Qwen 1.5 (4B) API

wen 1.5 (4B) API delivers efficient, high-quality dialogue with 4 billion parameters for streamlined conversational AI applications.

Modalities
TextText
Model type
Chat
Status
Deprecated

Qwen 1.5 (4B) overview

Qwen 1.5 (4B) specs

Developer
Alibaba Cloud
Input
Text
Output
Text
API
OpenAI-compatible, base URL https://api.aimlapi.com/v1

Qwen 1.5 (4B) Description

Qwen 1.5 (4B) is a streamlined conversational AI model designed to deliver high-quality interactions with efficiency. With 4 billion parameters, it offers a robust framework for understanding and generating natural language, enabling smooth and coherent dialogues. This model is an excellent choice for organizations seeking to implement effective AI-driven communication without the need for extensive computational resources.

Use Cases for the Model

Qwen 1.5 (4B) is versatile and can be deployed in various settings, including customer support, virtual assistance, and interactive media. Its ability to quickly process and respond to queries makes it suitable for fast-paced environments where timely and accurate communication is critical. Additionally, its scalable nature allows it to handle varying volumes of interactions, from small-scale engagements to large, high-traffic platforms.

How does it compare to other models?

In comparison to larger models, Qwen 1.5 (4B) offers a more resource-efficient solution while still maintaining a high level of conversational quality. It is designed to perform optimally in environments where computational efficiency is as important as the quality of interaction, providing a balanced solution for many practical applications.

Tips for Maximizing Interaction Quality

To get the most out of Qwen 1.5 (4B), clear and concise prompts are crucial. Enhancing interaction quality also involves continuous training and fine-tuning based on specific use cases and user feedback, which helps the model better understand and respond to various conversational contexts.

Optimizing for Different Scenarios

The adaptability of Qwen 1.5 (4B) makes it ideal for a wide range of applications. It can be customized to excel in different conversational domains, from informal chats to complex technical support. By fine-tuning the model to specific interaction styles and content, Qwen 1.5 (4B) can effectively meet the unique demands of each application, ensuring a consistently high-quality conversational experience.

Use cases

  • General language understanding and generation
  • Text completion and generation
  • Code generation and understanding
  • Applications requiring long context handling

Capabilities

  • Function calling
  • Streaming
  • Structured outputs

Qwen 1.5 (4B) API pricing

Qwen 1.5 (4B) pricing in US dollars
UsagePriceUnit
Input$0.1051M tokens
Output$0.1051M tokens

Qwen 1.5 (4B) is deprecated on AI/ML API. The rates apply to existing integrations; the models below are current alternatives.

Prices from the AI/ML API price list, checked on Nov 4, 2026.

Qwen 1.5 (4B) vs other models: token prices

AI/ML API input and output rates for 5 models, per million tokens.

AI/ML API model prices in USD per million tokens
ModelInputOutput
Qwen 1.5 (4B)$0.105$0.105
Qwen3.8 Omni Flash$0.15$0.47
Qwen3.8-Flash$0.16$0.47
Qwen 3.8 27B$0.4761$3.39
Qwen3.8 Max Prime$4.23$12.7

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