Question 1

How much does qwen3.5-4b:free cost per 1M tokens?

Accepted Answer

Input is priced at $0.00 per 1M tokens, output at $0.00 per 1M tokens. Billing is per token, no rounding to batch sizes.

Question 2

How do I access qwen3.5-4b:free via API?

Accepted Answer

Send requests to the UnoRouter /v1/chat/completions endpoint with model=qwen3.5-4b:free. Any OpenAI-compatible client library works. Authentication uses a standard Bearer token.

Question 3

What is the context window of qwen3.5-4b:free?

Accepted Answer

qwen3.5-4b:free supports a context window of 262.1K tokens, shared between your prompt and the model's response.

Alibaba: qwen3.5-4b:free

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