Have you ever had the experience of ``I tried making a slide with AI, but it was kind of lame...'' or ``It was full of text so I ended up remaking it with PowerPoint''?

As of March 2026, there are many tools that can create presentation materials using AI, such as ChatGPT, Claude, and Gamma. However, if you choose the wrong tools or give the wrong instructions, you'll end up mass producing slides with just bullet points on a white background.

In this article, we will explain How to use different tools'' and ``Tips for prompts'' with specific steps to help even beginners to AI create good-looking slides.

3 reasons why AI slide creation does not work

First, let's sort out the reasons why you end up with a "subtle finish" when trying to create slides using AI.

Cause 1: Text generation AI is also asking for design

ChatGPT and Claude are AIs that are good at generating sentences. I'm very good at thinking about the "composition" and "content text" of slides, but I'm weak at visual design. When you ask ChatGPT to create a slide, most of the time a slide with just text on a pure white background will appear.

In other words, The biggest failure pattern is to rely on a single AI for both "thinking" and "designing".

Cause 2: Instructions (prompts) are too vague

If you give vague instructions like "Create sales materials," the AI won't know what to emphasize, who to show it to, or how many pages to summarize. As a result, you end up with ``readable slides'' (=bad slides) that are packed with too much information.

Cause 3: Not knowing what the tool is good at

There are many AI tools that can be used to create slides, but each has completely different strengths and weaknesses. In the next section, we compare the characteristics of the main tools.

Characteristics and usage of four major AI tools

As of March 2026, there are the following four main AI tools that can be used to create slides.

ChatGPT (OpenAI): Companion creation partner

Strength: Slide composition ideas, creating text for each slide, organizing the storyline
Weaknesses: Visual design (almost no design)
Price: Also available in free plan. GPT-4o is available with Plus ($20/month)

ChatGPT is most effective in the phase of thinking about what to communicate, in what order, and how. If you use the Canvas function, you can create HTML-based slides while previewing them, but to be honest, it is difficult to achieve a quality that can be used for business as is.

Claude (Anthropic): Strengths are structuring and PowerPoint coordination

Strengths: Organizing points, structuring, editing slides directly with PowerPoint Add-in
Weak: Design quality of Artifacts alone
Price: Free plan available. PowerPoint add-in requires Pro plan ($20/month) or higher

"Claude in PowerPoint" released in February 2026 is a game changer. It works as a PowerPoint add-in that reads the fonts, colors, and layout of existing templates and generates slides thatmaintain brand guidelines. There is also a feature that automatically converts bullet points into diagrams and flowcharts, which generate editable PowerPoint objects rather than images.

Gamma: Easiest including design

Strength: Automatically generate pre-designed slides just by entering text
Weaknesses: Fine layout adjustments, re-editing after exporting in PowerPoint format
Fees: Free 400 credits (approximately 10 lessons). Charges start from $10/month for the Plus plan

Gamma is an AI tool that specializes in slide creation. By simply specifying the theme and content in text, pre-designed presentation materials will appear. It supports Japanese and has a wide variety of templates. If you want slides that look great quickly, Gamma is the best choice.

However, please note that in the free plan, 40 credits are consumed per generation, so you will use them up in about 10 times. Additional credits cannot be purchased (additions can be made by referring a friend).

Genspark: For people who want to create materials that include research

Strength: Gather information through web searches and create slides, fact-based materials
Weak: Applying brand templates
Prices: Free plan gives you 200 credits every day. Pro plan is $19.99/month

Genspark is an AI platform that integrates a search engine and slide creation. If you tell it to ``research this theme and create slides,'' it will automatically generate slides based on information from the web. Also supports export in PPT/PDF format. 200 credits are reset every day, so it is attractive that you can use it continuously even if it is free.

3 recommended combination patterns for different purposes

From here, we will introduce "which tools should be combined and how" for each actual use case.

Pattern 1: Internal reporting/proposal materials (PowerPoint required)

Recommended: ChatGPT or Claude (configuration) → Claude in PowerPoint (finishing)

  1. Create a composition plan by telling ChatGPT or Claude the purpose, target, and three things you want to convey
  2. Open company template in PowerPoint
  3. Start Claude in PowerPoint add-in and generate slides based on the proposed composition
  4. Give individual instructions such as "make this bullet point into a flowchart"

Claude in PowerPoint does not change the design of existing templates, so you can create materials that match your company's format.

Pattern 2: Seminar/study session slides (emphasis on appearance)

Recommended: ChatGPT (composition/manuscript) → Gamma (design)

  1. Explain slide structure and main points of each slide in bullet points with ChatGPT
  2. Paste bullet points in Gamma and generate slides
  3. Adjust theme colors and fonts and complete

Gamma has high design quality, so you can quickly create slides that you won't be embarrassed to show outside your company.

Pattern 3: Investigation report/data summary (from information gathering all at once)

Recommended: Genspark (research + slide generation)

  1. Instructed Genspark to "summarize the market trends of 〇〇 industry in 10 slides"
  2. AI searches the web, collects information, and automatically generates slides
  3. Export in PPT format and fine-tune if necessary

The biggest bottleneck with research materials is that it takes time to collect information. With Genspark, everything from research to slide creation can be completed in one go.

5 tips for giving instructions to AI effectively

No matter which tool you use, the quality of the instructions (prompts) to the AI greatly influences the outcome of your slides. Please keep in mind the following five things.

Tips 1: First tell who you want to show it to

Simply specifying the audience and the situation, such as ``progress report to boss'', ``proposal to business partner'', ``in-house study session'', etc., can greatly change the output of AI.

Example: "Create a slide that explains the benefits of introducing a new system in 5 minutes to executives who are not familiar with IT"

Tips 2: Specify the number of slides

If you do not specify the number of sheets, the AI tends to pack in information. Be specific, such as "8 pages or less" or "10 pages including cover".

Tips 3: Instruct "1 slide, 1 message"

If left unchecked, AI will put too much information on a single slide. If you specify that you only want to convey one thing per page, your slides will look cleaner.

Tips 4: Check the configuration first and then create the contents

Rather than suddenly asking someone to ``make a finished version,'' the golden rule is to first ask for an outline. If you create the content of each slide after you are satisfied with the structure, rework will be drastically reduced.

Tip 5: Add instructions to “convert bullet points to diagrams”

Text-only slides will not be read. With Claude in PowerPoint or Gamma, you just need to give additional instructions such as "turn this bullet point into a process flow" or "turn it into a comparison table" and it will convert it visually.

3 things you should not do

NG1: Use the slides created by AI as is

The slides generated by AI are just a "starting point". Humans should always check the accuracy of numbers, consistency with company rules, and proper nouns. In particular, be careful as AI may include fictitious statistical data in a "plausible" manner.

NG2: Enter confidential information as is

Entering customer information or undisclosed sales data into an external AI service is risky. There is a possibility that the input data will be used for AI learning, so check the data usage terms of each service and set up opt-outs if necessary. ChatGPT can turn off data learning from the settings screen.

NG3: Use the output without converting it to Japanese even though it was output in English

Some tools may default to output in English. Don't forget to enter "Output in Japanese" in the prompt. Gamma will generate it in Japanese if you input it in Japanese, but the template headings may remain in English, so be sure to check that at the end.

FAQ

Is there a tool that can create AI slides completely free of charge?

Gamma allows you to use 400 credits (about 10 slide generation times) for free. Genspark is reset with 200 credits every day, so you can continue using it for free. ChatGPT's free plan also allows you to create composition plans, but it is not possible to directly generate pre-designed slides.

Can Claude in PowerPoint be used for free?

As of March 2026, you must subscribe to Claude's Pro plan ($20/month) or higher to use the Claude in PowerPoint add-in. It was opened to the Pro plan with the February 19, 2026 update, but is not available on the free plan.

Is it okay to use slides created with AI at work?

From a copyright perspective, the use of AI-generated content for business purposes is not legally prohibited as of March 2026. However,the accuracy of numbers and data should always be checked by humans. AI may contain fictitious data, and if you release that information outside the company, there will be trust issues.

Can you create AI slides from your smartphone?

Gamma and Genspark are browser-based, so you can also access them from your smartphone. However, detailed editing work is more efficient on a PC screen. Although it is possible to create a composition proposal using the ChatGPT app, we recommend using a PC browser to generate and edit slides.

References