o1-preview vs Grok-2

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

o1-preview

OpenAI

AI Mastery Index88.5

LMSYS Arena1335

Technical (MMLU-Pro)90.8%

Cost per 1M Tokens$15

Grok-2

xAI

AI Mastery Index84.5

LMSYS Arena1260

Technical (MMLU-Pro)87.5%

Cost per 1M Tokens$5

Architect's Verdict

When comparing o1-preview and Grok-2, o1-preview edges out in overall capabilities according to the AI Mastery Index. However, for cost-sensitive workloads, Grok-2 offers a more economical API at $5 per 1M tokens. Your choice should depend heavily on whether you prioritize raw reasoning (MMLU) or scalable deployment economics.