Is DeepSeek V4 cheaper than GPT-5 nano?

GPT-5 nano is cheaper, at $0.15 per 1M input tokens versus $0.40.

Which has the larger context window, DeepSeek V4 or GPT-5 nano?

DeepSeek V4 has the larger context window at 256K tokens.

Name: DeepSeek V4
Brand: DeepSeek
Price: 0.4 USD
Availability: InStock

GPT-5 nano is cheaper on input ($0.15 vs $0.40 per 1M tokens), DeepSeek V4 has the larger context window (256K).

Spec	DeepSeek V4	GPT-5 nano
Provider	DeepSeek	OpenAI
Modality	Text	Text
Context window	256Kbest	128K
Input / 1M	$0.40	$0.15best
Output / 1M	$1.20	$0.60best
Released	Jan 2026	Jan 2026
Best for	Code generation, Chat / Assistant, High-volume / cheap	High-volume / cheap, Chat / Assistant

Is DeepSeek V4 cheaper than GPT-5 nano?: GPT-5 nano is cheaper, at $0.15 per 1M input tokens versus $0.40.
Which has the larger context window, DeepSeek V4 or GPT-5 nano?: DeepSeek V4 has the larger context window at 256K tokens.