DeepSeek V3 vs DeepSeek V4

Pick two tools from the same category to compare side-by-side.

	DeepSeek V3 Open-weights model with strong reasoning at very low inference cost.	DeepSeek V4 DeepSeek's V4 generation of open-weight MoE models with 1M-token context and agent-focused reasoning modes.
Category	model	model
Vendor type	open source	open source
Pricing	free	free
Strengths	+ Open weights + Very low inference cost + Strong reasoning benchmarks	+ MIT-licensed open weights for both Pro and Flash variants + 1M-token context window + Selectable reasoning effort modes (non-think plus two thinking modes) + Sparse MoE design keeps activated parameters low relative to total size
Tradeoffs	− Geopolitical considerations for some enterprises	− Branded as a preview release on deepseek.com as of June 2026 − V4-Pro's scale makes self-hosting impractical without large GPU clusters
Used in stacks	0	0