Qwen1.5 72B Chat vs Qwen3 Coder Next

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

Qwen1.5 72B Chat

Alibaba · 72.3B

Chat
Qwen3 Coder Next

Alibaba · 79.7B

ChatCode

Specifications

Qwen1.5 72B ChatQwen3 Coder Next
Parameters72.3B79.7B
Context33K262K
ArchitectureQwen2ForCausalLMQwen3NextForCausalLM
LicenseOtherApache 2.0
Downloads10.1K1.0M
ReleasedFeb 2026

VRAM by Quantization: Qwen1.5 72B Chat vs Qwen3 Coder Next

QuantizationBitsQwen1.5 72B Chat VRAMQwen3 Coder Next VRAM
Q2_K3.4036.4 GB34.3 GB
Q3_K_M3.9040.9 GB39.2 GB
Q3_K_S3.5037.3 GB35.3 GB
Q4_04.0040.2 GB
Q4_K_M4.8049.0 GB48.2 GB
Q5_K_M5.7057.2 GB
Q6_K6.6066.1 GB
Q8_08.0080.1 GB

Verdict

Qwen3 Coder Next needs less VRAM at Q4_K_M (48.2 GB vs 49.0 GB), so it fits on smaller GPUs. Qwen3 Coder Next supports a longer context window (262K tokens). Qwen3 Coder Next is the more widely downloaded of the two.

Frequently Asked Questions

Which needs less VRAM, Qwen1.5 72B Chat or Qwen3 Coder Next?

At Q4_K_M, Qwen1.5 72B Chat needs 49.0 GB and Qwen3 Coder Next needs 48.2 GB, so Qwen3 Coder Next is the lighter option to run locally.

Which has a longer context window, Qwen1.5 72B Chat or Qwen3 Coder Next?

Qwen1.5 72B Chat supports 32,768 tokens and Qwen3 Coder Next supports 262,144 tokens.

What is the difference between Qwen1.5 72B Chat and Qwen3 Coder Next?

Qwen1.5 72B Chat is a 72.3B model from Alibaba (Qwen family), while Qwen3 Coder Next is a 79.7B model from Alibaba (Qwen family). Compare their VRAM requirements above to see which fits your GPU or Mac.