> Qwen1.5 is an open-weights AI model from Alibaba, released 4 Feb 2024.

[Models](https://themodelindex.org/models/) /[Alibaba](https://themodelindex.org/labs/alibaba/)

# Qwen1.5

Alibaba

Released 4 Feb 2024

Open

Date verified

[Compare](https://themodelindex.org/compare/qwen1-5-vs-gpt-4-turbo/) [Announcement](https://qwenlm.github.io/blog/qwen1.5/)

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Index score

Not yet evaluated independently

1/ 8

Core tests taken

1 of 6 areas · plus 1 anchor tests

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Versus the frontier at release

Replaced by [Qwen2.5-32B](https://themodelindex.org/models/qwen2-5-32b/)

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Price per million tokens

no public API price found

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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_

GPT-4 reached this score 11 months earlier.

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

Show 1 anchor tests

Reasoning & knowledge

evidence

GPQA Diamond

31%

Humanity's Last Exam

no result

Maths

no evidence yet

FrontierMath T1-3

no result

Coding

no evidence yet

SWE-bench Verified

no result

Terminal-Bench

no result

Agents

no evidence yet

APEX-Agents

no result

Novel problems

no evidence yet

ARC-AGI-2

no result

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

LMArena · Coding

coding questions in chat

#309

of 383 · 1262

LMArena · Maths

maths questions in chat

#301

of 373 · 1201

LMArena · Text

overall chat quality, judged by people

#319

of 388 · 1204

LMArena · Creative writing

creative writing

#346

of 386 · 1131

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 Qwen2.5-32B; 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.

## Facts and sources

Released

4 Feb 2024

Announcement

[qwenlm.github.io ↗](https://qwenlm.github.io/blog/qwen1.5/)

Release entry

Qwen1.5

Scored as

Qwen1.5-32B

Artificial Analysis index

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Output speed

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Hugging Face

not linked

## Alibaba releases · around this one

Qwen-7B

Open

3 AUG 2023

Qwen-72B

Open

30 NOV 2023

Qwen1.5

Open

4 FEB 2024

Qwen2

Open

7 JUN 2024

index 103

Qwen2.5

Open

19 SEP 2024

index 110

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Source: https://themodelindex.org/models/qwen1-5/ · The Model Index · data as of 2026-10-01