CyberSecQwen 4B vs Qwen1.5 1.8B
Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.
Specifications
| CyberSecQwen 4B | Qwen1.5 1.8B | |
|---|---|---|
| Parameters | 4.0B | 1.8B |
| Context | 262K | 33K |
| Architecture | Qwen3ForCausalLM | Qwen2ForCausalLM |
| License | Apache 2.0 | Other |
| Downloads | 1.2K | 21.5K |
| Released | May 2026 | Apr 2024 |
VRAM by Quantization: CyberSecQwen 4B vs Qwen1.5 1.8B
| Quantization | Bits | CyberSecQwen 4B VRAM | Qwen1.5 1.8B VRAM |
|---|---|---|---|
| BF16 | 16.00 | 8.5 GB | 4.4 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.