Kimi K2.6 519B NVFP4 — Hardware Requirements & GPU Compatibility
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Kimi K2.6 519B NVFP4 is a 519.5B-parameter open language model from 0xSero in the Kimi K2 family. It supports a context window of up to 262,144 tokens. At BF16 it needs about 1042.95 GB of VRAM — see which GPUs and Macs can run it below.
217 downloads
12 likesSpecifications
- Publisher
- 0xSero
- Family
- Kimi K2
- Parameters
- 519.5B
- Architecture
- KimiK25ForConditionalGeneration
- Context Length
- 262,144 tokens
- Vocabulary Size
- 163,840
- Release Date
- 2026-06-02
- License
- Other
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HuggingFace
How Much VRAM Does Kimi K2.6 519B NVFP4 Need?
Select a quantization to see compatible GPUs below.
| Quantization | Bits | VRAM | + Context | File Size | Quality |
|---|---|---|---|---|---|
| BF16 | 16.00 | 1043.0 GB | 1497.9 GB | 1039.07 GB | Brain floating point 16 — preferred for training |
Which GPUs Can Run Kimi K2.6 519B NVFP4?
BF16 · 1043.0 GBKimi K2.6 519B NVFP4 (BF16) requires 1043.0 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 1356+ GB is recommended. Using the full 262K context window can add up to 454.9 GB, bringing total usage to 1497.9 GB. No single GPU has enough memory — multi-GPU or cluster setups are needed.
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Frequently Asked Questions
- How much VRAM does Kimi K2.6 519B NVFP4 need?
Kimi K2.6 519B NVFP4 requires 1043.0 GB of VRAM at BF16. Full 262K context adds up to 454.9 GB (1497.9 GB total).
VRAM = Weights + KV Cache + Overhead
Weights = 519.5B × 16 bits ÷ 8 = 1039.1 GB
KV Cache + Overhead ≈ 3.9 GB (at 2K context + ~0.3 GB framework)
KV Cache + Overhead ≈ 458.8 GB (at full 262K context)
VRAM usage by quantization
BF161043.0 GBBF16 + full context1497.9 GB- Can NVIDIA GeForce RTX 5090 run Kimi K2.6 519B NVFP4?
No — Kimi K2.6 519B NVFP4 requires at least 1043.0 GB at BF16, which exceeds the NVIDIA GeForce RTX 5090's 32 GB of VRAM.
- Can I run Kimi K2.6 519B NVFP4 on a Mac?
Kimi K2.6 519B NVFP4 requires at least 1043.0 GB at BF16, which exceeds the unified memory of most consumer Macs. You would need a Mac Studio or Mac Pro with a high-memory configuration.
- Can I run Kimi K2.6 519B NVFP4 locally?
Yes — Kimi K2.6 519B NVFP4 can run locally on consumer hardware. At BF16 quantization it needs 1043.0 GB of VRAM. Popular tools include Ollama, LM Studio, and llama.cpp.
- What's the download size of Kimi K2.6 519B NVFP4?
At BF16, the download is about 1039.07 GB.
- Which GPUs can run Kimi K2.6 519B NVFP4?
No single consumer GPU has enough VRAM to run Kimi K2.6 519B NVFP4 at BF16 (1043.0 GB). Multi-GPU or professional hardware is required.
- Which devices can run Kimi K2.6 519B NVFP4?
Kimi K2.6 519B NVFP4 requires at least 1043.0 GB at BF16, which exceeds the unified memory of most consumer devices. A high-memory Mac Studio, Mac Pro, or multi-GPU desktop setup is recommended.