Llama 3.1 405B vs DeepSeek V3

Side-by-side comparison of specifications, capabilities, and pricing.

	Llama 3.1 405B AI at Meta	DeepSeek V3 DeepSeek
Released	2024-07-23	2024-12-26
Context window	128K	64k
Parameters	405B	671B
Architecture	decoder only	mixture of experts
License	Open Source	Open Source
Knowledge cutoff	—	2024-04
Capabilities
Vision
Multimodal
Reasoning
Function calling
Tool use
Structured Outputs
Code execution
Availability
Providers	—	DeepInfra Fireworks AI DeepSeek Platform Microsoft Foundry OpenRouter NVIDIA NIM AWS Bedrock Together AI Bitdeer AI SiliconFlow Replicate API

Benchmarks

HellaSwag95.895.7HumanEval89.085.5Massive Multitask Language Understanding88.688.5Chatbot Arena1228.01302.0Google-Proof Q&A51.5—LiveCodeBench—49.6Aider Polyglot—48.4BigCodeBench—50.0MMLU PRO—75.9

Full Llama 3.1 405B specs →Full DeepSeek V3 specs →