Llama 4 (405B) vs DeepSeek-V4
Head-to-head technical comparison of intelligence, capabilities, and API pricing.
Llama 4 (405B)
Meta
AI Mastery Index90.5
LMSYS Arena1285
Technical (MMLU-Pro)90.5%
Cost per 1M Tokens$0
DeepSeek-V4
DeepSeek
AI Mastery Index91.8
LMSYS Arena1290
Technical (MMLU-Pro)91.8%
Cost per 1M Tokens$0.14
Architect's Verdict
When comparing Llama 4 (405B) and DeepSeek-V4, DeepSeek-V4 edges out in overall capabilities according to the AI Mastery Index. However, for cost-sensitive workloads, Llama 4 (405B) 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.