delivering safer and more effective responses. This cutting-edge multimodal system can process both text and image inputs, producing high-quality text outputs.

The differences between GPT-3 and GPT-4 are substantial.

GPT-4 enhances reliability, creativity, and collaboration, and can handle more complex instructions. This marks a significant improvement over GPT-3, GPT-3.5, and even GPT-3.5 Turbo, which often struggled with logical and reasoning tasks when faced with complex challenges. In short, GPT-4 represents a major leap forward in AI language models, offering greater capabilities and versatility than its predecessors.

What Is ChatGPT-4o?

OpenAI recently launched ChatGPT-4o (“O” stands for “Omni”), their latest AI language model. This version represents a significant advancement in versatility and accessibility. ChatGPT-4o takes a step closer to natural human-computer interaction, accepting any combination of text, audio, image, and video inputs, and generating outputs in any of these formats.

What sets ChatGPT-4o apart is its omnidirectional functionality, which combines voice, text, and visual understanding into a single, unified model. This integration not only doubles its processing speed but also broadens its applicability across various tasks and industries, promising a more streamlined and effective user experience.

GPT 3.5 vs. GPT 4.0 vs. GPT-4o: What Are the Differences?

1. Model Capabilities

ChatGPT 3.5: This version is a text-based AI known for handling language tasks well. It has 175 billion parameters, which sounds like a lot, but it does limit its ability to remember extensive information and understand complex concepts.

ChatGPT 4: Think of GPT-4 as the supercharged version of GPT-3.5. With around a trillion parameters, it can understand more complicated tasks and provide more accurate responses. It’s like giving the model a much bigger brain, making it smarter, faster, and more capable.

ChatGPT-4o: GPT-4o takes it up a notch by combining text, vision, and audio processing into one model. This makes it versatile and powerful, though OpenAI is still exploring its full potential.

2. Problem-Solving Abilities

ChatGPT 3.5: While capable, GPT-3.5 struggles with tasks that require logic, reasoning, or advanced math. It doesn’t perform well on complex tests like the legal Bar or LSATs.

ChatGPT 4: GPT-4 excels in problem-solving, consistently scoring in the 90th percentile on tough exams. It’s great at tasks that need deep thinking and advanced reasoning.

ChatGPT-4o: GPT-4o also shines in problem-solving, offering accurate answers and interactive guidance to enhance users’ problem-solving skills rather than just providing direct solutions.

3. Capabilities to Interpret Input Types

ChatGPT 3.5: Limited to text inputs, GPT-3.5 can’t handle images or other types of content, which restricts its versatility.

ChatGPT 4: GPT-4 can process both text and images, making it more versatile. It can analyze graphs, memes, and other visual content, opening up many new use cases.

GPT-4o: Known as “Omni,” GPT-4o excels in processing text, audio, and visuals in real-time, outperforming previous models in these areas.

4. Context & Behavior

ChatGPT 3.5: Initially, users couldn’t define the model’s tone or behaviour, but updates have allowed for some customization of these aspects.

ChatGPT 4: Users can define tone, style, and behaviour at an API level with system messages, offering more control and customization for diverse applications.

ChatGPT-4o: Similar to GPT-4, GPT-4o allows customization of responses to suit different contexts and behaviors, though the differences in customization options across versions are minimal.

5. Proficiency in Multilingual Capabilities

ChatGPT 3.5: Proficient mainly in English, with limited capabilities in other languages.

ChatGPT 4: Much better at handling multiple languages, with high accuracy in English and proficiency in 25 other languages, including Mandarin, Polish, and Swahili.

ChatGPT-4o: Supports over 50 languages and offers real-time translation. It’s more cost-effective and even better at multilingual tasks than GPT-4 Turbo.

6. Conversational Flow with Context

ChatGPT 3.5: Can retain up to 3,000 words of context, which is decent but may struggle with longer or more complex conversations.

ChatGPT 4: Supports up to 25,000 words of context, making it much better at maintaining longer, coherent conversations and analyzing context effectively.

ChatGPT-4o: With an impressive capacity of 128,000 tokens, GPT-4o can handle much larger amounts of conversational data, enhancing its ability to understand and respond to complex discussions.

7. Response Times

ChatGPT 3.5: Response times vary, with GPT-3.5 generating tokens at about 73 milliseconds each, and GPT-3.5 Turbo at about 34 milliseconds each.

ChatGPT 4: Slightly slower at around 196 milliseconds per token, but it provides higher quality and more contextually rich responses.

ChatGPT-4o: Capable of real-time reasoning across text, audio, and video with an average response time of 320 milliseconds, ensuring high-quality responses.

By understanding these differences, you can better decide which version of ChatGPT suits your needs. Whether it’s the reliable GPT-3.5, the powerful GPT-4, or the cutting-edge GPT-4o, there’s a model designed to meet a range of requirements and preferences.

When to Choose ChatGPT 3.5, ChatGPT 4.0, or ChatGPT-4o?

# When to Opt for ChatGPT 3.5?

ChatGPT 3.5 is a great choice for basic text-based interactions and tasks that require quick response times. If you need a language model for simple conversations or straightforward text tasks, ChatGPT 3.5 fits the bill perfectly. It’s also free, making it an economical solution if you’re working within budget constraints and don’t need advanced features or high-level accuracy.

# When to Opt for ChatGPT 4.0?

If you require a language model with improved accuracy and a deeper understanding, ChatGPT 4.0 is the best option. It excels in tasks that need more comprehension, such as summarizing lengthy texts, generating detailed responses, or engaging in multi-turn conversations. While it costs $20 per month, the enhanced performance and versatility make it worth the investment for applications where precision and depth are crucial.

# When to Opt for ChatGPT-4o (Omni)?

ChatGPT-4o, the latest advancement in the ChatGPT series, offers unparalleled versatility and capabilities similar to ChatGPT Plus, but it’s available for free. It’s ideal for handling diverse inputs, including text, audio, and images, and delivering high-quality responses in real time. 

However, it is only available to limited users, and not all premium features are included in this newly launched free version.


As we wrap up our discussion on the latest and most popular versions of ChatGPT, it’s clear that each version has its unique strengths.

However, the newly launched ChatGPT-4o (Omni) is particularly exciting, offering a range of advanced features even for free users.

That said, ChatGPT-4o isn’t available to everyone yet and does have some limitations compared to ChatGPT 4.0.

So, if you’re a ChatGPT Plus user, you might want to hold onto your subscription for now.

For those with basic needs, upgrading might not be a pressing concern. The current versions of ChatGPT are still very capable of meeting many users’ needs effectively. ChatGPT continues to evolve, and new versions are always on the horizon.

Stay Ahead with KrishaWeb

At KrishaWeb, we’re dedicated to staying at the forefront of AI technology.

Whether you’re a business looking to integrate advanced AI capabilities or just curious about the latest updates in AI, we’re here to help you navigate and leverage these powerful tools.

Feel free to get in touch with us to learn how we can assist you in harnessing the full potential of ChatGPT for your needs.

Let’s stay tuned for more exciting developments together!

Neeta Solanki
Project Manager

A Digital Marketing Project Manager and Lead, excels as a strategist and Digital Marketing expert. With a focus on driving digital initiatives, Delivers targeted results and effective marketing solutions.


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