CyberSecQwen 4B vs Qwen1.5 0.5B Chat
Side-by-side comparison of VRAM requirements, quantization, context length, and hardware compatibility.
Specifications
| CyberSecQwen 4B | Qwen1.5 0.5B Chat | |
|---|---|---|
| Parameters | 4.0B | 620M |
| Context | 262K | 33K |
| Architecture | Qwen3ForCausalLM | Qwen2ForCausalLM |
| License | Apache 2.0 | Other |
| Downloads | 1.2K | 85.9K |
| Released | May 2026 | Apr 2024 |
VRAM by Quantization: CyberSecQwen 4B vs Qwen1.5 0.5B Chat
| Quantization | Bits | CyberSecQwen 4B VRAM | Qwen1.5 0.5B Chat VRAM |
|---|---|---|---|
| Q2_K | 3.40 | — | 0.8 GB |
| Q3_K_M | 3.90 | — | 0.8 GB |
| Q3_K_S | 3.50 | — | 0.8 GB |
| Q4_0 | 4.00 | — | 0.8 GB |
| Q4_K_M | 4.80 | — | 0.9 GB |
| Q5_K_M | 5.70 | — | 0.9 GB |
| Q6_K | 6.60 | — | 1.0 GB |
| Q8_0 | 8.00 | — | 1.1 GB |
Verdict
CyberSecQwen 4B supports a longer context window (262K tokens). Qwen1.5 0.5B Chat is the more widely downloaded of the two.
Frequently Asked Questions
- Which has a longer context window, CyberSecQwen 4B or Qwen1.5 0.5B Chat?
CyberSecQwen 4B supports 262,144 tokens and Qwen1.5 0.5B Chat supports 32,768 tokens.
- What is the difference between CyberSecQwen 4B and Qwen1.5 0.5B Chat?
CyberSecQwen 4B is a 4.0B model from lablab-ai-amd-developer-hackathon (Qwen family), while Qwen1.5 0.5B Chat is a 620M model from Alibaba (Qwen family). Compare their VRAM requirements above to see which fits your GPU or Mac.