*on one set of private benchmarks

Artificial analysis has them benching similarly on intelligence, but with deepseek 4.1-flash having a decisive victory in time-to-first-output-token and end-to-end-response-time [1].

Combined these make the interactive experience of using deepseek 4.1-flash significantly more enjoyable than haiku IMO.

[1] https://artificialanalysis.ai/models/deepseek-v4-1-flash-101...