Significant jump in pricing. V4 Flash was $0.16/M out, 4.1 is $1.20/M.

I think you're comparing to third party prices, deepseek's prices hasn't changed with this release. Also, $1.2 is the peaktime price.

https://api-docs.deepseek.com/quick_start/pricing/

Never saw $0.16 for 1M output tokens - it was $0.28 a month ago, $0.66 off-peak and $1.32 peak last week, now it is reduced a bit to $0.6 and $1.2

incorrect, no idea where you're getting this pricing. Also, output does not matter. its 10% of the cost.