Much higher costs after updating to gpt-realtime-mini-2025-12-15

Hi, on the 14.01 the gpt-realtime-mini model has been updated to gpt-realtime-mini-2025-12-15 and I’m seeing much higher costs compared to the previous one. The amount of tokens used is much higher. Has anyone else had this problem? could the updated model really be using so many more tokens then the previous one? the costs have risen about 200-300% which is very surprising. Thinking of downgrading to version gpt-realtime-mini-2025-10-16