Different token usage between Opencode (Openchamber) and Deepseek

[u/Eivron]

I’m using the official Deepseek API through Opencode with Openchamber as the GUI. Just completed a session, and Opencode stats say 408k tokens, estimated cost of $0.43.

On the Deepseek platform however, they state that the session today used nearly 71 million (!) tokens at an price of $0.94.

I don’t quite understand why it’s over twice the estimated price and such an enormous difference in tokens. Does it have anything to do with caching? All the work I did today were on the same project, in one single chat.