Qwen3.5 4B API & Playground

Base model of 4B model from Qwen 3.5 series

Qwen3.5 4B API Features

On-demand Deployment

On-demand deployments allow you to use Qwen3.5 4B on dedicated GPUs with Fireworks' high-performance serving stack with high reliability and no rate limits.

Metadata

State

Ready

Created on

9 APR, 2026

Kind

Base model

Provider

Qwen

Huggingface

Qwen/Qwen3.5-4B

Specifications

Calibrated

Mixture-of-Experts

Parameters

5.17B

Supporting Functionality

Fine-tuning

Not Supported

Serverless

Not Supported

Context Length

262k tokens

Function Calling

Not Supported

Embeddings

Not Supported

Rerankers

Not Supported

Supporting image input

Not Supported