> GPT-4.1 is a closed AI model from OpenAI, released 14 Apr 2025. Index score 125 (GPT-4 = 100), rank 128 of 229 ranked models. API price $2.0 in / $8.0 out per million tokens, 1.05M context.

[Models](https://themodelindex.org/models/) /[OpenAI](https://themodelindex.org/labs/openai/)

# GPT-4.1

OpenAI

Released 14 Apr 2025

Closed

Flagship

[Compare](https://themodelindex.org/compare/gpt-4-1-vs-qwen3/) [Announcement](https://en.wikipedia.org/wiki/GPT-4.1)

125114–136

Index score

#128 of 229 models

5/ 8

Core tests taken

4 of 6 areas · plus 14 anchor tests

−16

Versus the frontier at release

best then: Gemini 2.5 Pro

Replaced by [GPT-5](https://themodelindex.org/models/gpt-5/)

$2.0/ $8.0

Price per million tokens

input / output, list price

1.05M

Context window

tokens it reads at once

## Where it sits · on the frontier

_Chart: Model Index score of every scored model since late 2022, with the best closed and best open model over time_

o1 reached this score 4 months earlier.

## Test results · by area · tick = best by any model

Show 12 anchor tests

Reasoning & knowledge

evidence

GPQA Diamond

67%

Humanity's Last Exam

5%

Maths

evidence

FrontierMath T1-3

6%

Coding

evidence

SWE-bench Verified

49%

Terminal-Bench

no result

Agents

evidence

APEX-Agents

no result

Novel problems

evidence

ARC-AGI-2

0%

Long tasks

no evidence yet

METR time horizon

no result

Independent results from the Epoch AI benchmarking hub, best reasoning setting. The core tests are shown here; anchor tests also inform the score and can be shown above.

## What others say · rank on each leaderboard

The Model Index

independent tests, our method

#128

of 219 · 125

Epoch Capabilities Index

overall capability from many benchmarks

#115

of 239 · 136.8

Further left is better. Leaderboards measure different things: LMArena is people voting blind between two answers, the others are test scores. Click any row for the source.

## Best at · top three among current models

Replaced by GPT-5; it no longer leads any category among current models.

Where this model places in the top three of today's models, on category leaderboards and on our core tests.

## Where to use it · prices checked 1 Oct 2026

#### From the lab

ChatGPT

app · subscription

↗

OpenAI API

API

↗

#### API providers · 2 · per million tokens, in / out

A

Azure

$2.2 / $8.8

cheapest

O

OpenAI

$2.0 / $8.0

↗

Provider prices come from OpenRouter's live listing; going direct to a provider can differ. Subscriptions are the lab's own apps.

## Facts and sources

Released

14 Apr 2025

Announcement

[en.wikipedia.org ↗](https://en.wikipedia.org/wiki/GPT-4.1)

Release entry

GPT-4.1

Scored as

GPT-4.1

Artificial Analysis index

–

Output speed

–

Hugging Face

closed weights

## OpenAI releases · around this one

o3-mini

Closed

31 JAN 2025

index 132

GPT-4.5

Closed

27 FEB 2025

index 124

GPT-4.1

Closed

14 APR 2025

index 125

o3

Closed

16 APR 2025

index 147

o4-mini

Closed

16 APR 2025

index 143

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Source: https://themodelindex.org/models/gpt-4-1/ · The Model Index · data as of 2026-10-01