How much VRAM does K2 Horizon 32B need?

About 23.1 GB at Q4_K_M with 4K of context and batch 1, rising to roughly 30.8 GB at 32K. That figure is weights plus KV cache plus a 10% activation buffer, calculated from the model's architecture rather than measured on a card.

Will K2 Horizon 32B run on a 32GB GPU?

Yes — at Q4_K_M and 4K context it needs about 23.1 GB, which leaves 8.9 GB spare on a RTX 5090, or on any of the other 32 GB cards here (4 in all). That is the smallest size in this index that clears it comfortably; 26 of 78 do.

Which quantization of K2 Horizon 32B should I use?

No published quality comparison exists for this model, so pick by footprint: Q4_K_M is the level most people run, and a higher bits-per-weight level is more faithful. All 4 levels in the index are Q4_K_M, Q5_K_M, Q6_K, Q8_0.

K2 Horizon 32B

32B

MBZUAI K2 Horizon

The dense 32B member of MBZUAI IFM's K2 Horizon family (34.8B counted, Apache 2.0, released with its training data). All 64 layers keep an ordinary KV cache with 8 KV heads: Q4_K_M is about 23.1 GB at 4K, tight on a 24 GB card and comfortable on a 32 GB card up to 16K; each extra 32K of context adds roughly 8.8 GB. llama.cpp runs it as `k2-horizon`. Sizes come from IFM's own GGUF files (bartowski's Q4_K_M is about 1 GB larger); no per-level quality loss has been published.

⬇ 3.1K HF downloads♥ 16 likesIFM/K2-Horizon-32B-GGUF· stats from 10/21/2026

Consumer GPUPro GPUMac / Apple Silicon

524K

Max Context

Quant Variants

GGUF Q8_0

Best Quality

—

Accuracy Retained

Calculate VRAM Hugging Face Compare

Quantization Variants

Per-quant VRAM, quality loss, and inference speed on RTX 4090

Measured = run on this site · Estimated = not run here: calculated, or a figure this site has not verified · Community = public reports

Format	Level	BPW	VRAM	PPL Loss	Speed	Source	Actions
GGUF	Q4_K_M	4.85	23.1 GB	—	—	Estimated	Calc HF
GGUF	Q5_K_M	5.68	26.9 GB	—	—	Estimated	Calc HF
GGUF	Q6_K	6.56	30.9 GB	—	—	Estimated	Calc HF
GGUF	Q8_0	8.5	39.7 GB	—	—	Estimated	Calc HF

Which file each size is for

A file size is not a memory figure: the VRAM column adds the KV cache at 4K context and runtime buffers to the weights. A vision projector (mmproj), where the repo ships one, is a separate download and is in neither number.

GGUF Q4_K_MIFM/K2-Horizon-32B-GGUF · K2-Horizon-32B-Q4_K_M.gguf · 21.08 GB (21,075,778,656 bytes) · listing read 2026-10-21
GGUF Q5_K_MIFM/K2-Horizon-32B-GGUF · K2-Horizon-32B-Q5_K_M.gguf · 24.70 GB (24,696,478,816 bytes) · listing read 2026-10-21
GGUF Q6_KIFM/K2-Horizon-32B-GGUF · K2-Horizon-32B-Q6_K.gguf · 28.54 GB (28,543,472,736 bytes) · listing read 2026-10-21
GGUF Q8_0IFM/K2-Horizon-32B-GGUF · K2-Horizon-32B-Q8_0.gguf · 36.97 GB (36,966,425,696 bytes) · listing read 2026-10-21

Similar models

Compare with K2 Horizon

36B-A4B

K2 Horizon MoVA 36B-A4B

MBZUAI K2 Horizon

Consumer GPUPro GPU

24.2 GBmin VRAM—accuracy

The mixture-of-experts member of MBZUAI IFM's K2 Horizon family: 37.5B parameters with about 4B active per token, Apache 2.0, released with its training data. Every one of its 48 layers keeps an ordinary KV cache, so context is not cheap: Q4_K_M is about 24.2 GB at 4K, which is tight on a 24 GB card, and comfortable on a 32 GB card up to 16K. The 512K window would need about 129 GB. llama.cpp runs it as `k2-horizon`. Sizes come from IFM's own GGUF files (bartowski's Q4_K_M is about 0.3 GB larger); no per-level quality loss has been published.

K2 Horizon 7B

MBZUAI K2 Horizon

Consumer GPUMac / Apple Silicon

6.5 GBmin VRAM—accuracy

The small dense member of MBZUAI IFM's K2 Horizon family, Apache 2.0, released with its training data. It is called 7B but holds 9.0B parameters: the 250K-token vocabulary's input and output tables add about 2B. Q4_K_M is about 6.5 GB at 4K, comfortable on an 8 GB card at that length; a 16 GB card holds it comfortably to 32K (10.8 GB), and 128K needs about 25.6 GB because every layer keeps an ordinary KV cache. llama.cpp runs it as `k2-horizon`. Sizes come from IFM's own GGUF files (bartowski's Q4_K_M is about 0.2 GB larger); no per-level quality loss has been published.

36B

Seed-OSS 36B Instruct

ByteDance Seed

Consumer GPUPro GPU

19.5 GBmin VRAM98.7%accuracy

Dense 36B with a native 512K context. The Q4_K_M file is 21.8 GB, so with cache and buffers it needs about 23.9 GB at 4K: tight on a 24 GB card, where Q3_K_M (19.5 GB) is the comfortable choice, or a 2×16GB split. The AWQ build is 21.1 GB, not the 4-bit rate the name suggests. Context is the real cost: 512K of KV cache is roughly 128GB on its own, so budget context first and weights second.

27B

Qwen3.8 27B

Alibaba Qwen3.8

Consumer GPUPro GPU

15.3 GBmin VRAM—accuracy

Hybrid attention: only 16 of its 64 layers keep a KV cache, which is why a 27B model holds a 262K context in about 16GB of cache rather than 64GB. Sizing it as a conventional stack overstates the cache fourfold — the estimates here count the 16 and match published measurements at 8K, 32K and 262K. Quality loss per level has not been published.

Running K2 Horizon 32B locally

At Q4_K_M and 4K of context, K2 Horizon 32B needs about 23.1 GB — 20.0 GB of weights, 1.00 GB of KV cache and a 2.1 GB activation buffer. The smallest cards in this index that clear that comfortably are 32 GB ones — 4 of them, from the RTX 5090 up — and 26 of the 78 cards here do. These are calculated figures, not measurements: the estimate stops counting a card as comfortable at 88% of its VRAM, which is roughly the room a desktop session needs.

What longer context costs

Going from 4K to 32K adds about 7.00 GB, taking the total to 30.8 GB. Weights do not move with context — only the KV cache does, and it grows linearly, so this is the number to watch when planning for long documents. The model's native window is 512K; holding all of it at Q4_K_M would need about 163 GB.

Which build to download

This index only tracks K2 Horizon 32B in GGUF, across 4 levels (Q4_K_M, Q5_K_M, Q6_K, Q8_0). No per-level perplexity sweep has been published for this model, so the quality column is empty rather than estimated — within one model, more bits per weight is the only ordering the data supports. No throughput has been measured for this model on this site's hardware. GGUF runs on llama.cpp and Ollama across NVIDIA, AMD and Apple silicon; AWQ and GPTQ target vLLM on CUDA and ROCm; EXL2 is ExLlamaV2 — CUDA only, and now archived, so local use rather than serving.

Common questions

How much VRAM does K2 Horizon 32B need?: About 23.1 GB at Q4_K_M with 4K of context and batch 1, rising to roughly 30.8 GB at 32K. That figure is weights plus KV cache plus a 10% activation buffer, calculated from the model's architecture rather than measured on a card.
Will K2 Horizon 32B run on a 32GB GPU?: Yes — at Q4_K_M and 4K context it needs about 23.1 GB, which leaves 8.9 GB spare on a RTX 5090, or on any of the other 32 GB cards here (4 in all). That is the smallest size in this index that clears it comfortably; 26 of 78 do.
Which quantization of K2 Horizon 32B should I use?: No published quality comparison exists for this model, so pick by footprint: Q4_K_M is the level most people run, and a higher bits-per-weight level is more faithful. All 4 levels in the index are Q4_K_M, Q5_K_M, Q6_K, Q8_0.

Where this model fits

Sized at Q4_K_M with a 4K context window, smallest card first. Comfortable means the estimate uses at most 88% of the memory.

Runs comfortably on: RTX 509032GB · +8.9 Arc Pro B70 32G32GB · +8.9 Radeon AI PRO R9700 32G32GB · +8.9 Instinct MI100 32G32GB · +8.9 Mac M3 Pro 36G36GB · +3.9
Tight but possible: RTX 309024GB Radeon RX 7900 XTX24GB RTX 409024GB
Just misses: Radeon RX 7900 XT+3.1GB over Mac M4 24G+5.1GB over
Ships in: GGUF
Try it yourself: Size it in the calculator Generate the run command

How to actually run this

Deployment guides for this model and this class of hardware.

This page's figures change when the model or the runtime does.Last updated 2026-10-21 RSS → /feed.xml