Could it be Claude 3.5 instead of Claude 4?

[condor (Condor (Tee))]

1. Claude Web has a system prompt, as you can see.
2. JB AI Assistant has a system prompt, as you can see.

I’ve done this test several times, others have checked it as well with Anthropic Console and you can test it with their API. In about 30% of cases it answers wrong.

Claude 4 is reporting as Claude 3.5

Models are never aware of themselves as the data they are trained on doesn’t mention them - a bit of a catch-22! “Claude 4” is not a concept on the internet when they train the model, so it’s not aware of it’s own existence, and therefore falls back to saying it is Claude 3.5, as that is a model it is aware of from it’s training data. Rules may fix this, but it’s likely not worth adding a rule just to get it to state it’s real name - you are always talking to the model you pick in Cursor!

Claude 4 Sonnet UI Mislabeling or Misrouting to Claude 3.5 Sonnet

I just checked this in the Anthropic console and got these responses. [image] [image]

Strange name of the model Claude Sonnet 4

Its pretty clear from Anthropics own Console what info models have. Any non-API 3rd party tools have system prompts which has impact on responses. [image] [image] I have posted tests of various models in many threads here and will leave it at that, this has been officially addressed by Cursor Team members in several threads as well. If you have clear info there is an issue with any model please create a full Bug Report with a Request ID that has privacy disabled so the Cursor Team can revi…

I will bring it up again internally but this has been reviewed and tested by devs even checking the models responses as well as making sure the correct model is called.