Is GPT-5.1-Codex-Max or Grok 4 cheaper?

GPT-5.1-Codex-Max is cheaper on output tokens ($9.00 vs $15.00 per 1M).

Which has the larger context window, GPT-5.1-Codex-Max or Grok 4?

GPT-5.1-Codex-Max has the larger context window (400K tokens).

GPT-5.1-Codex-Max vs Grok 4

GPT-5.1-Codex-Max is cheaper on output tokens, while GPT-5.1-Codex-Max offers a larger context window. Choose GPT-5.1-Codex-Max or Grok 4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.1-Codex-Max	Grok 4
Provider	Requesty	Requesty
Input / 1M tokens	$1.10	$3.00
Output / 1M tokens	$9.00	$15.00
Context window	400K	256K
Parameters	—	3T
Open weights	No	No
Released	Nov 2025	Sep 2025

GPT-5.1-Codex-Max details →Grok 4 details →

FAQ

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