Model comparison
Apertus-8B-Instruct-2509 vs Qwen3-4B
At Q4_K_M, Qwen3-4B is the smaller download — 2,497,280,256 bytes against 5,057,885,440.
From the file· summed bytes, KV per layer
Side by side
| Apertus-8B-Instruct-2509 | Qwen3-4B | |
|---|---|---|
| Parameters | 8.1B | 4.0B |
| Architecture | apertus | qwen3 |
| Layers | 32 | 36 |
| Native context | 65,536 | 40,960 |
| Mixture of experts | no | no |
| Quantizations published | 67 | 29 |
| Smallest quantization | 1.91 GiB | 1.01 GiB |
| Q4_K_M | 4.71 GiB | 2.33 GiB |
| Licence | apache-2.0 | — |
KV cache by context
the term that decides long-context viability
| Context | Apertus-8B-Instruct-2509 | Qwen3-4B | Ratio |
|---|---|---|---|
| 4,096 | 0.50 GiB | 0.56 GiB | 1.13× |
| 8,192 | 1.00 GiB | 1.13 GiB | 1.13× |
| 16,384 | 2.00 GiB | 2.25 GiB | 1.13× |
| 32,768 | 4.00 GiB | 4.50 GiB | 1.13× |
| 65,536 | 8.00 GiB | 9.00 GiB | 1.13× |
| 131,072 | 16.00 GiB | 18.00 GiB | 1.13× |