ChatGPT
: How to use it, features, and the business problems it solves
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What is ChatGPT?
ChatGPT is an AI assistant provided by OpenAI, the conversational service at the center of the generative AI boom. Built on the latest GPT-5.6 family, it runs question answering and writing plus Deep Research, image generation, data analysis, voice conversation, and a coding agent (Codex) in a single app. It is expanding into features that hand off tasks, such as projects, scheduled tasks, custom GPTs, and workspace agents. Pricing is free / Go ¥1,400 / Plus ¥3,000 / Pro ¥16,800– (individual, monthly), with Business and Enterprise for organizations.
Business problems it solves
About "ChatGPT"
What is ChatGPT
ChatGPT is an AI assistant provided by OpenAI, the conversational service at the center of the generative AI boom. Built on the latest GPT-5.6 family of models, it handles question answering and writing, and also brings Deep Research (automated research), image generation, data analysis, voice conversation, and a coding agent (Codex) together in a single app. It goes beyond mere chat, expanding into features that "hand off tasks," such as project management, scheduled execution, custom GPTs, and workspace agents.
From "conversation" to "task execution"
ChatGPT's current position is not just answering questions but executing tasks such as research, generation, and implementation. Run automated research with Deep Research, hand off coding to Codex, and automate routine processing with scheduled tasks. With custom GPTs, internal tool integrations, and a built-in browser, you can embed it into your business workflows.
How to use it
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Create an account (free)
Go to chatgpt.com and create an account. You can start using it for free.
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Ask a question or make a request
Enter what you want to look up or create. Attaching images and files and voice input are also supported.
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Research and generate
Create reports with Deep Research, or run image generation and data analysis.
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Hand off tasks
Code with Codex, run things automatically with scheduled tasks, and streamline routine work with custom GPTs.
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Choose a plan
Depending on your usage and the models you need, upgrade to Go / Plus / Pro (individual) or Business / Enterprise (organizations).
Features
01Conversation and reasoning
Handle a wide range of tasks.
- GPT-5.6 family models — Use Sol/Sol Pro/Terra/Luna and more as suited to the task
- Large context — Retains long documents and chats
- Voice and Vision — Voice conversation and image understanding
02Generation and research
Create and research in depth.
- Image generation — High-fidelity image creation (including generation via Thinking)
- Deep Research — Automatically gathers information and turns it into a report
- Data analysis — Analysis and visualization based on files
03Agents and extensions
Hand off tasks and connect to your work.
- Codex — A coding agent
- Projects and scheduled tasks — Ongoing work and automatic execution
- Custom GPTs and app integrations — Purpose-built uses and internal tool connections
Pricing
It is free to use, and higher-tier plans expand your usage, models, and features (amounts shown are monthly prices in Japan, as of August 2026; for individuals).
| Plan | Monthly | What's included |
|---|---|---|
| Free | ¥0 | GPT-5.5 Instant (limited), with caps on messages, images, Deep Research, and Codex |
| Go | ¥1,400 | Expanded GPT-5.5 Instant limits, more messages, images, and memory |
| Plus | ¥3,000 | Advanced reasoning with GPT-5.6, expanded Deep Research, expanded projects, custom GPTs, and Codex |
| Pro | ¥16,800– | 5x/20x usage, GPT-5.6 Sol Pro, maximum Codex, unlimited images, maximum Deep Research |
For organizations, Business and Enterprise are available (from 2 users, with annual plans and admin features).
How it differs from other AI assistants
ChatGPT is chosen for "the breadth of its features and ecosystem, and its expansion into task execution." Like Claude and Gemini, it is a high-performance conversational AI, but its strength is the comprehensiveness of its features, including image generation, Codex, custom GPTs, and app integrations.
| ChatGPT | Claude | Gemini | |
|---|---|---|---|
| Provider | OpenAI | Anthropic | |
| Strengths | Breadth of features, agents, ecosystem | Writing, code, analysis, safety | Google service integration, video generation |
| Free tier | Yes (¥0) | Yes ($0) | Yes (¥0) |
If you're choosing based on the quality of writing, code, and analysis, Claude is a comparison point; for integration with Google services, Gemini is worth comparing.
The information on this page is based on what was published on the official website as of August 2026. Please check the official website for the latest specifications and pricing.
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