XiaomiMiMo · text · mixture of experts
MiMo-V2.5
XiaomiMiMo/MiMo-V2.5MiMo-V2.5 at Q4_K_M is exactly 188,768,721,984 bytes (175.80 GiB / 188.77 GB) — an effective 4.859 bits per weight, not the nominal 4.
From the file· summed from 5 file(s)From the file· KV per layer
Parameters
311B
total, not active
Architecture
mimo2
48 layers
Context
1,048,576
native (config.json)
License
mit
Shipped quantizations
● exact bytes, summed from published files
| Quant | Size● | Exact bytes● | Effective bpw● | Tensors● | Publisher |
|---|---|---|---|---|---|
| IQ1_S2 shards | 60.09 GiB | 64,517,053,152 | 1.661 | — | bartowski |
| IQ1_M2 shards | 67.01 GiB | 71,949,359,840 | 1.852 | — | bartowski |
| IQ2_XXS3 shards | 77.87 GiB | 83,609,525,088 | 2.152 | — | bartowski |
| IQ2_XXS17 shards | 79.83 GiB | 85,718,024,640 | 2.207 | — | tnhnyzc |
| UD-IQ1_M3 shards | 86.17 GiB | 92,520,742,176 | 2.382 | — | unsloth |
| IQ2_XS3 shards | 86.68 GiB | 93,071,874,912 | 2.396 | — | bartowski |
| IQ2_S3 shards | 88.18 GiB | 94,678,850,368 | 2.437 | — | bartowski |
| UD-IQ2_XXS3 shards | 89.85 GiB | 96,480,165,152 | 2.484 | — | unsloth |
| UD-IQ2_M3 shards | 89.93 GiB | 96,558,284,064 | 2.486 | — | unsloth |
| IQ2_M3 shards | 97.30 GiB | 104,476,744,544 | 2.689 | — | bartowski |
| Q2_K3 shards | 101.46 GiB | 108,937,657,184 | 2.804 | — | bartowski |
| Q2_K_L3 shards | 102.02 GiB | 109,547,961,184 | 2.820 | — | bartowski |
| IQ3_S | 106.20 GiB | 114,030,172,672 | 2.935 | — | tnhnyzc |
| UD-IQ3_S4 shards | 106.98 GiB | 114,864,627,104 | 2.957 | — | unsloth |
| UD-IQ3_XXS4 shards | 117.27 GiB | 125,920,812,448 | 3.241 | — | unsloth |
| IQ3_XXS4 shards | 121.31 GiB | 130,252,848,064 | 3.353 | — | bartowski |
| Q3_K_S4 shards | 125.83 GiB | 135,110,015,968 | 3.478 | — | bartowski |
| UD-Q3_K_M4 shards | 130.41 GiB | 140,031,442,336 | 3.605 | — | unsloth |
| IQ3_XS4 shards | 132.46 GiB | 142,223,555,552 | 3.661 | — | bartowski |
| Q3_K_M4 shards | 132.47 GiB | 142,240,857,056 | 3.662 | — | bartowski |
| Q3_K_L4 shards | 137.77 GiB | 147,932,527,584 | 3.808 | — | bartowski |
| IQ3_M4 shards | 138.15 GiB | 148,339,375,072 | 3.819 | — | bartowski |
| UD-IQ4_XS4 shards | 139.18 GiB | 149,443,820,992 | 3.847 | — | unsloth |
| UD-IQ4_NL5 shards | 142.12 GiB | 152,597,937,696 | 3.928 | — | unsloth |
| IQ4_XS5 shards | 154.32 GiB | 165,699,140,672 | 4.265 | — | bartowski |
| IQ4_NL5 shards | 163.24 GiB | 175,277,063,200 | 4.512 | — | bartowski |
| Q4_05 shards | 163.68 GiB | 175,751,019,552 | 4.524 | — | bartowski |
| Q4_K17 shards | 165.75 GiB | 177,975,935,424 | 4.582 | — | tnhnyzc |
| UD-Q4_K_S5 shards | 166.56 GiB | 178,837,503,520 | 4.604 | — | unsloth |
| Q4_K_S5 shards | 169.41 GiB | 181,902,359,616 | 4.683 | — | bartowski |
| Q4_K_M5 shards | 175.80 GiB | 188,768,721,984 | 4.859 | — | bartowski |
| Q4_K_L5 shards | 176.24 GiB | 189,232,553,024 | 4.871 | — | bartowski |
| UD-Q4_K_M5 shards | 177.81 GiB | 190,917,099,040 | 4.915 | — | unsloth |
| Q4_15 shards | 180.99 GiB | 194,332,245,088 | 5.003 | — | bartowski |
| Q5_K_S6 shards | 199.54 GiB | 214,255,410,368 | 5.515 | — | bartowski |
| UD-Q5_K_S6 shards | 201.45 GiB | 216,301,387,424 | 5.568 | — | unsloth |
| Q5_K_M6 shards | 206.24 GiB | 221,448,486,048 | 5.700 | — | bartowski |
| UD-Q5_K_M6 shards | 214.37 GiB | 230,176,145,024 | 5.925 | — | unsloth |
| Q6_K17 shards | 238.46 GiB | 256,040,321,472 | 6.591 | — | tnhnyzc |
| UD-Q6_K7 shards | 239.34 GiB | 256,986,136,352 | 6.615 | — | unsloth |
KV cache by context
unresolved
This model declares a 128-token sliding window, but we could not establish which layers use it. Its architecture publishes the layout as a per-layer array inside the model file rather than as a period in config.json, and we have not yet ingested that array.
A flat context × layers × heads figure would be substantially too high, so we are not showing one. This is tracked as a known gap rather than filled with a guess.
Compare with
same modality, comparable size
Will it run on your card?
full quant x context sweep
Radeon RX 6500 XT 4GBGeForce RTX 3050 6GBGeForce RTX 5050 8GBGeForce RTX 3080 10GBGeForce RTX 2080 Ti 11GBGeForce RTX 5070 12GBGeForce RTX 5060 Ti 16GBApple M3 Pro 18GBGeForce RTX 3080 Ti 20GBGeForce RTX 5090 D V2 24GBGeForce RTX 5090 D 32GBApple M5 Max 36GBApple M5 Pro 48GBApple M5 Max 64GBApple M3 Ultra 96GBApple M5 Max 128GBApple M2 Ultra 192GBApple M3 Ultra 256GBApple M3 Ultra 512GB
Why other calculators give a different number
A parameters × bits ÷ 8 estimate puts Q4_K_M at roughly 162.81 GiB. The real file is 175.80 GiB, because a quantization is a mixture and some tensors are always kept at higher precision.
Architecture
from config.json
Layers
48
Attention heads
64
KV heads
4
Head dim
192
Hidden size
4096
Vocab
152,576
Sliding window
128
SWA period
—
MLA
no
Experts
256
Experts per token
8
use_sliding_window
—
Questions people ask
- How much VRAM does MiMo-V2.5 need?
- Q4_K_M is exactly 188,768,721,984 bytes (175.80 GiB) in weights. Add the KV cache, which depends on your context length, plus roughly half a gigabyte of runtime overhead.
- Is MiMo-V2.5 a mixture-of-experts model?
- Yes — 256 experts, 8 routed per token. Every expert must be resident, but only the routed ones are read per token, which is why its memory requirement and its speed behave very differently.
- Which quantization of MiMo-V2.5 should I use?
- Q4_K_M is the usual default. Pick the largest quantization that fits your card at the context you actually need — the table above gives exact sizes for every one published.