Iv’e been using the GPT 5 Mini API for around a month, with an average of 8 million tokens (1000 requests).
With previous models, the cost is clearly shown in the platform usage summary, they were also a higher cost than GPT 5 Mini.
The weird thing is for the past month, the usage costs appear to be zero?
Hasn’t cost me a cent.
It doesn’t appear to be a visual bug in the graph, my credit balance hasn’t decreased either, the API has been running and working flawlessly.
(The graphs showing token use and requests are all correct)
I just want to know what I’m missing?
Is there a free usage tier I’m not aware of?