ChatGPT vs. Microsoft Copilot vs. Gemini: Which is the best AI chatbot?

Maria Diaz/ZDNET

Artificial intelligence (AI) has transformed how we work and play in recent months, giving almost anyone the ability to write code, create art, and even make investments. 

For professional and hobbyist users alike, generative AI tools, such as ChatGPT, offer advanced capabilities to create decent-quality content from a simple prompt given by the user. 

Keeping up with all the latest AI tools can get confusing, especially as Microsoft added GPT-4 to Bing and renamed it to Copilot, OpenAI added new capabilities to ChatGPT, and Bard got plugged into the Google ecosystem and rebranded to Gemini.

Also: Microsoft Copilot Pro vs. OpenAI’s ChatGPT Plus: Which is worth your $20 a month?

Knowing which of the three most popular AI chatbots is best to write code, generate text, or help build resumes is challenging, so we’ll break down the biggest differences so you can choose one that fits your needs. 

Testing ChatGPT vs. Microsoft Copilot vs. Gemini

To help determine which AI chatbot gives more accurate answers, I’m going to use a simple prompt to compare the three: 

“I have 5 oranges today, I ate 3 oranges last week. How many oranges do I have left?”

The answer should be five, as the number of oranges I ate last week doesn’t affect the number of oranges I have today, which is what we’re asking the three bots. First up, ChatGPT.

You should use ChatGPT if…

Maria Diaz/ZDNET

1. You want to try the most popular AI chatbot

ChatGPT was created by OpenAI and released for a widespread preview in November 2022. Since then, the AI chatbot quickly gained over 100 million users, with the website alone seeing 1.8 billion visitors a month. It’s been at the center of controversies, especially as people uncover its potential to do schoolwork and replace some workers.

The free version of ChatGPT, which runs on the default GPT-3.5 model, gave the wrong answer to our question.

Maria Diaz/ZDNET

I’ve been testing ChatGPT almost daily since its release. Its user interface has remained simple, but minor changes have improved it greatly, like the addition of a copy button, an edit option, Custom Instructions, and easy access to your account. 

Also: How to use ChatGPT

Though ChatGPT has proven itself as a valuable AI tool, it can be prone to misinformation. Like other large language models (LLMs), GPT-3.5 is imperfect, as it is trained on human-created data up to January 2022. It also often fails to comprehend nuances, like it did with our math question example, which it answered incorrectly by saying we have two oranges left when it should be five. 

2. You’re willing to pay extra for an upgrade

OpenAI lets users access ChatGPT — powered by the GPT-3.5 model — for free with a registered account. But if you’re willing to pay for the Plus version, you can access GPT-4 and many more features for $20 per month.

Also: How to write better ChatGPT prompts for the best generative AI results

GPT-4 is the largest LLM available for use when compared to all other AI chatbots and is trained with data up to April 2023 and can also access the internet, powered by Microsoft Bing. GPT-4 is said to have over 100 trillion parameters; GPT-3.5 has 175 billion parameters. More parameters essentially mean that the model is trained on more data, which makes it more likely to answer questions accurately and less prone to hallucinations.

ChatGPT Plus, which runs using the GPT-4 model, did answer the question correctly. 

Maria Diaz/ZDNET

As an example, you can see the GPT-4 model, available through a ChatGPT Plus subscription, answered the math question correctly, as it understood the full context of the problem from beginning to end.

Also: I tried Microsoft Copilot’s new AI image-generating feature, and it solves a real problem

Next up, let’s consider Microsoft Copilot (formerly Bing chat), which is a great way to access GPT-4 for free, as it’s integrated into its new Bing format. 

You should use Microsoft Copilot if…

Maria Diaz/ZDNET

1. You want more up-to-date information

In contrast to the free version of ChatGPT, which is limited to being an AI tool that generates text in a conversational style with information leading up to early 2022, Copilot can access the internet to deliver more current information, complete with links for sources. 

Also: How to use Copilot (formerly called Bing Chat)

There are other benefits, too. Copilot is powered by GPT-4, OpenAI’s LLM, and it’s completely free to use. Unfortunately, you are limited to five responses on a single conversation, and can only enter up to 2,000 characters in each prompt. 

Copilot’s Precise conversation style answered the question accurately, though other styles fumbled.

Maria Diaz/ZDNET

Copilot’s user interface isn’t as straightforward as that of ChatGPT, but it’s easy to navigate. Though Bing Chat can access the internet to give you more up-to-date results compared to ChatGPT, I’ve found it is more prone to stall at replying and altogether miss prompts than its competitor. 

2. You prefer more visual features

Through a series of upgrades to its platform, Microsoft added visual features to Copilot, formerly Bing Chat. At this point, you can ask Copilot questions like, ‘What is a Tasmanian devil?’ and get an information card in response, complete with photos, lifespan, diet, and more for a more scannable result that is easier to digest than a wall of text. 

All about the Tasmanian devil on Microsoft Copilot.

Maria Diaz/ZDNET

When you use Copilot, you can also ask it to create an image for you. Give Copilot the description of what you want the image to look like, and have the chatbot generate four images for you to choose from. 

Also: How to use Image Creator from Microsoft Designer (formerly Bing Image Creator)

Microsoft Copilot also features different conversational styles when you interact with the chatbot, including Creative, Balanced, and Precise, which alter how light or straightforward the interactions are. 

Both the Balanced and Creative conversation styles in Microsoft Copilot answered my question inaccurately.

Maria Diaz/ZDNET

Finally, let’s turn to Google’s Gemini, formerly known as Bard, which uses a different LLM and has received some considerable upgrades in the past few months.

You should use Gemini if…

Maria Diaz/ZDNET

1. You want a fast, almost unlimited experience

In my time testing different AI chatbots, I saw Google Bard catch a lot of flack for different shortcomings. While I’m not going to say they’re unjustified, I will say that Google’s AI chatbot, now named Gemini, has improved greatly, inside and out.

Also: How to use Gemini (formerly Google Bard): Everything you should know

Gemini is speedy with its answers, which have gotten more accurate over time. It’s not faster than ChatGPT Plus, but it can be faster at giving responses than Copilot at times and faster than the free GPT-3.5 version of ChatGPT, though your mileage may vary. 

Gemini answered accurately, like GPT-4 and Copilot’s Precise conversation style.

Maria Diaz/ZDNET

The previous Bard used to make the same mistake as other bots on my example math problem, by incorrectly using the 5 – 3 = 2 formula, but Gemini, powered by Google’s new Gemini Pro, the company’s largest and latest LLM. Now, Gemini answers the question accurately.

Also: Apple’s new AI model edits photos according to text prompts from users

Gemini is also not limited to a set amount of responses like Microsoft Copilot is. You can have long conversations with Google’s Gemini, but Bing is limited to 30 replies in one conversation. Even ChatGPT Plus limits users to 40 messages every three hours. 

2. You want the full Google experience

Screenshot by Maria Diaz/ZDNET

Google also incorporated more visual elements into its Gemini platform than those currently available on Copilot. Users can also use Gemini to generate images, can upload photos through an integration with Google Lens, and enjoy Kayak, OpenTable, Instacart, and Wolfram Alpha plugins.

Also: 6 AI tools to supercharge your work and everyday life

But Gemini is slowly becoming a full Google experience thanks to Extensions folding the wide range of Google applications into Gemini. Gemini users can add extensions for Google Workspace, YouTube, Google Maps, Google Flights, and Google Hotels, giving them a more personalized and extensive experience.

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