Deepseek v4 pricing is genuinely silly, did the math and now i am questioning my entire stack

Hey 👋 Saw the tweet making the rounds about deepseek v4 being 35x cheaper than opus on input and 178x cheaper on cached tokens, and was sure it was hyperbole. Pulled the numbers anyway because i had nothing better to do. V4-Pro input at standard rate is $0.145 per million. Claude Opus 4.7 input is around $5 per million. That is 34x. Round to 35x and the tweet is right. I genuinely thought someone had moved a decimal point. Then there is the 75% promotional discount running through end of May, which takes V4-Pro input to $0.036 per million. Now we are at 138x cheaper than Opus.