Architecture
Retrieved 2026-09-01 at pinned commit d30938d0efb1; parameter count from the safetensors index at the same revision.
- Architecture
- gemma2
- Layers
- 42
- Hidden size
- 3,584
- Attention heads
- 16
- KV heads
- 8
- Head dimension
- 256
- Feed-forward width
- 14,336
- Vocabulary
- 128,256
- Context ceiling
- 4,096
- Sliding window
- 4,096
- RoPE theta
- 10,000
Where the memory goes
Grouped-query attention shares each key/value head across 2 query heads, so the KV cache is 50% of what multi-head attention would need at the same context.