Model techniques map
Techniquesmodel architecturenormalization & residual

specific method · filed under model architecture

Single-Pass mHC

An mHC variant that shifts input-mixing coefficients by one block so each block consumes coefficients produced by the previous block.

Also called Single-PassmHC residual-stream mixing, Single-PassmHC.

sources
2
model
1
lab adopt it
1
strongest
core

How sources treat it

One count per evidence span, weakest treatment to strongest.

optional 1used 1core 1

Documented in

Evidence

3 spans quoted from the sources, strongest treatment first.

Single-PassmHC revises residual-stream mixing to enable more efficient kernel fusion

coremodel architecturein DeepSeek-V4.1-FlashDeepSeek

Additional architectural components include Single-Pass mHC (revised residual-stream mixing with an efficient Mega-mHC kernel)

usedmodel architecturein DeepSeek-V4.1-FlashDeepSeek

We therefore introduce Single-Pass mHC, which shifts the input-mixing coefficients by one block, i.e. every block consumes the mixing coefficients produced by the previous one

optionalunclearin DeepSeek-V4.1-FlashDeepSeek

Filed alongside

Other methods under model architecture :: normalization & residual.