GPT-5.1 vs Grok 4.1

GPT-5.1 costs 43% less at typical usage ($3.44 vs $6.00 per 1M tokens). GPT-5.1 scores higher on 11 of 11 tasks.

Spec	GPT-5.1	Grok 4.1
Input /1M	$1.25	$3.00
Output /1M	$10.0	$15.0
Typical /1M	$3.44	$6.00
Context window	400k	256k
Speed	Brisk	Brisk
Privacy	Standard	Standard
Open weights	No	No

GPT-5.1

Steady since we started tracking (Jul 13, 2026)

Grok 4.1

Steady since we started tracking (Jul 13, 2026)

Quality by task

Coding94/92

Agents93/91

Reasoning96/95

Writing92/90

Chat93/91

Classify88/86

Extract89/87

Summarize91/89

Translate90/87

Vision94/90

General94/92

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Prices are list $/1M tokens, hand-maintained from public provider pricing. Task scores are benchmark-informed 0-100 estimates, not gospel — validate on your own evals before moving production traffic. Not affiliated with any model provider.