Model comparison
LFM2.5-Audio-1.5B vs Qwen3-4B
These two publish different quantization sets; the table below has the exact sizes.
From the file· summed bytes, KV per layer
Side by side
| LFM2.5-Audio-1.5B | Qwen3-4B | |
|---|---|---|
| Parameters | 1.5B | 4.0B |
| Architecture | lfm2 | qwen3 |
| Layers | — | 36 |
| Native context | — | 40,960 |
| Mixture of experts | no | no |
| Quantizations published | 6 | 29 |
| Smallest quantization | 0.80 GiB | 1.01 GiB |
| Q4_K_M | — | 2.33 GiB |
| Licence | other | — |
KV cache by context
the term that decides long-context viability
| Context | LFM2.5-Audio-1.5B | Qwen3-4B | Ratio |
|---|---|---|---|
| 4,096 | — | 0.56 GiB | — |
| 8,192 | — | 1.13 GiB | — |
| 16,384 | — | 2.25 GiB | — |
| 32,768 | — | 4.50 GiB | — |
| 65,536 | — | 9.00 GiB | — |
| 131,072 | — | 18.00 GiB | — |