LIVE INTELLIGENCE · part of the Xentir AI Index

GPT-4.1 mini vs o1-preview

Name: GPT-4.1 mini vs o1-preview — benchmark results
Creator: Epoch AI
License: https://creativecommons.org/licenses/by/4.0/

GPT-4.1 mini · OpenAI, released 2025-04-14
o1-preview · OpenAI, released 2024-09-12

“Epoch AI, 'AI Benchmarking Hub'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks' [online resource].” · epoch.ai/benchmarks · Licensed CC BY 4.0 · data last verified 2026-09-09 · Methodology · Data Sources

GPT-4.1 mini leads on more of the 4 benchmarks where both are measured — GPT-4.1 mini on 4. The remaining 5 of 9 tracked benchmarks cannot be compared: 3 have a result for only one of the two models, 2 for neither. Nothing on this page is estimated to fill those in.

Head-to-head

Measured on 4 of 9 tracked benchmarks for both models — GPT-4.1 mini leads on 4.

Benchmark	GPT-4.1 mini	o1-preview	Leads
Epoch Capabilities Index (ECI)	135.0	134.8	GPT-4.1 mini
SWE-bench Verified	Not measured	Not measured	Not measured on both
GPQA Diamond	0.658	0.503	GPT-4.1 mini
MATH Level 5	0.873	0.816	GPT-4.1 mini
OTIS Mock AIME 2024-2025	0.447	0.311	GPT-4.1 mini
FrontierMath	0.045	Not measured	Comparison unavailable — o1-preview has no published result
FrontierMath Tier 4	Not measured	Not measured	Not measured on both
SimpleQA Verified	0.127	Not measured	Comparison unavailable — o1-preview has no published result
Chess Puzzles	0.070	Not measured	Comparison unavailable — o1-preview has no published result

Benchmark results measure specific tasks and should not be treated as a universal measure of model quality. A model with no row here for a benchmark has not been measured on it — that is left blank, never estimated.

What remains uncertain

o1-preview has no published result on Chess Puzzles, FrontierMath, SimpleQA Verified.
2 tracked benchmarks have no published result for either model.

A missing result means Xentir has not found one published by the source it cites, not that the model performs badly. See Data Sources.

Reference price

Per 1M tokens	GPT-4.1 mini	o1-preview
Output	$1.60	—

List price as published by the vendor. Xentir does not verify negotiated or enterprise rates, and price is not a measure of capability — see Data Sources.

Full profiles

GPT-4.1 mini → · o1-preview → · the full AI Model Rankings table