Service is fully restored, the slow speed issue that occurred approximately 4 hours ago has been resolved. The specific reason is yet to be confirmed.(June 1)


Updated on May 30, 2023
Who made Ruo Yu?
Made by Ding Yu from Tokyo with love ❤️
Is the API interface used by Ruo Yu the official one from OpenAI?
Yes, without a doubt.
Is Ruo Yu using GPT-3 or 4?
Ruo Yu offers both. Free trial users can try out GPT-3.5, while paid users can choose from GPT-3.5 or 4.
Why does Ruo Yu say it is GPT-3 when I ask it?
Just like GPT-4 doesn’t know it’s GPT-4, ChatGPT (GPT-3.5 and 4) also doesn’t know its own name. These models were trained on datasets from 2021.
Does Ruo Yu support continuous dialogue (context)?
Can I ask for a refund?

For GPT-3.5/4 plans, within 7 days of the purchase, a full refund can be applied for without giving a reason. Each person can only get a refund once, and when applying for a refund, the amount of cat food used cannot exceed 10% of the package (for the GPT-4 plan, either GPT-3.5 or GPT-4 cat food usage cannot exceed this number).

To get a refund, send a mail to

The additional cat food cannot be refunded after purchase.
Can I see your development roadmap?
Please check out Backyard.
I have other questions. How can I contact you?
Send an email to