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ChatGPT, Claude, Gemini... If you could only pay for one, which one would it be??

吹上由樹@株式会社Lean Stack

2026年1月8日 13:41

Hello, I am
Yoshiki Fukiage, CEO of Lean Stack Inc..

[Author Profile]

Yoshiki Fukiage, Representative Director, Lean Stack Inc.

April 2021: Joined the Ministry of Economy, Trade and Industry (METI)
July 2023: Resigned from METI
September 2023: Established Lean Stack Inc.

Company Website: https://www.leanstack-buzz.com/

YouTube Channel: DX Dekiru-kun 🔽

Introduction

"ChatGPT, Claude, Gemini. If you could only pay for one, which one would it be?"

To give you the conclusion first, if you are unsure, starting with ChatGPT is the safest bet. It is fast, fuel-efficient, and doesn't take up much space.
It is fast, efficient, and easy to manage.

However, the optimal choice changes significantly depending on your use case.

I believe it is best to divide them: ChatGPT for beginners, Claude for long-form generation and development, and Gemini for business integration.

This article organizes these three AIs from a practical business perspective.
I hope it serves as a roadmap for your AI subscription strategy.

Let's get started.

1. Why do you need to decide on "one paid subscription"?

What is easiest to lose when introducing AI in small and medium-sized enterprises is not money, but focus.
The more tools you add, the more scattered your operations become.

Surprisingly, this is a common occurrence in many companies.

Moreover, all three services share a common "basic set."

Chat / File (PDF/Image) upload
Web search / Deep research (there are performance differences)
Custom AI and Projects (organizing conversations and knowledge)
Features to refine text and code on the spot

That is why the shortcut is to start by paying for the one that is most effective for your work.

Honestly, there is no need to use a variety of tools.

In the first place, all these AIs have progressed to the point where they all pass the grade...

The prices are just a rough guide, but
this is the general idea as of the time this note was written.

ChatGPT: Free / Plus ($20/month) / Pro ($200/month)
Claude: Free / Pro ($20/month) / Max ($100-$200/month)
Gemini: Free (AI Studio, etc.) / AI Pro (approx. 2,900 yen/month) / Ultra (approx. 36,000 yen), etc.

So, how should you choose?
Let's look at where they are best used.

2. Specific use cases for ChatGPT, Claude, and Gemini

1. If you want to experience the 'change' that comes with a paid subscription, choose ChatGPT

ChatGPT gives the impression that the 'improvement' you get when you pay is easy to understand.

In particular, once you can use the mode that thinks carefully before answering, it is easy to feel the difference in quality.

2. For critical decision-making and research, choose ChatGPT

Investment decisions, hiring, price increases, market withdrawal.
For decisions you cannot afford to get wrong, you can rely on ChatGPT.

It is easy to structure and identify 'what to check next.'
Its strength lies in the fact that it is less likely to just agree with you and is more likely to provide counterarguments.

3. For 'consulting on worries' or organizing thoughts, choose Claude

When you are tired, you want 'questions' rather than just logical arguments.
Claude is good at posing these kinds of questions.

It feels like—quietly untangling the knotted threads in your mind.

4. For writing (proposals, internal documents, notes), choose Claude

Even with the same content, the results change based on readability.
Claude gives the impression that it is easier to adjust the tone of phrasing and the flow of paragraphs.

It is most effective for those whose work involves writing.

5. If you want to 'power through' development and writing, use Claude Code

Claude's paid plan gives you access to a powerful coding tool called Claude Code.

Although it has 'Code' in the name, it is also highly effective for organizing designs and assisting with writing.

However, once you start using it heavily, you will start to worry about usage limits.

Considering the Max plan at that point is a realistic approach.

6. If you need 'visuals' for images, slides, and websites, use Gemini

Gemini is truly strong in multimodal capabilities (images, videos, etc.).

Currently, the ability to input video is also a major advantage.

Its image recognition capability is also top-tier.

7. If you want to streamline work with Google integration, use Gemini (including Workspace)

Gmail, Drive, Calendar, and NotebookLM.

The value of Gemini skyrockets for companies that do their work within the Google ecosystem.

Thinking about it this way, considering the existing tools used within your company is the best way to avoid mistakes.

3. Points to note to avoid failure

Note 1: Use comparison articles as a reference, but test it yourself in the end

An AI's strengths and weaknesses change depending on the task.
Testing it on a small scale with your own work is the fastest way.

Note 2: Decide on 'how to input' confidential information first

Anonymization, summarizing before inputting, and permission settings.
If these aren't decided, the team won't be able to use it.

Note 3: Decide beforehand whether you are consulting for 'solutions' or 'self-reflection'

Do you want accurate information for decision-making?
Do you want to organize your thoughts?

Because if the purpose is different, the optimal AI will also change.

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Thank you for reading this far.

I would be very happy if this helped you see more clearly which AI tool you or your company should utilize.

Well then, see you in the next article.