Due to incredibly high demand, DeepSeek has been having a lot of issues meeting the demand. To checkout the status of the API, https://status.deepseek.com/
DeepSeek, as of October 1, 2025; still has many issues with their API, their documenation, and support of functions. We still do not recommend DeepSeek if you want to build consistently with Cuppa. We do know they have a new model, but it still remains the same.