Alibaba
Qwen3.5 4B
Qwen instruction model for multilingual chat and tool use
Model facts
- Context window
- 262K tokens
- Maximum output
- 33K tokens
- Cheapest paid input
- $0.04 per 1M tokens
- Cheapest paid output
- $0.07 per 1M tokens
- Open weights
- yes
- Providers
- 3
Capabilities and modalities
reasoning, tool calling, structured output, attachments, temperature control, open weights, text, image, video.
Artificial Analysis benchmarks
Compare this model on the full LLM benchmark leaderboard.
| Configuration | AAI | Coding | Math | Output tokens/s |
|---|---|---|---|---|
| Reasoning | 20.4 | 22.6 | not measured | 21.0 |
| Non-reasoning | 16.1 | 20.3 | not measured | 15.1 |
Observed price history
- 2026-08-24: $0.04 input / $0.07 output per 1M tokens
API providers
- QVAC — model id qwen3.5-4b; free input / free output per 1M tokens; provider documentation
- EmpirioLabs AI — model id qwen3-5-4b; $0.04 input / $0.07 output per 1M tokens; provider documentation
- NanoGPT — model id qwen3.5-4b; $0.1 input / $0.2 output per 1M tokens; provider documentation