Is GPT-5.4 mini or Grok 4 cheaper?

GPT-5.4 mini is cheaper on output tokens ($4.50 vs $15.00 per 1M).

Which has the larger context window, GPT-5.4 mini or Grok 4?

GPT-5.4 mini has the larger context window (400K tokens).

GPT-5.4 mini vs Grok 4

GPT-5.4 mini is cheaper on output tokens, while GPT-5.4 mini offers a larger context window. Choose GPT-5.4 mini or Grok 4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.4 mini	Grok 4
Provider	FastRouter	FastRouter
Input / 1M tokens	$0.75	$3.00
Output / 1M tokens	$4.50	$15.00
Context window	400K	256K
Parameters	—	3T
Open weights	No	No
Released	Mar 2026	Jul 2025

GPT-5.4 mini details →Grok 4 details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.