Olmo-3-7B-Instruct
allenai/Olmo-3-7B-InstructOlmo-3-7B-Instruct at Q4_K_M is exactly 4,471,601,152 bytes (4.16 GiB / 4.47 GB) — an effective 4.902 bits per weight, not the nominal 4. Its KV cache at 32K is 5.69 GiB, not the 16.00 GiB a flat formula predicts.
Shipped quantizations
| Quant | Size● | Exact bytes● | Effective bpw● | Tensors● | Publisher |
|---|---|---|---|---|---|
| UD-IQ1_S | 1.81 GiB | 1,941,747,200 | 2.128 | — | unsloth |
| UD-IQ1_M | 1.90 GiB | 2,042,295,808 | 2.239 | — | unsloth |
| UD-IQ2_XXS | 2.10 GiB | 2,254,091,776 | 2.471 | — | unsloth |
| IQ2_M | 2.49 GiB | 2,676,061,440 | 2.933 | — | bartowski |
| UD-IQ2_M | 2.53 GiB | 2,717,038,080 | 2.978 | — | unsloth |
| Q2_K | 2.66 GiB | 2,857,914,368 | 3.133 | — | bartowski |
| Q2_K | 2.66 GiB | 2,857,914,624 | 3.133 | — | unsloth |
| IQ3_XXS | 2.70 GiB | 2,901,701,888 | 3.181 | — | bartowski |
| UD-IQ3_XXS | 2.74 GiB | 2,944,341,504 | 3.228 | — | unsloth |
| Q2_K_L | 2.75 GiB | 2,954,181,504 | 3.238 | — | unsloth |
| IQ3_XS | 2.93 GiB | 3,149,977,536 | 3.453 | — | bartowski |
| Q2_K_L | 3.04 GiB | 3,259,026,368 | 3.572 | — | bartowski |
| Q3_K_S | 3.08 GiB | 3,301,758,912 | 3.619 | — | bartowski |
| Q3_K_S | 3.08 GiB | 3,301,759,168 | 3.619 | — | unsloth |
| IQ3_M | 3.23 GiB | 3,468,318,656 | 3.802 | — | bartowski |
| Q3_K_M | 3.40 GiB | 3,651,459,008 | 4.003 | — | bartowski |
| Q3_K_M | 3.40 GiB | 3,651,459,264 | 4.003 | — | unsloth |
| Q3_K_L | 3.68 GiB | 3,950,565,312 | 4.331 | — | bartowski |
| IQ4_XS | 3.73 GiB | 4,001,193,856 | 4.386 | — | bartowski |
| IQ4_XS | 3.74 GiB | 4,014,029,696 | 4.400 | — | unsloth |
| IQ4_NL | 3.93 GiB | 4,216,404,608 | 4.622 | — | bartowski |
| IQ4_NL | 3.93 GiB | 4,216,404,864 | 4.622 | — | unsloth |
| Q4_0 | 3.94 GiB | 4,227,676,800 | 4.634 | — | bartowski |
| Q4_0 | 3.94 GiB | 4,227,677,056 | 4.634 | — | unsloth |
| Q4_K_S | 3.96 GiB | 4,247,337,600 | 4.656 | — | bartowski |
| Q4_K_S | 3.96 GiB | 4,247,337,856 | 4.656 | — | unsloth |
| Q4_K_M | 4.16 GiB | 4,471,601,152 | 4.902 | — | lmstudio-community |
| Q4_K_M | 4.16 GiB | 4,471,601,792 | 4.902 | — | bartowski |
| Q4_K_M | 4.16 GiB | 4,471,602,048 | 4.902 | — | unsloth |
| Q4_1 | 4.33 GiB | 4,646,826,112 | 5.094 | — | bartowski |
| Q4_1 | 4.33 GiB | 4,646,826,368 | 5.094 | — | unsloth |
| Q4_K_L | 4.45 GiB | 4,776,446,912 | 5.236 | — | bartowski |
| Q5_K_S | 4.73 GiB | 5,077,247,616 | 5.566 | — | bartowski |
| Q5_K_S | 4.73 GiB | 5,077,247,872 | 5.566 | — | unsloth |
| Q5_K_M | 4.85 GiB | 5,208,712,832 | 5.710 | — | bartowski |
| Q5_K_M | 4.85 GiB | 5,208,713,088 | 5.710 | — | unsloth |
| Q5_K_L | 5.09 GiB | 5,462,215,616 | 5.988 | — | bartowski |
| Q6_K | 5.58 GiB | 5,991,892,672 | 6.568 | — | lmstudio-community |
| Q6_K | 5.58 GiB | 5,991,893,312 | 6.568 | — | bartowski |
| Q6_K | 5.58 GiB | 5,991,893,568 | 6.568 | — | unsloth |
KV cache by context
| Context | KV cache (f16)● | Flat formula | Overstated by | Full / windowed / recurrent |
|---|---|---|---|---|
| 4,096 | 2.00 GiB | 2.00 GiB | — | 8 / 24 / 0 |
| 8,192 | 2.69 GiB | 4.00 GiB | 1.49× | 8 / 24 / 0 |
| 16,384 | 3.69 GiB | 8.00 GiB | 2.17× | 8 / 24 / 0 |
| 32,768 | 5.69 GiB | 16.00 GiB | 2.81× | 8 / 24 / 0 |
| 65,536 | 9.69 GiB | 32.00 GiB | 3.30× | 8 / 24 / 0 |
| 131,072 | 17.69 GiB | 64.00 GiB | 3.62× | 8 / 24 / 0 |
24 of 32 layers cache only a 4,096-token window rather than the full context, on a period of . Figures assume the default configuration; --swa-full disables the saving entirely.
Compare with
Will it run on your card?
Why other calculators give a different number
A parameters × bits ÷ 8 estimate puts Q4_K_M at roughly 3.82 GiB. The real file is 4.16 GiB, because a quantization is a mixture and some tensors are always kept at higher precision. The larger discrepancy is the cache: a flat formula gives 16.00 GiB at 32K context where the real figure is 5.69 GiB, because most of this model's layers cache a fixed window rather than the whole context.
Architecture
Questions people ask
- How much VRAM does Olmo-3-7B-Instruct need?
- Q4_K_M is exactly 4,471,601,152 bytes (4.16 GiB) in weights. Add the KV cache, which depends on your context length, plus roughly half a gigabyte of runtime overhead.
- How large is Olmo-3-7B-Instruct's KV cache?
- 5.69 GiB at 32K context with an f16 cache, computed per layer. Quantizing the cache to q8_0 roughly halves it, which is often the difference between a context length fitting and not.
- Which quantization of Olmo-3-7B-Instruct 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.