I tried Gemini, ChatGPT, and Copilot for a month and my f…

Don’t buy the hype.

I went into this month-long experiment convinced that the differences between Gemini, ChatGPT, and Copilot are minimal at best. After 30 days of moving my entire life, including complex coding marathons to simple grocery lists, into these three ecosystems, I realized how wrong I was. One of these tools became my indispensable second brain, while another felt like a glorified search bar that I eventually stopped opening altogether.

If you are choosing your AI based on last year’s reviews, you are missing the most important shift in the AI space. ChatGPT’s new GPT-5.2 Thinking mode feels less like a chatbot and more like a senior consultant. It doesn’t just give you an answer; it deconstructs the logic. The real magic happened when I threw a messy, 500-line Python script at it that was throwing cryptic errors. While Copilot suggested a quick fix that didn’t work, ChatGPT’s Codex integration actually went through the edge cases, found a logic flaw in my data handling, and rewrote the function to be 30% more efficient.

Its Canvas feature is also quite neat for long-form writing. I threw a complex prompt at ChatGPT to write me an email (check the screenshot above), and it wrote the email exactly the way I wanted. I opened Canvas, made a few minor tweaks, and sent the email in no time. However, I noticed that for simple queries, it’s actually the slowest of the three. It sometimes overthinks simple tasks and gives me a four-paragraph explanation when I just wanted an answer in a single sentence.

While ChatGPT has recently added a Google Drive connector, the integration isn’t as seamless as having the AI natively live inside your email or spreadsheets (more on that in a minute). While Microsoft essentially uses the same OpenAI models that power ChatGPT, it has enough secret sauce to make Copilot feel like a different beast. After a month of testing, I have realized that Copilot isn’t trying to be your creative writing partner; it’s trying to be your digital executive assistant.

Because it’s baked directly into the Windows and Microsoft 365 ecosystem, it has access to work tools that others simply can’t touch. For example, in Google Slides, Gemini still struggles to build complex, multi-slide narratives from scratch. With Copilot, I can give a single prompt like ‘Create a 10-slide presentation based on this subject,’ and it doesn’t just draft text — it picks a theme, structures the outline, generates relevant images for each slide, and lays them out.

In Excel, it’s just as impressive. It can handle data analysis that would usually require an hour of pivot-table fiddling. If your life revolves around spreadsheets and decks, this tool is basically a cheat code. When it comes to usual prompts, it’s neck-and-neck with ChatGPT, which was expected. However, it’s not all seamless. For a tool that claims to live everywhere, there are some frustrating issues.

The OneNote integration still feels half-baked (unlike Gemini in Google Keep). Even more baffling is the lack of native Microsoft To Do integration. I had a situation where a client requested a project update 30 minutes before a meeting while I was still finishing the actual work. I opened a blank PowerPoint, pointed Copilot to my Word document summary, and told it to generate a professional eight-slide status update.

Since Microsoft bundles Copilot with Office plans, you don’t need to pay extra to unlock advanced models. Google finally realized that its biggest advantage isn’t just the AI model — it’s the fact that it already lives inside my email, calendar, and notes. It can seamlessly connect the dots across the Google ecosystem. I was blown away by how it could reach into Gmail to find a specific credit card bill from three months ago.

It can find my notes, tasks, and even a specific detail from a meeting note I wrote in Google Docs. This personal intelligence layer makes it feel less like a chatbot and more like an extension of my own brain. For instance, I can ask Gemini to get my pizza recipe note from Google Keep and create a task list for ingredients in Google Tasks. However, compared to Copilot’s magic trick of generating 10-slide PowerPoint decks in one go, Gemini in Slides still feels beta.

I could only generate one slide at a time, which made building a full presentation tedious. Gemini also did a decent job with my prompts. However, the answers can be unnecessarily long at times. You need to ask Gemini to keep the answers within a specific word limit. Gemini has excellent integration on Android (especially on Pixel devices like my Pixel 8). I can access it just via a simple button press or a gesture on the home screen and fly through my prompts.

After 30 days of pitting these three giants against each other, one thing is clear: the best AI is a moving target. My month-long deep dive proved that while ChatGPT remains the king of creative sparks and Copilot is the ultimate Office companion, Gemini has evolved into something far more integrated than I ever expected. The winner is ultimately the tool that disappears in your workflow, and it entirely depends on the kind of apps you use daily.

As for me, I'm moving to Gemini since I use Google Keep and Tasks almost daily. However, I’m also keeping my Copilot plan just because it has excellent capabilities in PowerPoint and Excel.

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