DeepSeek V4.1 Flash 1017 with open weights: close to Opus 5.5 at a fraction of the cost

Valenciana @ValencianaAbelOriginally posted 2026.10.18

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DeepSeek V4.1 Flash 1017 isn't quite Opus 5.5 but it's not that far off either It dropped today with open weights and the early word is you get most of the way there for a fraction of the cost One independent bug test reportedly still has Opus ahead, just not by as much as you'd expect When something this cheap gets this close, a lot of everyday coding stops needing a frontier model Opus still wins on the hard stuff, but that gap is getting awkward 👀