Alibaba · Strong multilingual support

Qwen 2.5 1.5B on iPhone

  • Balanced

Qwen 2.5 1.5B is Alibaba’s mid-size open model, and in Priobs it is the go-to for chatting in more than one language. It runs on your iPhone with no internet after the download.

How to install it

Free download · iPhone, iOS 26.0 or later

Specifications

Company
Alibaba
Parameters
1.5B
Download size
878 MB
Minimum RAM
1.2 GB
Category
Balanced
Tools
Not supported
License
Apache 2.0
Format
4-bit quantized, MLX

Numbers come straight from the model catalogue inside the app. Qwen 2.5 1.5B and its licence belong to Alibaba.

About Qwen 2.5 1.5B

What is Qwen 2.5 1.5B?

Qwen 2.5 1.5B is the step up from Qwen 2.5 0.5B: 1.5 billion parameters, trained with a strong focus on multilingual data. In Priobs it runs as a 4-bit quantized MLX build that stays fast and light.

Who made it

Alibaba builds Qwen as an open model family in many sizes, with multilingual skill as a core strength. Qwen 2.5 1.5B ships under the Apache 2.0 licence.

What it’s good at on iPhone

Qwen 2.5 1.5B is the pick for strong multilingual support:

  • Chatting in languages beyond English, more fluently than the 0.5B model
  • Translating and explaining text across languages
  • Everyday chat with more depth than the smallest models
  • A light footprint that fits most iPhones

Qwen 2.5 1.5B does not use Priobs tools. For calendar, reminders or Health, pick a model marked Tools.

It sits between Qwen 2.5 0.5B and bigger models like Llama 3.2 3B: faster and smaller than Llama, with a multilingual edge.

Which iPhones can run it

Qwen 2.5 1.5B needs at least 1.2 GB of memory. Priobs checks your iPhone, hides models it does not have the memory for, and warns you if a model is close to the limit and may be unstable. Every iPhone that runs iOS 26 has more than that.

Setup

How to get it in Priobs.

One download over Wi-Fi and you are offline-ready for good.

  1. Open Priobs and go to the Model Library.

  2. Find Qwen 2.5 1.5B and tap Download (878 MB).

  3. Select it as your active model and start chatting offline.

FAQ

Qwen 2.5 1.5B, answered.

General Priobs questions

Is Qwen 2.5 1.5B better than Qwen 2.5 0.5B?

It gives more nuanced answers and handles other languages better, for a bigger download and a bit more memory. If speed and size matter most, stay with 0.5B.

What languages does Qwen 2.5 1.5B handle well?

Qwen models are trained on broad multilingual data. That is why Priobs recommends this model for multilingual chat over the other small options.

Does Qwen 2.5 1.5B support tools?

No. If you want tools plus good multilingual chat, try Qwen 3 1.7B, which supports tools and thinks before it answers.

Is Qwen 2.5 1.5B good for writing long documents?

For shorter chat and text tasks, yes. For long, complex writing, Llama 3.2 3B or Qwen 3 4B do better.

Does Qwen 2.5 1.5B need an internet connection?

Only for the download. After that it runs fully offline, like every model in Priobs.

Other models

You can keep several installed at once.

Switching models takes one tap. A common setup: a small, fast model for quick questions and a bigger one for anything that needs more depth.

Compare every modelBest local LLMs for iPhone in 2026How to run an LLM on iPhone

Run Qwen 2.5 1.5B on your own iPhone.

Priobs is free to download with a free trial. Pick a model, and every answer is generated on your iPhone.

Free download · iPhone, iOS 26.0 or later · Cancel any time in App Store settings