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NovitaAI

Qwen3 4B API

NovitaAI
About

Build advanced reasoning agents with Qwen3 4B, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.03/1M input and $0.03/1M output tokens, open weights architecture. Access Qwen3 4B via the NovitaAI API with up to 20K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
Structured Output
No
Tool Use
No
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
128K

Tokens

Input Limit
128K

Tokens

Max Output
20K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.03
Output
$0.03
Frequently Asked Questions

Qwen3 4B by NovitaAI costs $0.03 per 1M input tokens and $0.03 per 1M output tokens.

Model Details
ID
qwen/qwen3-4b-fp8
Provider
NovitaAI
Family
Release Date
Apr 29, 2025
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
NOVITA_API_KEY
API Base URL
https://api.novita.ai/openai
Documentation