GPT-4o vs DeepSeek-V4 Pro

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

GPT-4o

OpenAI

AI Mastery Index87.2

LMSYS Arena1287

Technical (MMLU-Pro)88.7%

Cost per 1M Tokens$5

DeepSeek-V4 Pro

DeepSeek

AI Mastery Index91.8

LMSYS Arena1449

Technical (MMLU-Pro)91.8%

Cost per 1M Tokens$1.32

Architect's Verdict

When comparing GPT-4o and DeepSeek-V4 Pro, DeepSeek-V4 Pro edges out in overall capabilities according to the AI Mastery Index. However, for cost-sensitive workloads, DeepSeek-V4 Pro offers a more economical API at $1.32 per 1M tokens. Your choice should depend heavily on whether you prioritize raw reasoning (MMLU) or scalable deployment economics.