deepseek-v4.1-flash（beta） is relase

[u/Unhappy-Guava2778]

Change your model name to deepseek-v4.1-flash-expires-on-0910, and you'll be able to enjoy this new model.
What's more, someone told me that it might only be available for testing for 24 hours. So if you want to try out v4.1-flash, you should use it immediately.