LongCat 2.0 — Hardware Requirements & GPU Compatibility
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LongCat 2.0 is a 1775.6B-parameter open language model from Meituan in the LongCat family. It supports a context window of up to 262,144 tokens. At BF16 it needs about 3906.23 GB of VRAM — see which GPUs and Macs can run it below.
2.5K downloads
200 likesSpecifications
- Publisher
- Meituan
- Family
- LongCat
- Parameters
- 1775.6B
- Architecture
- LongcatCausalLM
- Context Length
- 262,144 tokens
- Vocabulary Size
- 163,840
- Release Date
- 2026-07-05
- License
- MIT
Get Started
HuggingFace
How Much VRAM Does LongCat 2.0 Need?
Select a quantization to see compatible GPUs below.
| Quantization | Bits | VRAM | + Context | File Size | Quality |
|---|---|---|---|---|---|
| BF16est. | 16.00 | 3906.2 GB | — | 3551.12 GB | Brain floating point 16 — preferred for training |
est.= calculated VRAM estimate; no published GGUF file found for that quantization yet. Other rows are verified against real community uploads.
Which GPUs Can Run LongCat 2.0?
BF16 · 3906.2 GBLongCat 2.0 (BF16) requires 3906.2 GB of VRAM to load the model weights. For comfortable inference with headroom for KV cache and system overhead, 5079+ GB is recommended. No single GPU has enough memory — multi-GPU or cluster setups are needed.
Frequently Asked Questions
- How much VRAM does LongCat 2.0 need?
LongCat 2.0 requires 3906.2 GB of VRAM at BF16.
VRAM = Weights + KV Cache + Overhead
Weights = 1775.6B × 16 bits ÷ 8 = 3551.1 GB
KV Cache + Overhead ≈ 355.1 GB (at 2K context + ~0.3 GB framework)
VRAM usage by quantization
BF163906.2 GB- Can NVIDIA GeForce RTX 5090 run LongCat 2.0?
No — LongCat 2.0 requires at least 3906.2 GB at BF16, which exceeds the NVIDIA GeForce RTX 5090's 32 GB of VRAM.
- Can I run LongCat 2.0 on a Mac?
LongCat 2.0 requires at least 3906.2 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 LongCat 2.0 locally?
Yes — LongCat 2.0 can run locally on consumer hardware. At BF16 quantization it needs 3906.2 GB of VRAM. Popular tools include Ollama, LM Studio, and llama.cpp.
- What's the download size of LongCat 2.0?
At BF16, the download is about 3551.12 GB.
- Which GPUs can run LongCat 2.0?
No single consumer GPU has enough VRAM to run LongCat 2.0 at BF16 (3906.2 GB). Multi-GPU or professional hardware is required.
- Which devices can run LongCat 2.0?
LongCat 2.0 requires at least 3906.2 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.