Model Tracker
Qwen3.5-4B
Qwen3.5-4B is an AI model made by Alibaba Tongyi. Alibaba Tongyi released it on 2 March 2026. It is generally available. Its context window is 262,144 tokens.
Qwen3.5-4B is an AI model made by Alibaba Tongyi. Alibaba Tongyi released it on 2 March 2026. It is generally available. Its context window is 262,144 tokens. Its weights are open. Its licence is apache-2.0.
- Released
- 2 March 2026 — github.com, read 16 October 2026
- Status
- Generally available — github.com, read 16 October 2026
- Takes
- Not confirmed: two readings disagree: text, image, video and text, image
- Returns
- Text — huggingface.co, read 16 October 2026
- Open weights
- Yes — huggingface.co, read 16 October 2026
- Licence
- apache-2.0 — huggingface.co, read 16 October 2026
- Context window
- 262,144 tokens — huggingface.co, read 16 October 2026
- Longest answer
- Not confirmed: The model card shows max_tokens values in usage examples, but does not print a standard maximum output limit.
- Knowledge cutoff
- Not confirmed: The model card and other maker pages reviewed do not state a knowledge cutoff for this model.
- API price, input
- Not confirmed: The maker's API pricing page does not list Qwen3.5-4B. The listed Qwen3.5-4B training price is not an API input-token price.
- API price, output
- Not confirmed: The maker's API pricing page does not list Qwen3.5-4B. The listed Qwen3.5-4B training price is not an API output-token price.
- Where
- Not confirmed: its line was not found on its page, and a second reading did not confirm it
- Parameters
- 4,000,000,000 — huggingface.co, read 16 October 2026
- Model card
- https://huggingface.co/Qwen/Qwen3.5-4B — huggingface.co, read 16 October 2026
Benchmarks
Measured by others, not by the maker: each score with the name the measurer gives the model and the setting it ran, its day and its licence.
Epoch AI
- OTIS Mock AIME 2024–2025, qwen3.5-4b_none: 55.8% (± 6.2), run 28 August 2026
Epoch AI, ‘Capabilities & benchmarking’, epoch.ai/benchmarks, CC BY 4.0: Epoch AI’s own runs and its Capabilities Index. Data · CC BY 4.0
Questions
When was Qwen3.5-4B released?
Alibaba Tongyi released Qwen3.5-4B on 2 March 2026.
Is Qwen3.5-4B still available?
Yes: it is generally available, as Alibaba Tongyi states it.
What is the context window of Qwen3.5-4B?
The context window of Qwen3.5-4B is 262,144 tokens, as Alibaba Tongyi prints it.
Are the weights of Qwen3.5-4B open?
Yes: Alibaba Tongyi publishes the weights of Qwen3.5-4B for download.
What is the licence of Qwen3.5-4B?
The licence of Qwen3.5-4B is apache-2.0, as Alibaba Tongyi names it.
How many parameters does Qwen3.5-4B have?
Qwen3.5-4B has 4,000,000,000 parameters, as Alibaba Tongyi publishes it.
More from Alibaba Tongyi
- Qwen-1.8B
- Qwen-14B
- Qwen-72B
- Qwen-7B
- Qwen-Audio
- Qwen-Image
- Qwen-VL
- Qwen-VL-Max
- Qwen-VL-Plus
- Qwen1.5-MoE-A2.7B
- Qwen2-Audio
- Qwen2-VL-72B
- Qwen2.5-Omni-3B
- Qwen2.5-Omni-7B
- Qwen2.5-VL-3B
- Qwen2.5-VL-7B
- Qwen3-0.6B
- Qwen3-1.7B
- Qwen3-14B
- Qwen3-235B-A22B
- Qwen3-30B-A3B
- Qwen3-32B
- Qwen3-4B
- Qwen3-8B
Sources
- GitHub - QwenLM/Qwen3.8 (read 16 October 2026)
- Qwen/Qwen3.5-4B (read 16 October 2026)
- Alibaba Cloud Model Studio model pricing (read 16 October 2026)
- GitHub - QwenLM/Qwen (read 16 October 2026)