Claude 3.5 Sonnet vs Grok-2

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

Claude 3.5 Sonnet

Anthropic

AI Mastery Index88

LMSYS Arena1282

Technical (MMLU-Pro)88.3%

Cost per 1M Tokens$3

Grok-2

xAI

AI Mastery Index84.5

LMSYS Arena1260

Technical (MMLU-Pro)87.5%

Cost per 1M Tokens$5

Architect's Verdict

When comparing Claude 3.5 Sonnet and Grok-2, Claude 3.5 Sonnet edges out in overall capabilities according to the AI Mastery Index. However, for cost-sensitive workloads, Claude 3.5 Sonnet offers a more economical API at $3 per 1M tokens. Your choice should depend heavily on whether you prioritize raw reasoning (MMLU) or scalable deployment economics.