DeepSeek V3 vs Grok 4.3

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.	Grok 4.3 xAI's flagship API model, billed as its most intelligent and fastest, with strong agentic tool calling.
Category	model	model
Vendor type	open source	commercial
Pricing	free	usage
Strengths	+ Open weights + Very low inference cost + Strong reasoning benchmarks	+ Aggressive pricing ($1.25 input / $2.50 output per million tokens) for a 1M-context flagship + Vendor-reported leadership in agentic tool calling and instruction following + Companion multi-agent variant (grok-4.20-multi-agent) targeted at agentic workloads
Tradeoffs	− Geopolitical considerations for some enterprises	− Stated knowledge cutoff of November 2024 is older than competing flagships − Rapid model churn; xAI retired eight legacy models (including grok-3) in May 2026, so pinned integrations need active migration
Used in stacks	0	0