GPT-4.5 | Epoch AI

ECI#130

137

OpenAI

Feb. 27, 2025

Closed weights

GPT-4.5 is a closed-weights model from OpenAI, released February 27, 2025. It has an ECI score of 137 and ranks 130th of 253 tracked models. At the time of its release, it ranked 6th of 113 tracked models.

GPT-4.5 vs select alternatives

Domain	Benchmark	GPT-4.5 OpenAI Feb. 27, 2025 Closed weights	o1-mini OpenAI Sep. 12, 2024 Closed weights	o3-mini OpenAI Jan. 31, 2025 Closed weights	DeepSeek-V3 (Mar 2025) DeepSeek Mar. 24, 2025 Open weights
	ECI scoreBest score 167	137	136	140	136
	Ranking	#130	#134	#111	#133
Conceptual reasoning	SimpleBenchBest score 82%	35%	18%	23%	27%
	ARC-AGI-2Best score 95%	1%	1%	3%	n/a
	ARC-AGI-1Best score 99%	10%	14%	35%	n/a
Mathematics	MATH Level 5Best score 98%	79%	89%	96%	76%
	OTIS Mock AIME 2024-2025Best score 100%	38%	47%	77%	38%
Science	GPQA DiamondBest score 96%	69%	62%	77%	68%
Software engineering	Aider PolyglotBest score 88%	45%	33%	60%	55%
	CybenchBest score 93%	18%	10%	23%	n/a
Other	LiveBenchBest score 82%	69%	58%	76%	67%

Model metadata

General
Organization	OpenAI
Release date	Feb. 27, 2025
Model accessibility	Closed weights
Country	United States of America
Knowledge cutoff	2023-10-01
Provider notes	Introducing GPT-4.5

Pricing
Input price	$75 / 1M tokens
Output price	$150 / 1M tokens

Training
Parameters	Unknown
Training compute	3.8e26 FLOP
Training hardware	Unknown
Training time	125 days
Training dataset size	Unknown