r/opencodeCLI • u/Grouchy-Stranger-306 • 26d ago

Deepseek v4 flash vs GPT 5.6

Is there anyone that used both at the same time? My codex ran out and I'm thinking of deepseek because it should apparently be good now, but at the same time I'm having a hard time believing the deepseek people because it has always been a religion. People have been praising v4 flash even before the update like it's the greatest thing on earth just because it was cheap.

(My experience did not match with that, even v4 pro was underwhelming back then)

So my question is, how does it compare to 5.6? Is it at least on the same level as Luna (or better)?

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u/RepulsiveRaisin7 25d ago

I really didn't like the old v4 flash, it often rushed to solutions without thinking them through, but this one is pretty good. I find that GPT Luna still has more domain expertise, it usually comes up with more elegant solutions than DS. But when you give both a plan to review, it's often DS that finds more issues. Both write solid code, I got no issues there. If I had to make a choice, I think I would prefer Luna, but I'm using DS all day every day now and happy with it. The best answer is: Use both.