Qwen 2 72B vs Grok 4.5

Head-to-head technical comparison of intelligence, capabilities, and API pricing.

Qwen 2 72B

Alibaba

AI Mastery Index83.2

LMSYS Arena1245

Technical (MMLU-Pro)86.5%

Cost per 1M Tokens$0

Grok 4.5

xAI

AI Mastery Index93.4

LMSYS Arena1465

Technical (MMLU-Pro)92.8%

Cost per 1M Tokens$2

Architect's Verdict

When comparing Qwen 2 72B and Grok 4.5, Grok 4.5 edges out in overall capabilities according to the AI Mastery Index. However, for cost-sensitive workloads, Qwen 2 72B offers a more economical API at $0 per 1M tokens. Your choice should depend heavily on whether you prioritize raw reasoning (MMLU) or scalable deployment economics.