Grok 4.1 | Epoch AI

ECI

N/A

xAI

Nov. 17, 2025

Closed weights

Grok 4.1 is a closed-weights model from xAI, released November 17, 2025.

Grok 4.1 vs select alternatives

Domain	Benchmark	Grok 4.1 xAI Nov. 17, 2025 Closed weights	GPT-5 Pro OpenAI Oct. 7, 2025 Closed weights	Claude Sonnet 4.5 Anthropic Sep. 29, 2025 Closed weights	Kimi K2 Thinking Moonshot Nov. 6, 2025 Open weights
Software engineering	Text Arena (Coding)Best score 1820	1211	—	1391	1337
	CybenchBest score 93%	39%	n/a	60%	n/a

Model metadata

General
Organization	xAI
Release date	Nov. 17, 2025
Model accessibility	Closed weights
Country	United States of America
Knowledge cutoff	Unknown
Provider notes	Grok 4.1

Pricing
Input price	—
Output price	—

Training
Parameters	Unknown
Training compute	Unknown
Training hardware	Unknown
Training time	Unknown
Training dataset size	Unknown