qwen3.5-2b (free)
qwen/
Qwen model · Served by DeepInfra · live on the gateway · :free available
Pricing
About qwen3.5-2b (free)
Qwen3.5-2B is a compact yet capable model from Alibaba's Qwen3.5 series. It features a 262K token context window, support for 201 languages, thinking/reasoning mode, and tool calling for agentic workflows. A strong choice for prototyping, fine-tuning, and effi
What it supports
- Tool calling (function calling)
- JSON mode and structured output
- Image input (vision)
- Audio input
- Extended reasoning
- Streaming responses
- OpenAI SDK, Anthropic SDK and any OpenAI-compatible client
Make a request
curl https://rapidrouter.ai/api/v1/chat/completions \
-H "Authorization: Bearer $RAPIDROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "qwen/qwen3.5-2b:free",
"messages": [{ "role": "user", "content": "Hello" }]
}'Frequently asked
How do I call qwen3.5-2b (free) through an OpenAI-compatible API?
Point any OpenAI-compatible client at https://rapidrouter.ai/api/v1 with a Rapid Router API key and set the model to qwen/qwen3.5-2b:free. The chat completions endpoint is https://rapidrouter.ai/api/v1/chat/completions.
What is the context window of qwen3.5-2b (free)?
qwen3.5-2b (free) has a context window of 262,144 tokens on Rapid Router, and returns up to 262,144 output tokens per reply.
Is there a free version of qwen3.5-2b (free)?
Yes. Call qwen/qwen3.5-2b:free:free and the request is paid for from Rapid Router's sponsored daily pool, within the free tier's daily request limit.
What can qwen3.5-2b (free) do?
On Rapid Router, qwen3.5-2b (free) supports tool calling, JSON mode, image input, extended reasoning.