Qwen3 4B

Name: Qwen3 4B
Author: Alibaba Cloud

Free right now Small

ReasoningLong contextOpen weights

Qwen3 4B is a language model with 4B parameters from Alibaba Cloud. It is currently free at 1 provider with up to 262K tokens of context. The model supports step-by-step reasoning. Its weights are open, so it can also run locally.

Developer: Alibaba Cloud
Parameters: 4B
Context: 262K tokens
Type: Text
License: Open weights

Where to use Qwen3 4B for free

Each row is a separate free endpoint with its own limits.

Provider	Context	Limit	Card
Together AI `Qwen/Qwen3-4B-Instruct-2507`	262K	Fair use (depends on server load)	—	Open

Quick start

curl https://api.together.xyz/v1/chat/completions \
  -H "Authorization: Bearer $TOGETHER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "Qwen/Qwen3-4B-Instruct-2507",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

from openai import OpenAI

client = OpenAI(
    base_url="https://api.together.xyz/v1",
    api_key="YOUR_TOGETHER_API_KEY",
)
reply = client.chat.completions.create(
    model="Qwen/Qwen3-4B-Instruct-2507",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(reply.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.together.xyz/v1",
  apiKey: process.env.TOGETHER_API_KEY,
});
const reply = await client.chat.completions.create({
  model: "Qwen/Qwen3-4B-Instruct-2507",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(reply.choices[0].message.content);

Example for Together AI. Any OpenAI-compatible client works: Cursor, Cline, OpenCode, Open WebUI.