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---
license: apache-2.0
---
# Foundry-4

Kernel-specialized hybrid LM: 5.02B total / ~0.58B active params.
18 GDN (gated DeltaNet, fla) + 6 RoPE attention layers, 384-expert
sigmoid-routed dropless MoE (top-8, packed Triton segmm), KernelGram
n-gram tables, 4-iteration shared-weight latent ponder loop, JEV-style
judge head.

Trained 2000 steps on a curated kernel-optimization corpus
(CUDA/Triton episodes with measured RESULT/BEST/HISTORY feedback) plus
GPU-verified synthetic optimization ladders (synth4.py).

Code: model4.py / gdn.py / segmm.py in this repo.