DeepSeek debuts DeepSeek-V4.1-Flash, its smallest model built on a new Causal Encoder-Decoder architecture, with 552B backbone parameters and 1M-token context
THE SO WHAT
A “smallest” model with a 552B backbone and 1M-token context underscores how aggressively context windows and parameter counts are being traded against latency and cost. If you’re building long-context workflows, the architecture choice—like Causal Encoder-Decoder—now matters as much as raw size for both UX and unit economics.
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