DeepSeek V4.1 Flash lands in Cursor's model picker at $0.60 to $0.98 per CursorBench task
Added Oct 26 with no BYOK proxy needed, the open-weight 1M-context model turns on under Cursor Settings > Models, and Cursor says all four effort tiers (44.9% to 47.7% on CursorBench 4.0) sit on its cost frontier. It still trails Opus 5.5 Max's 57.8%, and as a third-party model it bills outside your plan's included usage.