Qwen3.5 4B (Reasoning) API Pricing
Alibaba · released 2026-03-02 · merges 2 reasoning-effort tiers
Also searched as: Qwen3.5 4B pricing · Qwen 3.5 4B price
Benchmarks shown for the highest-scoring reasoning tier. Merged tiers: Qwen3.5 4B (Reasoning), Qwen3.5 4B (Non-reasoning).
Qwen3.5 4B price
< 0.01¢ / 1K
0.015¢ / 1K
< 0.01¢ / 1K
What it actually costs
| Workload | Tokens | Cost |
|---|---|---|
| Short chat reply | 500 in / 300 out | 0.006¢ |
| RAG query | 4,000 in / 500 out | 0.0195¢ |
| Long document summary | 50,000 in / 1,000 out | 0.165¢ |
| Code review of a 2k-line file | 30,000 in / 2,000 out | 0.12¢ |
| 1,000 chat replies/day for 30 days | 30,000 × (500 in / 300 out) | $1.80 |
Cost = (input tokens ÷ 1,000,000 × $0.03) + (output tokens ÷ 1,000,000 × $0.15).
Benchmarks
#212 of 547
#135 of 195
Leaderboard neighbours
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Command A+ | 13.1 | — |
| DeepSeek R1 0528 (May '25) | 13.1 | $1.763 |
| Gemini 2.5 Flash (Reasoning) | 13.1 | $0.85 |
| Qwen3.5 4B (Reasoning) | 13.1 | $0.06 |
| GPT-5 nano (High) | 13.0 | $0.138 |
| Nemotron 3.5 Lightning | 12.9 | $0.095 |
| GLM-4.5 (Reasoning) | 12.8 | — |
More from Alibaba
| Model | Intelligence | Blended $/1M |
|---|---|---|
| Qwen3.8 Max (0902) | 45.4 | $3.00 |
| Qwen3.8 Max | 40.2 | $3.00 |
| Qwen3.8 2.4T A95B | 39.9 | $3.00 |
| Qwen3.8-Flash-Next | 39.8 | $0.23 |
| Qwen3.8 27B (Xhigh) | 33.7 | $1.125 |
| Qwen3.7 Max | 29.5 | $3.75 |
| Qwen3.6 Max Preview | 28.4 | — |
| Qwen3.6 Plus | 27.0 | $1.125 |
Count tokens & estimate cost for Qwen3.5 4B (Reasoning) See Qwen3.5 4B (Reasoning) on the leaderboard
Source: Artificial Analysis · last synced 2026-10-15
FAQ
Who develops Qwen3.5 4B (Reasoning)?
Qwen3.5 4B (Reasoning) is developed by Alibaba, released 2026-03-02.
How much does Qwen3.5 4B (Reasoning) cost per million tokens?
Qwen3.5 4B (Reasoning) costs $0.03 per 1M input tokens and $0.15 per 1M output tokens ($0.06 blended), per Artificial Analysis's official pricing data.
What is the Qwen3.5 4B API price?
The Qwen3.5 4B API price is $0.03 per 1M input tokens and $0.15 per 1M output tokens ($0.06 per 1M blended).
How much does Qwen3.5 4B cost for a typical request?
A short chat reply (500 in / 300 out tokens) costs about 0.006¢ on Qwen3.5 4B, at $0.03/1M input and $0.15/1M output.
Is Qwen3.5 4B free?
Qwen3.5 4B's official API list price is $0.03 per 1M input tokens and $0.15 per 1M output tokens. This site tracks list prices only, not free tiers or trial credits — check Alibaba's site for those.
How does Qwen3.5 4B (Reasoning) rank on benchmarks?
Qwen3.5 4B (Reasoning) scores 13.1 on the Artificial Analysis Intelligence Index, ranking #212 of 547 models we track.
Where does this data come from?
Pricing and benchmark data for Qwen3.5 4B (Reasoning) comes from Artificial Analysis (artificialanalysis.ai), synced daily. Last synced 2026-10-15.