qwen3-4b:free
completions
Qwen3-4B is a 4 billion parameter dense language model from the Qwen3 series, designed to support both general-purpose and reasoning-intensive tasks. It introduces a dual-mode architecture—thinking and non-thinking—allowing dynamic switching between high-precision logical reasoning and efficient dialogue generation. This makes it well-suited for multi-turn chat, instruction following, and complex agent workflows.
Input:Free
Output:Free
Context:40960 tokens
tools
text
text
Access qwen3-4b:free through LangDB AI Gateway
Recommended
Integrate with qwen's qwen3-4b:free and 250+ other models through a unified API. Monitor usage, control costs, and enhance security.
Unified API
Cost Optimization
Enterprise Security
Get Started Now
Free tier available • No credit card required
Instant Setup
99.9% Uptime
10,000+Monthly Requests
Code Example
Configuration
Base URL
API Keys
Headers
Project ID in header
X-Run-Id
X-Thread-Id
Model Parameters
12 availablefrequency_penalty
-202
include_reasoning
max_tokens
presence_penalty
-201.999
response_format
stop
structured_outputs
temperature
012
tool_choice
tools
top_k
top_p
011
Additional Configuration
Tools
Guards
User:
Id:
Name:
Tags:
Publicly Shared Threads0
Discover shared experiences
Shared threads will appear here, showcasing real-world applications and insights from the community. Check back soon for updates!
Share your threads to help others
Popular Models10
gpt-4.1-miniopenaiGPT-4.1 mini provides a balance between intelligence, speed, and cost that makes it an attractive model for many use cases.Input:$0.4 / 1M tokensOutput:$1.6 / 1M tokensContext:1047576 tokenstoolstextimagetext
claude-sonnet-4anthropicOur high-performance model with exceptional reasoning and efficiencyInput:$3 / 1M tokensOutput:$15 / 1M tokensContext:200K tokenstoolstextimagetext- claude-opus-4anthropicOur most capable and intelligent model yet. Claude Opus 4 sets new standards in complex reasoning and advanced codingInput:$15 / 1M tokensOutput:$75 / 1M tokensContext:200K tokenstoolstextimagetext
- gpt-4.1openaiGPT-4.1 is OpenAI's flagship model for complex tasks. It is well suited for problem solving across domains.Input:$2 / 1M tokensOutput:$8 / 1M tokensContext:1047576 tokenstoolstextimagetext
gemini-2.5-pro-previewgeminiGemini 2.5 Pro Experimental is Google's state-of-the-art thinking model, capable of reasoning over complex problems in code, math, and STEM, as well as analyzing large datasets, codebases, and documents using long context.Input:$1.25 / 1M tokensOutput:$10 / 1M tokensContext:1M tokenstoolstextimageaudiovideotext
grok-4xaiGrok 4 is the latest and greatest flagship model, offering unparalleled performance in natural language, math and reasoning - the perfect jack of all trades.Input:$3 / 1M tokensOutput:$15 / 1M tokensContext:256K tokenstoolstexttext- gemini-2.5-flash-previewgeminiGoogle's best model in terms of price-performance, offering well-rounded capabilities. Gemini 2.5 Flash rate limits are more restricted since it is an experimental / preview model.Input:$0.15 / 1M tokensOutput:$0.6 / 1M tokensContext:1M tokenstoolstextimageaudiovideotext
- gemini-2.0-flashgeminiGoogle's most capable multi-modal model with great performance across all tasks, with a 1 million token context window, and built for the era of Agents.Input:$0.1 / 1M tokensOutput:$0.4 / 1M tokensContext:1M tokenstoolstextimageaudiovideotext
- claude-3.7-sonnetanthropicIntelligent model, with visible step‑by‑step reasoningInput:$3 / 1M tokensOutput:$15 / 1M tokensContext:200K tokenstoolstexttextimage
- gemini-2.0-flash-litegeminiGoogle's smallest and most cost effective model, built for at scale usage.Input:$0.07 / 1M tokensOutput:$0.3 / 1M tokensContext:1M tokenstextimageaudiovideotext