DeepSeek-V4 vs GPT-4o

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

DeepSeek-V4

DeepSeek

AI Mastery Index91.8

LMSYS Arena1290

Technical (MMLU-Pro)91.8%

Cost per 1M Tokens$0.14

GPT-4o

OpenAI

AI Mastery Index87.2

LMSYS Arena1287

Technical (MMLU-Pro)88.7%

Cost per 1M Tokens$5

Architect's Verdict

When comparing DeepSeek-V4 and GPT-4o, DeepSeek-V4 edges out in overall capabilities according to the AI Mastery Index. However, for cost-sensitive workloads, DeepSeek-V4 offers a more economical API at $0.14 per 1M tokens. Your choice should depend heavily on whether you prioritize raw reasoning (MMLU) or scalable deployment economics.