Architecture
Retrieved 2026-09-01 at pinned commit 6533e8de2c68; parameter count from the safetensors index at the same revision.
- Architecture
- nemotron_h
- Layers
- 56
- Hidden size
- 4,480
- Attention heads
- 40
- KV heads
- 8
- Head dimension
- 128
- Feed-forward width
- 15,680
- Vocabulary
- 131,072
- Context ceiling
- 131,072
Where the memory goes
Grouped-query attention shares each key/value head across 5 query heads, so the KV cache is 20% of what multi-head attention would need at the same context.