Is DeepSeek V4 cheaper than GPT-5 mini?

DeepSeek V4 is cheaper, at $0.40 per 1M input tokens versus $0.45.

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

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

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

DeepSeek V4 is cheaper on input ($0.40 vs $0.45 per 1M tokens), DeepSeek V4 has the larger context window (256K).

Spec	DeepSeek V4	GPT-5 mini
Provider	DeepSeek	OpenAI
Modality	Text	Text + Vision
Context window	256Kbest	128K
Input / 1M	$0.40best	$0.45
Output / 1M	$1.20best	$1.80
Released	Jan 2026	Jan 2026
Best for	Code generation, Chat / Assistant, High-volume / cheap	Chat / Assistant, High-volume / cheap, Image / Vision

Is DeepSeek V4 cheaper than GPT-5 mini?: DeepSeek V4 is cheaper, at $0.40 per 1M input tokens versus $0.45.
Which has the larger context window, DeepSeek V4 or GPT-5 mini?: DeepSeek V4 has the larger context window at 256K tokens.