TheDrummer
Orion-26B-A4B-v1
- Parameters
- 25.2B
- Max context length
- 262,144
- Architecture
- gemma4
- Base model
- TheDrummer/Orion-26B-A4B-v1
- llama.cpp
- b8637+
About Orion-26B-A4B-v1
Orion-26B-A4B-v1 is a GGUF model based on TheDrummer/Orion-26B-A4B-v1 on Hugging Face. GGUF files are published by bartowski/TheDrummer_Orion-26B-A4B-v1-GGUF. It has about 25.2B parameters, the gemma4 architecture, a maximum context length of 262,144 tokens (values written in the GGUF).
There are 26 quantizations, with file sizes from 10.1 GB (IQ2_XS) to 50.5 GB (BF16) (actual sizes on Hugging Face).
Running Q4_K_M (17.0 GB) with an 8,192-token context needs an estimated 18.6 GB of memory, and an estimated 19.1 GB at 32,768 tokens. For 8,192 tokens, a GPU with 24 GB or more of VRAM (such as GeForce RTX 3090 Ti, GeForce RTX 4090), or a Mac with 24 GB or more of unified memory, is a rough guide (macOS caps how much memory the GPU can use, so leave some headroom). The smallest, IQ2_XS (10.1 GB), needs an estimated 11.7 GB at 8,192 tokens.
File size and estimated memory per quantization
- Up to 8 GB
- Up to 16 GB
- Up to 24 GB
- Up to 48 GB
- Up to 128 GB
- More
File sizes are the actual values on Hugging Face. Memory is estimated for each context length (KV cache f16). The formula is in How memory is calculated.
All memory figures are Estimated (KV cache f16). It should run on a setup with at least this much VRAM (or Mac unified memory). Click a value to see the devices and models that fit that amount (Find by GPU / Mac).
Using image input: This model supports image input. To use images, an mmproj file is loaded as well.
About the "quality guide" (how far a quantization drifts from the original)
For each quantization type, how far the output drifts from the original model, grouped into six levels from values llama.cpp measured on Llama-3-8B.
The value is mean KLD (the difference between the original and quantized model in next-token probabilities); smaller means closer to the original. Quantizations made with an imatrix (importance data) come out slightly smaller. Levels use the value without an imatrix (or with one, for types that only have that).
These values were not measured on this model. Larger models and MoE models tend to drift less with the same type. Distributor-specific mixed types (such as UD-Q4_K_XL) cannot be matched by type name alone, so they show "-".
| Quantization | Quality guide | KLD (no imatrix) | KLD (imatrix) | Size (Llama-3-8B) |
|---|---|---|---|---|
| Q8_0 | Nearly identical | 0.0014 | - | 7.96 GiB |
| Q6_K | Very small | 0.0055 | - | 6.14 GiB |
| Q5_K_M | Very small | 0.0108 | - | 5.33 GiB |
| Q5_K_S | Small | 0.0166 | - | 5.21 GiB |
| Q5_1 | Small | 0.0180 | - | 5.65 GiB |
| Q5_0 | Small | 0.0222 | - | 5.21 GiB |
| Q4_K_M | Small | 0.0313 | 0.0282 | 4.58 GiB |
| Q4_K_S | Medium | 0.0431 | 0.0320 | 4.37 GiB |
| IQ4_NL | Small | - | 0.0357 | 4.35 GiB |
| IQ4_XS | Small | - | 0.0363 | 4.14 GiB |
| Q4_1 | Medium | 0.0717 | - | 4.78 GiB |
| Q4_0 | Medium | 0.0719 | - | 4.34 GiB |
| Q3_K_L | Medium | 0.0872 | 0.0731 | 4.03 GiB |
| Q3_K_M | Medium | 0.1019 | 0.0844 | 3.74 GiB |
| IQ3_M | Medium | - | 0.1025 | 3.53 GiB |
| IQ3_S | Medium | - | 0.1113 | 3.42 GiB |
| IQ3_XS | Large | - | 0.1387 | 3.28 GiB |
| IQ3_XXS | Large | - | 0.1836 | 3.05 GiB |
| Q3_K_S | Large | 0.2282 | 0.1998 | 3.41 GiB |
| IQ2_M | Large | - | 0.3260 | 2.74 GiB |
| Q2_K | Very large | 0.4451 | 0.3322 | 2.96 GiB |
| Q2_K_S | Very large | - | 0.4034 | 2.96 GiB |
| IQ2_S | Very large | - | 0.4392 | 2.56 GiB |
| IQ2_XS | Very large | - | 0.5463 | 2.43 GiB |
| IQ2_XXS | Very large | - | 0.8120 | 2.24 GiB |
| IQ1_M | Very large | - | 1.3931 | 2.01 GiB |
| IQ1_S | Very large | - | 2.2546 | 1.88 GiB |
Source: llama.cpp (MIT), measured on Llama-3-8B against FP16, Wikitext-2, revision f364eb6f. Original table · Reading and choosing quantizations
GGUF source
bartowski/TheDrummer_Orion-26B-A4B-v1-GGUF
Converted and published by a third party About this label
Last checked: Sep 29, 2026
- Architecture
- gemma4
- llama.cpp b8637 and later
- Parameters
- 25.2B
- Max context length
- 262,144
The mmproj file for image input (F16) is 1.19 GB Measured . It is not included in the memory above, so add it if you use images.
Ollama ollama run hf.co/bartowski/TheDrummer_Orion-26B-A4B-v1-GGUF:Q4_K_M
llama.cpp llama-server -hf bartowski/TheDrummer_Orion-26B-A4B-v1-GGUF:Q4_K_M
How to run
Mainline llama.cpp can load this model's format (gemma4) from b8637 (Apr 2, 2026) onward. Ollama and LM Studio bundle llama.cpp internally, so an older app fails to load it with errors such as "unknown model architecture". If that happens, update the app.
Example commands using Q4_K_M. To use another quantization, replace the name with one from the table above. How to run local LLMs
Ollama
Run it by pointing directly at the GGUF on Hugging Face.
ollama run hf.co/bartowski/TheDrummer_Orion-26B-A4B-v1-GGUF:Q4_K_M
llama.cpp
Pass the repository and quantization name to llama-server (or llama-cli) with -hf.
llama-server -hf bartowski/TheDrummer_Orion-26B-A4B-v1-GGUF:Q4_K_M
LM Studio
Paste bartowski/TheDrummer_Orion-26B-A4B-v1-GGUF into the search box, download it, and choose the quantization from the file list.
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Frequently asked questions
- How much memory do I need to run Orion-26B-A4B-v1 (Q4_K_M)?
- The file size is 17.0 GB (measured). With a 8,192-token context, the estimated memory including the KV cache is 18.6 GB. The formula is published at https://localllm.az-arte.com/en/guide/memory-calculation.
- Does Orion-26B-A4B-v1 run in 8 GB, 12 GB, 16 GB or 24 GB of VRAM?
- 8 GB: no quantization fits; 12 GB: up to Q2_K_L (est. 12.7 GB); 16 GB: up to Q4_0 (est. 16.3 GB); 24 GB: up to Q6_K_L (est. 24.6 GB) (estimated at 8,192 tokens with an f16 KV cache, files from the most-downloaded source).
- What is the command to run Orion-26B-A4B-v1 with Ollama?
- Run "ollama run hf.co/bartowski/TheDrummer_Orion-26B-A4B-v1-GGUF:Q4_K_M" to use the GGUF on Hugging Face directly. To use another quantization, replace the name at the end.