What is generative AI? Thorough introduction of benefits, usage methods, and main tools

Table of contents of this article

  1. What is generative AI?
  2. Benefits of generative AI
  3. Procedures for using generative AI
  4. Free and paid tools that can use generation AI
  5. Impact on future DX promotion and business through generative AI
  6. Skills to use generative AI are required in the DX era

Are you someone who hears a lot of news and information about ChatGPT and generative AI, but don’t really know what it can do, or want to try it out but are at a loss as to where to start? According to a report by the Ministry of Economy, Trade and Industry , the use of generative AI will continue to expand in the future, accelerating digitalization, improving productivity, and mentioning that it has the potential to help solve various social issues. . Skills for utilizing generative AI will become essential in the future.

This article provides a thorough explanation of generative AI, focusing on the following topics:

  • What is generative AI?
  • Benefits of generative AI
  • How to use generative AI
  • Free and paid tools that can use generation AI

Please refer to it if you want to deepen your understanding of generative AI.

What is generative AI?

What exactly is generative AI? We will explain in detail the definition, mechanism, differences from conventional AI, and types of generative AI.

Meaning and mechanism of generative AI

Generative AI is a type of artificial intelligence and refers to an AI system that has the ability to generate new information and content from data. Generative AI can automatically generate data such as text, images, audio, and video, and many of the products are as creative as if they were created by a human.

How it works is by using machine learning and deep learning approaches to learn patterns and rules from large amounts of data, and then generate new content based on that.

What is traditional AI?

In contrast to generative AI, which is currently becoming mainstream, the conventional main type of AI is identification AI. Generative AI focuses on generating new data, learning from existing data and generating new data.

Identification AI, on the other hand, focuses on the task of classifying given data and associating it with specific labels or categories. For example, it is good at tasks such as determining whether an image is a dog or a cat.

The two take different algorithmic approaches, with generative AI being better suited for creative tasks, while discriminative AI is better at classification and prediction tasks.

Five types of generative AI

Generative AI can generate information and content in various media formats. We will introduce the main ways to use the following five methods.

  1. Sentence generation
  2. Image generation
  3. Video generation
  4. Data completion
  5. 3D model generation

・Sentence generation

You can summarize and translate texts, change the style of texts, write novels, generate poems, generate news articles, and more.

・Image generation

You can automatically generate illustrations, compose landscapes, repair photos, change facial expressions, convert styles, etc.

・Video generation

Automatically generate animations, add special effects to your movies, repair frames, change the style of your footage, and more.

・Data completion

It can complement missing data or missing information, such as missing data prediction, image restoration, and audio denoising.

・3D model generation

You can generate objects, buildings, characters, 3D printing models, etc.

Benefits of generative AI

Companies can benefit from a variety of benefits by using generative AI. For example, in marketing and content creation, generative AI can be used to quickly generate high-quality content. In today’s business environment, where it is necessary to create and disseminate a variety of content on a daily basis, such as advertisements, blog articles, and SNS posts, making good use of generative AI can greatly save time and effort, making work more efficient. You can.

Generative AI also has the ability to suggest new ideas and designs. This will encourage the development of new products and services, encourage innovation within the industry and, in turn, stimulate more creativity among employees.

Furthermore, by utilizing generative AI to provide customized content and suggestions, it may be possible to provide information and services that match customers’ needs and preferences. This will also improve the customer experience.

Procedures for using generative AI

Although detailed usage methods differ depending on the tools and products used, we will introduce the basic flow of using generative AI.

1. Decide what you want to generate.

First, decide what kind of content you want to generate, such as text, images, videos, and audio.

2. Choose a tool

Choose the appropriate tool depending on what you want to generate. For example, there is “ChatGPT” for text generation, and “Stable Diffusion” for image generation. Please refer to the following chapters, which introduce recommended tools for each type of product.

3. Input data and generate

Generate content and information by entering data such as instructions called prompts. It is not always possible to create an ideal result by entering data once. In that case, experiment with the data input to get the desired product. By doing so, the AI ​​will be trained to produce better results.

Free and paid tools that can use generation AI

From here, we will introduce tools that can actually use generative AI. We have selected recommended tools that can generate highly versatile texts, images/illustrations, videos, and audio in various business and other situations. Most of them are free to use, so please try them out and use them for your business.

Automatic generation tool for recommended sentences

Two tools that automatically generate text and sentences are introduced in detail below. You can use it for writing email replies, writing articles for blogs and SNS, translating, writing novels and poems, etc.

ChatGPT [Free]


  • Available for free. There is also a paid version.

ChatGPT is an interactive AI tool based on the natural language processing model “GPT” (Generative Pre-trained Transformer). By inputting and interacting with instructions, you can perform a variety of tasks such as providing information, answering questions, generating content, summarizing text, and translating text.

ChatGPT tends to be good when it comes to general information and general topics, but it’s based on information up to September 2021, so it won’t give you the right answers when it comes to real-time information. If you want the most up-to-date source of information, it’s important to check it yourself. Also, the answers given may not always be correct, so don’t just copy the generated sentences as they are, and be sure to check them with human eyes.

Bard [Free]


  • free

Bard is a language generation AI tool developed based on LaMDA (Language Model for Dialogue Applications). Generate desired sentences and texts by inputting instructions. It is similar to ChatGPT, but ChatGPT is better at generating creative sentences, while Bard is better at answering fact-based questions.

Bard can access and process real-time information through Google search, so it can provide answers based on the latest information. However, the answers given are not necessarily correct, so be sure to check them after generation.

Automatic generation tool for recommended images and illustrations

Below we will introduce two tools that automatically generate images and illustrations in detail. It can be used to generate works of art, create new characters and worlds that don’t exist in reality for entertainment, and design products.

Stable Diffusion [Free]

Stable Diffusion

  • free

Stable Diffusion is a tool that generates images from text. By using a technology called the latent diffusion model, it is possible to generate stable, high-quality images with less noise. A wide variety of image generation is possible, from realistic images to imaginary images.

Although the generated images are original, they may be similar to copyrighted images, so be careful not to infringe on copyright.

Midjourney [Paid]


  • Paid

Midjourney is an AI service that can generate images by entering text on a chat app called Discord. The generated images can also be shared in volumes on the Discord chat channel.

It uses a technology called GAN (Generative Adversarial Network). Compared to Stable Diffusion, it is suitable for generating more artistic and original images.

Recommended video automatic generation tools

Two tools that automatically generate videos are explained in detail below. You can use it to create reels, short videos, videos for social media, videos for business and marketing, videos for entertainment, etc.

FlexClip [Free]


  • Available for free. There is also a paid version.

FlexClip is a service that allows you to edit videos on your browser. It’s easy to use and has a wide variety of materials, so even beginners can create videos like a pro.

In addition to the normal video editing functions, there is a function called “AI text to video”. By entering text instructions, it is possible to automatically select photos and videos and generate videos.

Some of the materials used include copyrighted materials. When using copyrighted material, be sure to obtain permission from the copyright holder.

Fliki [Free]


  • Available for free. There is also a paid version.

Fliki is an AI service that can generate images and videos from text. Another feature is that it has a rich stock of media libraries such as images and BGM. Voice audio can also be created using AI, and very natural voices can be generated. It is also possible to automatically generate captions. It is also recommended for creating short videos, Instagram reels, and stories.

With the free version, you can only create videos of up to 5 minutes a month, so if you want to create long videos or multiple videos, you may want to use the paid version.

Recommended automatic voice generation tools

Two tools that automatically generate audio are explained in detail below. It can be used for narration in videos introducing products and services, for audio content such as podcasts and radio programs, and for responses from voice assistants and chatbots.

CoeFont STUDIO [Free]


  • Available for free. There is also a paid version.

CoeFont STUDIO is a service that allows you to input text and generate audio with the voice of a celebrity, anime character, announcer, etc. You can choose from a total of over 5,000 different voices of different ages and genders according to the scene you want to use. Languages ​​available are English and Chinese.

The free version has limitations on the types of voices, so if you want to make full use of it, you should choose the paid version. We also provide a service that allows you to record your own voice and use it as an AI voice.

Text-to-Speech [Free]


  • It is available for free, and there is also a paid version.

Text-to-Speech is a cloud-based service that converts text to speech. Simply enter text to generate natural-sounding audio. Over 380 voice choices in over 50 languages. It is possible to generate natural human-like speech such as intonation.

You can also control the pitch, speed, and volume of your voice. We also offer a service to create original voices that are more natural and match your company’s image. Prices vary depending on the number of characters synthesized.

Impact on future DX promotion and business through generative AI

New generative AI tools, including ChatGPT, are appearing one after another, and many people may be confused by the amount of information that comes in about how to use them. You may be tempted to shy away from it because it seems complicated, but skills to utilize generative AI will become more and more in demand in the future.

According to the Ministry of Economy, Trade and Industry’s “ Thoughts on human resources and skills needed to promote DX in the era of generative AI ,” generative AI technology is expected to continue to advance rapidly. The report states, “Generative AI technology is expected to unlock major business opportunities through improvements in Japan’s productivity and added value, and is also expected to lead to the possibility of contributing to solving various social issues.” .

Furthermore, from a corporate perspective, it is mentioned that “the use of generative AI is expected to support the promotion of DX”, so the ability to fully utilize generative AI to promote DX and improve competitiveness of companies is important. is one of the most important skills to know.

Skills to use generative AI are required in the DX era

We have explained about generation AI that can instantly create various sentences, images, videos, etc. just by inputting text etc. If you have heard of ChatGPT but have not used it yet, why not take this opportunity to try it out?

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