@arafatkatze: People think that Ahmad is glazing Deepseek V4.1 flash as he is "that opensource guy" but after spending 100+ hours dig…

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open-weights deepseek frontier-models benchmarking cost-efficiency llm

Summary

A tech user shares that after 100+ hours of testing, they believe DeepSeek V4.1 Flash performs on par with frontier models while being 13-20x cheaper and fully open weights down to the inference stack.

People think that Ahmad is glazing Deepseek V4.1 flash as he is "that opensource guy" but after spending 100+ hours digging through eval tasks and running closed source tasks through many frontier models I am starting to believe him. I am confident that Deepseek V4.1 flash is often really on par with frontier models and even when its low by 5-8% it still cheaper by 13-20 times compared to frontier closed models. Don't take my word for it, even on cursor bench deepseek V4.1 flash is 13 times cheaper than frontier but the only difference is that its fully open weights all the way to the inference stack. The future of humanity is looking bright to me.
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Cached at: 10/28/26, 03:44 AM

People think that Ahmad is glazing Deepseek V4.1 flash as he is “that opensource guy” but after spending 100+ hours digging through eval tasks and running closed source tasks through many frontier models I am starting to believe him.

I am confident that Deepseek V4.1 flash is often really on par with frontier models and even when its low by 5-8% it still cheaper by 13-20 times compared to frontier closed models.

Don’t take my word for it, even on cursor bench deepseek V4.1 flash is 13 times cheaper than frontier but the only difference is that its fully open weights all the way to the inference stack.

The future of humanity is looking bright to me.

Ahmad (@TheAhmadOsman): Best opensource model right now is DeepSeek v4.1 Flash 1017 and you’d be crazy if you don’t realize how close to the frontier its intelligence level is

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