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OpenMOSEHunyuan 3HYV3ForCausalLM

Hy3 REAP 200B 21B — Hardware Requirements & GPU Compatibility

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Hy3 REAP 200B 21B is a 199.6B-parameter open language model from OpenMOSE in the Hunyuan 3 family. It supports a context window of up to 262,144 tokens. At Q4_K_M it needs about 120.39 GB of VRAM — see which GPUs and Macs can run it below.

199.6B params · MoE18B active262K contextApache 2.0247 downloads2 likes323 quant downloads
Based on Hy3

Hy3 REAP 200B 21B runs on a 128 GB+ Mac or a datacenter GPU

Best local pick → Mac Pro M2 Ultra (128 GB) · Q4_K_M · 122.7 GB · ~28 tok/s

Macs from96 GB Q2_K · ~34 tok/s

Apache 2.0

Not set up for it?

Reference GPU · RTX 4090 24 GB

Estimates, ±20% · how we estimate

Run Hy3 REAP 200B 21B

One recommended way. Every other method, OS and quant is in the step-by-step guide.

Recommended

Ollama
one command · needs Ollama installed
$ollama run hf.co/OpenMOSE/Hy3-REAP-200B-21B-GGUF:Q4_K_M

Q4_K_M runs on one Instinct MI250X 128 GB · 16K context

Download: Q4_K_M/Hy3-REAP-200B-GGUF-Q4_K_M-00001-of-00007.gguf122.40 GB + 6 partsOpenMOSE

install, OS, other quants

Other ways

each opens step-by-step

Run in cloud

Fits on B200 (192 GB) (69 GB headroom) · Q4_K_M

Generation speed
~153 tok/s
generation speed
Cost per 1M output tokens
$10.85
per 1M output tokens

How Much VRAM Does Hy3 REAP 200B 21B Need?

Select a quantization level; the listed hardware adheres to it.

QuantizationVRAM+32KRuns on
68 GB73 GB2-bit · i-quant medium — Importance-weighted 2-bit, mediumRuns on RTX PRO 5000 Blackwell 72 GB
78.0 GB83 GB3-bit · i-quant — Importance-weighted 3-bitRuns on RTX PRO 6000 Blackwell Max-Q Workstation Edition 96 GB
85.5 GB90.5 GB2-bit · K-quant — 2-bit quantization with K-quant improvementsRuns on RTX PRO 6000 Blackwell Max-Q Workstation Edition 96 GB
97.9 GB103 GB3-bit medium — 3-bit medium quantizationRuns on Instinct MI250X 128 GB
107.9 GB112.9 GB4-bit · i-quant compact — Importance-weighted 4-bit, compactRuns on Instinct MI250X 128 GB
120.4 GB125.4 GB4-bit medium — 4-bit medium quantization — most popular sweet spotRuns on Instinct MI250X 128 GB
142.8 GB147.9 GB5-bit medium — 5-bit medium quantization — good quality/size tradeoffRuns on B200 192 GB
165.3 GB170.3 GB6-bit, very good — 6-bit quantization, very good qualityRuns on B200 192 GB
200.2 GB205.3 GB8-bit, near-lossless — 8-bit quantization, near-losslessRuns on Instinct MI325X 256 GB
399.8 GB404.8 GB16-bit · bfloat — Brain floating point 16 — preferred for trainingRuns on 6× H100 SXM 80 GB
est.calculated, no published file yet

Selected Q4_K_M

4-bit medium quantization

122.7GBat 16K context

Weights
119.8 GB
KV cache
2.7 GB
Overhead
0.3 GB

Server-class: ~122.7 GB at 16K context · one Instinct MI250X 128 GB

Or rent B200 from $5.98/hr.

Which Hardware Can Run Hy3 REAP 200B 21B?

Q4_K_M · 120.4 GB

Hy3 REAP 200B 21B (Q4_K_M) requires 120.4 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 157+ GB is recommended. Using the full 262K context window can add up to 42.6 GB, bringing total usage to 163 GB. No consumer GPU has enough memory. 15 devices with unified memory can run Hy3 REAP 200B 21B, including Mac Studio (M3 Ultra, 256GB), Mac Studio (M3 Ultra, 512GB), Mac Pro M2 Ultra (128 GB).

By VRAM tier · typical GPUs and Macs at Q4_K_M

Consumer GPUs (up to 32 GB) and Macs up to 64 GB: too small for this model (needs ≥ 70.4 GB)8 GB tier →12 GB tier →16 GB tier →24 GB tier →Macs →

Alternatives to Hy3 REAP 200B 21B

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Specifications

Publisher
OpenMOSE
Family
Hunyuan 3
Parameters
199.6B
Active parameters
18.4B per token
Architecture
HYV3ForCausalLM
Context Length
262,144 tokens
Vocabulary Size
120,832
Release Date
2026-07-16
License
Apache 2.0

Frequently Asked Questions

How much VRAM does Hy3 REAP 200B 21B need?

Hy3 REAP 200B 21B requires 120.4 GB of VRAM at Q4_K_M, or 399.8 GB at BF16. Full 262K context adds up to 42.6 GB (163 GB total).

VRAM = Weights + KV Cache + Overhead

Weights = 199.6B × 4.8 bits ÷ 8 = 119.8 GB

KV Cache + Overhead ≈ 0.6 GB (at 2K context + ~0.3 GB framework)

Fit ratings and hardware model lists check this model with room for a 16K-token context, which needs a little more memory.

KV Cache + Overhead ≈ 43.2 GB (at full 262K context)

VRAM usage by quantization

120.4 GB
163.0 GB

Learn more about VRAM estimation →

Can NVIDIA GeForce RTX 5090 run Hy3 REAP 200B 21B?

No — Hy3 REAP 200B 21B requires at least 68 GB at IQ2_M, which exceeds the NVIDIA GeForce RTX 5090's 32 GB of VRAM.

What's the best quantization for Hy3 REAP 200B 21B?

For Hy3 REAP 200B 21B, Q4_K_M (120.4 GB) offers the best balance of quality and VRAM usage. Q5_K_M (142.8 GB) provides better quality if you have the VRAM. The smallest option is IQ2_M at 68 GB.

VRAM requirement by quantization

IQ2_M
68.0 GB
Q2_K
85.5 GB
Q4_K_M ★
120.4 GB
Q5_K_M
142.8 GB
Q6_K
165.3 GB
BF16
399.8 GB

★ Recommended — best balance of quality and VRAM usage.

Learn more about quantization →

Can I run Hy3 REAP 200B 21B on a Mac?

Yes — Mac Studio (M3 Ultra, 96GB) and 20 other Macs can run Hy3 REAP 200B 21B, the smallest at Q2_K. Apple Silicon uses unified memory, so the model shares RAM with the system. At Q4_K_M you need at least 120.4 GB of usable unified memory (RAM minus macOS overhead), from Mac Pro M2 Ultra (128 GB).

Can I run Hy3 REAP 200B 21B locally?

Yes — Hy3 REAP 200B 21B can run locally on consumer hardware. Popular tools include Ollama, LM Studio, and llama.cpp.

How fast is Hy3 REAP 200B 21B?

At Q4_K_M, Hy3 REAP 200B 21B can reach ~55 tok/s on AMD Instinct MI350X. Speed depends mainly on GPU memory bandwidth. Real-world results typically within ±20%.

tok/s = 1000 ÷ (active GB ÷ (bandwidth GB/s × efficiency) × 1000 + layers × routing ms)

Mixture-of-Experts: just the active experts get read for each token, along with a fixed routing cost per layer.

Example: NVIDIA B200 → 11.1 GB active ÷ (8000 × 0.65) = 2.13 ms, plus 80 layers × 0.055 ms = 4.40 ms, so 1000 ÷ 6.53 ms = ~153 tok/s

Estimated speed at Q4_K_M (120.4 GB)

~153 tok/s
~153 tok/s
~127 tok/s

Real-world results typically within ±20%. Speed depends on batch size, quantization kernel, and software stack.

Learn more about tok/s estimation →

What's the download size of Hy3 REAP 200B 21B?

At Q4_K_M, the download is about 119.75 GB. The full-precision BF16 version is 399.17 GB. The smallest option (IQ2_M) is 67.36 GB.

Which GPUs can run Hy3 REAP 200B 21B?

No single consumer GPU has enough VRAM to run Hy3 REAP 200B 21B at Q4_K_M (120.4 GB). Multi-GPU or professional hardware is required.

Which devices can run Hy3 REAP 200B 21B?

15 devices with unified memory can run Hy3 REAP 200B 21B at Q4_K_M (120.4 GB), including Mac Pro M2 Ultra (128 GB), Mac Pro M2 Ultra (192 GB), Mac Studio (M3 Ultra, 256GB), Mac Studio (M3 Ultra, 512GB). Apple Silicon Macs use unified memory shared between CPU and GPU, making them well-suited for local LLM inference.