Qwen3.5 4B
As of Oct 4, 2026, the cheapest Qwen3.5 4B API price is $0.04 per 1M input tokens (EmpirioLabs AI) and $0.07 per 1M output tokens (EmpirioLabs AI). Qwen3.5 4B is offered by 2 providers in the qwen family, open weights, reasoning enabled. One provider lists it as a free-tier offer.
API pricing by provider
Metered per-token prices. Cheapest input and output are highlighted; † marks a context-tier surcharge. How prices are ranked.
| EmpirioLabs AIopen | Cheapest$0.04 | Cheapest$0.07 | $0.02 | — | 262k |
| QVACfree | free | free | — | — | 33k |
Qwen3.5 4B pricing FAQ
What is the cheapest Qwen3.5 4B API?
As of Oct 4, 2026, EmpirioLabs AI has the lowest Qwen3.5 4B output price at $0.07 per 1M tokens, and EmpirioLabs AI has the lowest input price at $0.04 per 1M tokens. Prices are metered per-token rates in USD; free tiers and subscription plans are excluded.
How many providers offer Qwen3.5 4B?
2 providers list Qwen3.5 4B on Sovyron; 1 of them sell it at a metered per-token price.
Is Qwen3.5 4B free?
1 provider(s) list a free-tier offer: QVAC. Free tiers usually have rate limits.
What is the context window of Qwen3.5 4B?
Qwen3.5 4B supports a 262k-token context window and up to 33k output tokens.
Token cost calculator
What a month costs at one provider's published rates. Enter the tokens you expect to send and receive; cached tokens use the cached-input price where the provider lists one, and count as ordinary input where it does not.
Estimated
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