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The Domesday Book ofKWJ · AI

Qwen 3 vs DeepSeek R1

Qwen 3 for multilingual production; R1 for pure reasoning at cost.

Qwen 3
Alibaba's flagship open-weights family. Best non-English capability among open models, strong on coding.

Use this when

Non-English workloads, multilingual applications, broad language support.

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DeepSeek R1
The open-weights reasoning model that printed an industry shockwave. Trained at a fraction of frontier-lab costs.

Use this when

Reasoning-heavy English tasks, cost-sensitive reasoning, self-hosting.

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Cost comparison

Both free self-hosted; similar inference service pricing.