CyberSecQwen 4B vs Qwen1.5 1.8B

Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.

CyberSecQwen 4B

lablab-ai-amd-developer-hackathon · 4.0B

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Qwen1.5 1.8B

Alibaba · 1.8B

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Specifications

CyberSecQwen 4BQwen1.5 1.8B
Parameters4.0B1.8B
Context262K33K
ArchitectureQwen3ForCausalLMQwen2ForCausalLM
LicenseApache 2.0Other
Downloads1.2K21.5K
ReleasedMay 2026Apr 2024

VRAM by Quantization: CyberSecQwen 4B vs Qwen1.5 1.8B

QuantizationBitsCyberSecQwen 4B VRAMQwen1.5 1.8B VRAM
BF1616.008.5 GB4.4 GB

Verdict

Qwen1.5 1.8B needs less VRAM at BF16 (4.4 GB vs 8.5 GB), so it fits on smaller GPUs. CyberSecQwen 4B supports a longer context window (262K tokens). Qwen1.5 1.8B is the more widely downloaded of the two.

Frequently Asked Questions

Which needs less VRAM, CyberSecQwen 4B or Qwen1.5 1.8B?

At BF16, CyberSecQwen 4B needs 8.5 GB and Qwen1.5 1.8B needs 4.4 GB, so Qwen1.5 1.8B is the lighter option to run locally.

Which has a longer context window, CyberSecQwen 4B or Qwen1.5 1.8B?

CyberSecQwen 4B supports 262,144 tokens and Qwen1.5 1.8B supports 32,768 tokens.

What is the difference between CyberSecQwen 4B and Qwen1.5 1.8B?

CyberSecQwen 4B is a 4.0B model from lablab-ai-amd-developer-hackathon (Qwen family), while Qwen1.5 1.8B is a 1.8B model from Alibaba (Qwen family). Compare their VRAM requirements above to see which fits your GPU or Mac.