Is GPT-5 mini cheaper than Grok 4?

GPT-5 mini is cheaper, at $0.45 per 1M input tokens versus $5.00.

Which has the larger context window, GPT-5 mini or Grok 4?

Grok 4 has the larger context window at 256K tokens.

GPT-5 mini is cheaper on input ($0.45 vs $5.00 per 1M tokens), Grok 4 has the larger context window (256K).

Spec	GPT-5 mini	Grok 4
Provider	OpenAI	xAI
Modality	Text + Vision	Text + Vision
Context window	128K	256Kbest
Input / 1M	$0.45best	$5.00
Output / 1M	$1.80best	$15.00
Released	Jan 2026	Dec 2025
Best for	Chat / Assistant, High-volume / cheap, Image / Vision	Chat / Assistant, Code generation, Image / Vision

Is GPT-5 mini cheaper than Grok 4?: GPT-5 mini is cheaper, at $0.45 per 1M input tokens versus $5.00.
Which has the larger context window, GPT-5 mini or Grok 4?: Grok 4 has the larger context window at 256K tokens.