CyberSecQwen 4B vs Qwen3.5 2B Text Only

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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Qwen3.5 2B Text Only

principled-intelligence · 1.9B

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Specifications

CyberSecQwen 4BQwen3.5 2B Text Only
Parameters4.0B1.9B
Context262K262K
ArchitectureQwen3ForCausalLMQwen3_5ForCausalLM
LicenseApache 2.0Apache 2.0
Downloads1.2K104
ReleasedMay 2026Mar 2026

VRAM by Quantization: CyberSecQwen 4B vs Qwen3.5 2B Text Only

QuantizationBitsCyberSecQwen 4B VRAMQwen3.5 2B Text Only VRAM
BF1616.008.5 GB4.2 GB

Verdict

Qwen3.5 2B Text Only needs less VRAM at BF16 (4.2 GB vs 8.5 GB), so it fits on smaller GPUs. CyberSecQwen 4B is the more widely downloaded of the two.

Frequently Asked Questions

Which needs less VRAM, CyberSecQwen 4B or Qwen3.5 2B Text Only?

At BF16, CyberSecQwen 4B needs 8.5 GB and Qwen3.5 2B Text Only needs 4.2 GB, so Qwen3.5 2B Text Only is the lighter option to run locally.

Which has a longer context window, CyberSecQwen 4B or Qwen3.5 2B Text Only?

CyberSecQwen 4B supports 262,144 tokens and Qwen3.5 2B Text Only supports 262,144 tokens.

What is the difference between CyberSecQwen 4B and Qwen3.5 2B Text Only?

CyberSecQwen 4B is a 4.0B model from lablab-ai-amd-developer-hackathon (Qwen family), while Qwen3.5 2B Text Only is a 1.9B model from principled-intelligence (Qwen family). Compare their VRAM requirements above to see which fits your GPU or Mac.