Qwen3.5 4B
by Alibaba (Qwen)Chat
Qwen3.5 4B is a low-cost multimodal reasoning model with 256K context, image and video input, function tools, and structured output.
- Context
- 262K tokens
- Max output
- 65,536 tokens
- Parameters
- 4.7B total
- Released
- 2025-11-01
- Weights
- Open
- Licence
- apache-2.0
alibaba/qwen3-5-4b · also seen as Qwen/Qwen3.5-4B
Specifications
Full facts as recorded, incl. what is unknown.
- Released
- 2025-11-01
- Weights
- Opennot gated
- License
- apache-2.0
- Input
- Text, Image, Video
- Output
- Text
- Context window
- 262,144 max across endpoints
- Max output
- 65,536
- Providers
- 3
- Epoch Capabilities Index
- not evaluated
- Direct price range
- $0.04 in · $0.07 out per 1M tokens · 1 of 3 providers have a comparable price
More details
- Last updated
- 2026-03-03
- Knowledge cutoff
- 2025-04
- Weights link
- Hugging Face · Qwen/Qwen3.5-4B
- Parameters
- 4.7B total
- Base model
- Qwen/Qwen3.5-4B-Base
- Developer country
- China
Capabilities
Across all endpoints: supported if any endpoint supports it.
- Tool calling
- Parallel toolsunknown
- Structured output
- Reasoning
- Image input
- PDF input
- Audio input
- Audio outputunknown
- Video input
- Prompt cachingunknown
- Web searchunknown
- Computer useunknown
- System messagesunknown
- Assistant prefillunknown
- Temperature
- Streamingunknown
- Attachments
Endpoints
One row per provider and variant; gateways are listed separately.
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Price history
No change since 19 Oct 2026. The cheapest direct price has been $0.04 in / $0.07 out per 1M tokens at EmpirioLabs AI on every data refresh since then.
Tracked from 19 Oct 2026. Headline-eligible direct prices only, so a price the sanity check flags never draws a spike. Series as JSON
Cost calculator
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