What is ChatGPTJP.com?

ChatGPTJP.com is an information hub site for people who want to use ChatGPT in Japanese. It organizes how to start using it for free, model comparisons, usage examples, guides, and FAQ in Japanese, and you can also try AI chat directly in your browser. It is not OpenAI's official site but an independent information site.

How to use ChatGPTJP.com?

Type your question into the chat box on the top page and try it immediately. After that, if you want to know the scope of free usage, refer to 'ChatGPT Free'; if you want to start without an account, refer to 'Use without registration'; if you want to start with comparisons, refer to 'Model List' or 'Comparison Page'.

Core features of ChatGPTJP.com

AI chat available immediately in your browser
Free to use without registration
Model comparisons (GPT-5, GPT-4.1, GPT-4o, nano, etc.)
Usage examples (email creation, PDF summarization, resumes, study support, etc.)
Practical guides (prompts, privacy, image generation, etc.)
FAQ (pricing, login, safety, outage response)
Privacy-focused (no history stored on the server side)