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Humanizer VRAM Requirements

Country not known yetStephen Yu (independent) · Released September 11, 2026New

Humanizer has 12.0B parameters. In BF16 its weights alone take 22.3 GiB; quantized to 4-bit, about 6.90 GiB. Each 32K-token request adds 0.81 GiB of KV cache. Cheapest way to run it today: 1 × GeForce RTX 3090 (24 GB) at $0.143 per hour.

Size your own setup in the calculator →

VRAM by precision and context length

Weights plus the KV cache of one request (BF16 cache), in GiB. Add 1 to 3 GiB for the inference engine itself.

Weights formatWeights only+ 8K context+ 32K context+ 128K context+ 256K context
BF16 / FP1622.322.723.124.626.6
FP8 / INT813.013.513.815.317.3
4-bit (GGUF Q4_K_M)6.907.347.719.2111.2

Humanizer GGUF files

Exact size of each quantization in mradermacher/humanizer-i1-GGUF (opens in a new tab), and the smallest GPU that runs it with llama.cpp, Ollama or LM Studio and an 8K-token context.

QuantizationFile sizeSmallest GPU
Q6_K9.11 GiBRTX 4070 / 4070 SUPER (12 GB)
Q5_K_M7.96 GiBRTX 4070 / 4070 SUPER (12 GB)
Q5_K_S7.77 GiBRTX 4070 / 4070 SUPER (12 GB)
Q4_17.13 GiBRTX 4070 / 4070 SUPER (12 GB)
Q4_K_M6.87 GiBRTX 4070 / 4070 SUPER (12 GB)
Q4_K_S6.54 GiBRTX 4060 (8 GB)
Q4_06.52 GiBRTX 4060 (8 GB)
IQ4_NL6.50 GiBRTX 4060 (8 GB)
IQ4_XS6.18 GiBRTX 4060 (8 GB)
Q3_K_L6.12 GiBRTX 4060 (8 GB)
Q3_K_M5.67 GiBRTX 4060 (8 GB)
IQ3_M5.34 GiBRTX 4060 (8 GB)
IQ3_S5.15 GiBRTX 4060 (8 GB)
Q3_K_S5.15 GiBRTX 4060 (8 GB)
IQ3_XS4.91 GiBRTX 4060 (8 GB)
IQ3_XXS4.52 GiBRTX 4060 (8 GB)
Q2_K4.50 GiBRTX 4060 (8 GB)
Q2_K_S4.19 GiBRTX 4060 (8 GB)
IQ2_M4.07 GiBRTX 4060 (8 GB)
IQ2_S3.80 GiBRTX 4060 (8 GB)
IQ2_XS3.62 GiBRTX 4060 (8 GB)
IQ2_XXS3.32 GiBRTX 4060 (8 GB)
IQ1_M2.98 GiBRTX 4060 (8 GB)
IQ1_S2.78 GiBRTX 4060 (8 GB)

Read every day from Hugging Face. Split files are added together; vision projectors are left out.

How many GPUs to run Humanizer

Fewest GPUs that fit the weights plus one 8K-token request. Data-center GPUs use vLLM (90% of memory usable), the others llama.cpp. Several GPUs split the model with tensor or pipeline parallelism.

GPUBF16 / FP16FP8 / INT84-bit (GGUF Q4_K_M)
GeForce RTX 4090 24 GB111
GeForce RTX 5090 32 GB111
RTX PRO 6000 Blackwell 96 GB111
Mac M5 Max 128 GB 96 GB usable111
NVIDIA H100 80 GB111
NVIDIA H200 141 GB111
NVIDIA B200 (HGX) 180 GB111

Cheapest way to run Humanizer today

For each GPU: the fewest cards that fit Humanizer with one 8K-token request, the most faithful weight format at that count, and the cheapest on-demand price (2026-10-10).

On-demand prices from RunPod, Vast.ai, Verda and Azure, checked every hour. Serving many users needs more KV cache, so more memory: size it in the calculator. Some links are affiliate links: StudioTV may earn a commission, at no extra cost to you.

KV cache: how memory grows with context

Architecture: 48 layers · 8 full attention (1 KV × 512) · 40 sliding-window layers (1024 tokens, 8 KV × 256). Its KV cache is 14.8× smaller than if every layer used full attention, because most layers only keep a short window of recent tokens.

Context per requestBF16 cacheFP8 cache
8K tokens0.44 GiB0.22 GiB
32K tokens0.81 GiB0.41 GiB
128K tokens2.31 GiB1.16 GiB
256K tokens4.31 GiB2.16 GiB

Humanizer VRAM FAQ

How much VRAM does Humanizer need?

In BF16 the weights alone take 22.3 GiB (24 GB). In FP8 that is 13.0 GiB, and about 6.90 GiB with 4-bit quantization (Q4_K_M). Each request then adds KV cache: 0.44 GiB at 8K tokens and 0.81 GiB at 32K (BF16 cache).

Can Humanizer run on a single RTX 4090 (24 GB)?

Yes. In BF16 / FP16 it fits on one RTX 4090 with an 8K-token context (22.7 GiB including the cache, with llama.cpp).

What is the cheapest way to run Humanizer?

On 2026-10-10, the cheapest on-demand setup is 1 × GeForce RTX 3090 (24 GB) with BF16 / FP16 weights on Vast.ai, at $0.143 per hour (about $104.39 per month). Next: 1 × GeForce RTX 5080 (16 GB) with FP8 / INT8 weights on Vast.ai, at $0.223 per hour. Sized for one 8K-token request; prices are checked every hour.

How many H100 GPUs does Humanizer need?

With one request and an 8K-token context: 1 in BF16, 1 in FP8 and 1 in 4-bit (vLLM, 90% of memory usable). Serving many users at once needs more memory for their KV caches: the calculator sizes that for you.

Humanizer VRAM badge

For a model card or a README: the 4-bit size and the smallest GPU it fits on, linked to this page. Data as JSON: /api/models/humanizer.json.

Humanizer VRAM badge

[![Humanizer VRAM](https://studiotvai.com/badge/humanizer.svg)](https://studiotvai.com/vram-requirements/humanizer)

Other models

Same family (sliding-window attention): Gemma 4 12B · Gemma 4 31B · Gemma 4 26B-A4B · gpt-oss 20B · gpt-oss 120B · Llama 4 Scout 17B-16E · Llama 4 Maverick 17B-128E · Kolibri-1 · Mellum2.1 12B-A2.5B · Spark-X2.5 4B

All models: Llama 3.1 8B · Mistral Small 3.2 24B · Qwen3 32B · Llama 3.3 70B · Llama 3.1 405B · Qwen3.5 4B · Qwen3.5 9B · Qwen3.8 27B · Qwen3.6 35B-A3B · Qwen3.5 122B-A10B · Qwen3.8-Flash-Next · LFM2.5 8B-A1B · LFM2 24B-A2B · Gemma 4 12B · Gemma 4 31B · Gemma 4 26B-A4B · gpt-oss 20B · gpt-oss 120B · Llama 4 Scout 17B-16E · Llama 4 Maverick 17B-128E · Kolibri-1 · Nemotron 3 Nano 30B-A3B · Nemotron 3 Super 120B-A12B · MiniMax M2.7 · DeepSeek R1 · Kimi K2.6 · GLM-5.3 · GLM-5.3-Flash · DeepSeek V4 Flash · DeepSeek V4 Pro · DeepSeek V4.1 Flash · MiMo-V2.6 Pro · MiMo-V2.6 Flash · Kimi K3 · Mistral Large 4 · Qwen3-Coder-Next 80B-A3B · Qwen3-Coder 30B-A3B · Qwen3-Coder 480B-A35B · DeepSeek V4 Flash Vision Exp · Qwen3.8 2.4T-A95B · Ornith 1.5 397B · Ornith 1.5 35B-A3B · Ornith 1.5 9B · Atria Dawn Preview · Intern S2 397B · Clef · Clef Flash · D1 3B · JEV 27B VL · Mellum2.1 12B-A2.5B · LightOnOCR-3 4B · Spark-X2.5 4B · Agnes-3.0-Qwen

Estimates, not guarantees: computed from the official config.json with the same engine as the LLM VRAM Calculator. Real usage depends on your engine version and settings.