> GPT-5 is a closed AI model from OpenAI, released 7 Aug 2025. Index score 154 (GPT-4 = 100), rank 49 of 229 ranked models. API price $1.25 in / $10 out per million tokens, 400K context.

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# GPT-5

OpenAI

Released 7 Aug 2025

Closed

Flagship

Date verified

[Compare](https://themodelindex.org/compare/gpt-5-vs-qwen3-235b-a22b-thinking-jul-2025/) [Announcement](https://openai.com/index/introducing-gpt-5/)

154143–165

Index score

#49 of 229 models

Pro mode: 154 · $15 / $120

7/ 8

Core tests taken

5 of 6 areas · plus 23 anchor tests

Frontier

Versus the frontier at release

set or matched the record

Replaced by [GPT-5.1](https://themodelindex.org/models/gpt-5-1/)

$1.25/ $10

Price per million tokens

input / output, list price

400K

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_

Among the first models to reach this score.

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

Show 17 anchor tests

Reasoning & knowledge

evidence

GPQA Diamond

86%

Humanity's Last Exam

25%

Maths

evidence

FrontierMath T1-3

55%

Coding

evidence

SWE-bench Verified

74%

Terminal-Bench

50%

Agents

evidence

APEX-Agents

no result

Novel problems

evidence

ARC-AGI-2

10%

Long tasks

evidence

METR time horizon

3.4 h

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

#49

of 219 · 154

Epoch Capabilities Index

overall capability from many benchmarks

#50

of 239 · 150

LMArena · Text

overall chat quality, judged by people

#91

of 388 · 1434

LMArena · Maths

maths questions in chat

#92

of 373 · 1434

LMArena · Coding

coding questions in chat

#109

of 383 · 1470

LMArena · Creative writing

creative writing

#112

of 386 · 1390

LMArena · Vision

understanding images

#61

of 149 · 1225

LMArena · WebDev

building web apps and front ends

#70

of 123 · 1417

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

3rd

SWE-bench Verified

Epoch AI · independent

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

$1.38 / $11

cheapest

O

OpenAI

$1.25 / $10

↗

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

7 Aug 2025

Announcement

[openai.com ↗](https://openai.com/index/introducing-gpt-5/)

Release entry

GPT-5

Scored as

GPT-5

Artificial Analysis index

–

Pro mode

index 154 · $15 / $120 per M

Output speed

–

Hugging Face

closed weights

## OpenAI releases · around this one

gpt-oss-120b

Open

5 AUG 2025

index 131

gpt-oss-20b

Open

5 AUG 2025

index 128

GPT-5

Closed

7 AUG 2025

index 154

GPT-5-Codex

Closed

15 SEP 2025

GPT-5.1

Closed

12 NOV 2025

index 153

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Source: https://themodelindex.org/models/gpt-5/ · The Model Index · data as of 2026-10-01