Architecture
Retrieved 2026-09-13 at pinned commit 457f2e15bf55; parameter count from the safetensors index at the same revision.
- Architecture
- gemma2
- Layers
- 26
- Hidden size
- 2,304
- Attention heads
- 8
- KV heads
- 4
- Head dimension
- 256
- Feed-forward width
- 9,216
- Vocabulary
- 256,000
- Context ceiling
- 8,192
- 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.