Qwen 3 30B-A3B vs Qwen 2.5 32B

The two models at a glance

About Qwen 3 30B-A3B

Alibaba's Qwen 3 MoE with 30B total and just 3B active parameters, supporting hybrid thinking mode. MMLU 81.4, AIME24 80.4, 100+ languages, Apache 2.0. Strengths: 3B active parameters keeps inference fast and cheap, MMLU 81.4 and AIME24 80.4 — strong on both general and reasoning, Apache 2.0, Hybrid thinking toggle per request.

About Qwen 2.5 32B

Alibaba's Qwen 2.5 32B, the open-weight 32B reference of late 2024 — matching 70B-class quality on most benchmarks at half the VRAM. Strengths: Quality on par with many 70B models, 128k context, Apache 2.0 license, Strong math, code, and reasoning.

How they compare

Qwen 3 30B-A3B comes from Alibaba and Qwen 2.5 32B from Alibaba. This comparison is built entirely from structured specs — parameter count, VRAM by quantization, context window, license, and published benchmark scores — so the verdict below reflects measurable differences rather than marketing claims.

At 30B vs 32B parameters, Qwen 2.5 32B is the larger of the two. Both need about 19 GB of VRAM at a Q4 quantization, so they fit the same GPU tier.

The two models target different sweet spots: Qwen 3 30B-A3B is tuned for chat, general, reasoning, multilingual, moe, while Qwen 2.5 32B leans toward chat, general. Match the model to your dominant workload rather than to raw size.

On a typical mid-range GPU, Qwen 3 30B-A3B pushes roughly 40 tokens/sec versus 12, so it is the more responsive choice for interactive or high-volume use.

Memory, quantization & throughput

Across quantization levels, Qwen 3 30B-A3B requires Q4 ≈ 19 GB, Q5 ≈ 23 GB, Q8 ≈ 35 GB, FP16 ≈ 62 GB, while Qwen 2.5 32B requires Q4 ≈ 19 GB, Q5 ≈ 23 GB, Q8 ≈ 35 GB, FP16 ≈ 64 GB. In practice Qwen 3 30B-A3B wants a 24 GB card at Q4, so plan your GPU around the Q4 or Q5 figure unless you specifically need the higher fidelity of Q8 or FP16.

Without a GPU, Qwen 3 30B-A3B needs roughly 32 GB of system RAM to run on CPU and Qwen 2.5 32B about 32 GB — workable for offline use but far slower than GPU inference. On a mid-range GPU you can expect on the order of 40 tokens/sec from Qwen 3 30B-A3B and 12 from Qwen 2.5 32B, scaling up to 100 and 30 tokens/sec on high-end hardware.

Which fits your GPU

Here is the highest-quality quantization of each model that fits common GPU memory budgets, so you can match Qwen 3 30B-A3B or Qwen 2.5 32B to the card you actually own:

• On a 24 GB GPU: Qwen 3 30B-A3B runs at Q5 (23 GB); Qwen 2.5 32B runs at Q5 (23 GB).

Benchmark scores

Reported benchmarks for Qwen 3 30B-A3B: MMLU (base) 81.38, AIME 2024 80.4.

Reported benchmarks for Qwen 2.5 32B: MMLU 83.3, HumanEval 90.2, MATH 83.1.

Bottom line: which should you pick?

• Pick Qwen 3 30B-A3B for lower VRAM and faster inference; pick Qwen 2.5 32B for maximum headline quality.
• Pick Qwen 3 30B-A3B if your workload is moe, multilingual, reasoning.

Which GPU should you buy to run Qwen 3 30B-A3B?

To run Qwen 3 30B-A3B locally at Q4, you need ~19 GB of VRAM. The best value for this is a RTX 4090 (24 GB VRAM).

Frequently asked questions

What is the difference between Qwen 3 30B-A3B and Qwen 2.5 32B?

The headline differences: Qwen 3 30B-A3B is a 30B model and Qwen 2.5 32B is 32B. Below we break down VRAM by quantization, benchmark scores, and a use-case verdict so you can pick the right one.

Can Qwen 3 30B-A3B and Qwen 2.5 32B run on a 24 GB GPU?

At a Q4 quantization, Qwen 3 30B-A3B needs about 19 GB of VRAM and fits comfortably on a 24 GB GPU; Qwen 2.5 32B needs about 19 GB and fits comfortably on a 24 GB GPU. Both have the same Q4 footprint.

Which is faster, Qwen 3 30B-A3B or Qwen 2.5 32B?

Qwen 3 30B-A3B is the smaller model (30B vs 32B), so on the same hardware it runs faster and uses less memory. The larger model trades speed for headline quality.

What licenses do Qwen 3 30B-A3B and Qwen 2.5 32B use?

Qwen 3 30B-A3B is licensed under Apache 2.0 and Qwen 2.5 32B under Apache 2.0.