Architecture
Retrieved 2026-09-13 at pinned commit 46b719694e3b; parameter count from the safetensors index at the same revision.
- Architecture
- cohere_compass_text
- Layers
- 28
- Hidden size
- 2,048
- Attention heads
- 16
- KV heads
- 8
- Head dimension
- 128
- Feed-forward width
- 6,144
- Vocabulary
- 262,144
- Context ceiling
- 500,000
- Sliding window
- 4,096
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.
This is a multimodal checkpoint (vision); the diagram and memory sizing above cover the text decoder. Encoder/audio/image activations are not included in the KV or weight figures.