alt Hacker News> Please go run some numbers.
- DeepSeek serves DeepSeek V4 Pro at 27 tps: https://openrouter.ai/deepseek/deepseek-v4-pro
- At 27 tps per user, a B300 GPUS will give you around 800 tokens per second (serving 30 users): https://developer-blogs.nvidia.com/wp-content/uploads/2026/0...
- That's 800 * 60 * 60 generated tokens per hour, at a cost of $0.87 per 1M tokens, or $2.50 per hour.
- For input and output tokens, the math is a bit more complicated because we have to make assumptions about their ratio. Using the published values from OpenCode, we get another $2.50 for cached tokens (which are almost free for DeepSeek) and another $3.40 for input tokens (which are a lot cheaper to compute than output tokens), which gives us a total of $8.50 per hour per B300 GPU.
- B300 GPUs can be rented for as low as $3.40 per hour, which is less than $8.50, so hosting DeepSeek V4 Pro is profitable.
You could also host it at fewer tps per user to raise the efficiency and therefore the profit even higher.
Even not assuming Blackwell inference the $3.50/hr price is likely close to the marginal cost. The Deepseek R0 model is a little more than a third of the size of V4 and cost around $1/Mtok to serve at scale based on deepseek's blogs last year and Hopper rental prices.