GPT-4.1 | Epoch AI

ECI#137

136

OpenAI

Apr. 14, 2025

Closed weights

GPT-4.1 is a closed-weights model from OpenAI, released April 14, 2025. It has an ECI score of 136 and ranks 137th of 240 tracked models. At the time of its release, it ranked 9th of 105 tracked models.

GPT-4.1 vs select alternatives

Domain	Benchmark	GPT-4.1 OpenAI Apr. 14, 2025 Closed weights	o1-mini OpenAI Sep. 12, 2024 Closed weights	GPT-4.5 OpenAI Feb. 27, 2025 Closed weights	Grok 3 xAI Apr. 9, 2025 Closed weights
	ECI scoreBest score 173	136	135	136	137
	Ranking	#137	#140	#136	#133
Conceptual reasoning	SimpleBenchBest score 95%	27%	18%	35%	36%
	ARC-AGI-2Best score 95%	0%	1%	1%	0%
	ARC-AGI-1Best score 99%	6%	14%	10%	6%
Mathematics	MATH Level 5Best score 98%	83%	89%	79%	89%
	OTIS Mock AIME 2024-2025Best score 100%	38%	47%	38%	56%
Science	Humanity's Last ExamBest score 55%	5%	n/a	5%	n/a
	GPQA DiamondBest score 97%	67%	62%	69%	68%
Software engineering	Aider PolyglotBest score 88%	52%	33%	45%	53%
	WeirdML (v2)Best score 94%	39%	36%	39%	37%

Model metadata

General
Organization	OpenAI
Release date	Apr. 14, 2025
Model accessibility	Closed weights
Country	United States of America
Knowledge cutoff	2024-05-31
Provider notes	Introducing GPT-4.1 in the API: A new series of GPT models featuring major improvements on coding, instruction following, and long context—plus our first-ever nano model.

Pricing
Input price	$2 / 1M tokens
Output price	$8 / 1M tokens

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