Now I cannot use the gemini2.5pro model. I am developing a dialogue program based on GEMINI API, similar to custom gemini, which can add some industry rules. Three hours ago, I could use the model gemini 2.5 pro preview 06-05 normally and complete my work, but now I suddenly cannot reply to my information flow, while gemini 2.5 flash can still reply according to the information flow. I don’t know if you are adjusting the version of the 2.5 pro model, which caused this problem. You can see the two images below. I replaced your latest 2.5 pro model (not 2.5 pro preview) in the development environment and still cannot process it, but three hours ago I could accept the answer content normally.
Hi @user2145,
Welcome to the Forum, Please wait and try your request again as a 500 error usually indicates an unexpected error on Google’s side.
Thank you!
It works fine now. It should be that Google is replacing the 2.5pro model with a new version, which caused some problems. 
Why do 500 errors appear so frequently now? They almost never appeared when I used it before, and the 2.5flash model (with thinking mode turned on) almost never makes mistakes now. However, the response effect of the 2.5flash model is not very good. I built an application based on geminiAPI and I also think that the 2.5pro model is better. However, the problem now is that the model I want to use most frequently reports errors, which makes my experience very bad.