Is Claude Sonnet 5 cheaper than DeepSeek V4?

DeepSeek V4 is cheaper, at $0.40 per 1M input tokens versus $3.00.

Which has the larger context window, Claude Sonnet 5 or DeepSeek V4?

Claude Sonnet 5 has the larger context window at 400K tokens.

DeepSeek V4 is cheaper on input ($0.40 vs $3.00 per 1M tokens), Claude Sonnet 5 has the larger context window (400K).

Spec	Claude Sonnet 5	DeepSeek V4
Provider	Anthropic	DeepSeek
Modality	Text + Vision	Text
Context window	400Kbest	256K
Input / 1M	$3.00	$0.40best
Output / 1M	$15.00	$1.20best
Released	Feb 2026	Jan 2026
Best for	Chat / Assistant, Code generation, Image / Vision	Code generation, Chat / Assistant, High-volume / cheap

Is Claude Sonnet 5 cheaper than DeepSeek V4?: DeepSeek V4 is cheaper, at $0.40 per 1M input tokens versus $3.00.
Which has the larger context window, Claude Sonnet 5 or DeepSeek V4?: Claude Sonnet 5 has the larger context window at 400K tokens.