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Qwen3 Reranker 4B


Qwen3 Reranker 4B is Alibaba's reranking model with a 41K context window. A 4B-parameter reranker from the Qwen3 series, delivering strong performance on text and code retrieval, classification, and bitext mining tasks.
Specifications
Canonical IDalibaba-qwen3-reranker-4b
TypeReranking
StatusActive
CreatorAlibabaAlibaba
Context Window41K tokens
Input ModalitiesText
Parameters4B

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output0/5
Text·
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
Voyage 4 NanoAvailable
DeepSeek R1 Distill Qwen3 8B131K$0.200$0.200Available
Qwen3 Embedding 0.6B33K$0.010$0.000Available
Qwen3 Embedding 4B41K$0.020$0.000Available
Qwen3 Embedding 8B41K$0.020$0.000Available
Qwen3 14B131K$0.060$0.200Available
Qwen3 32B131K$0.050$0.100Available
Qwen3 8B131K$0.035$0.138Available
Qwen3 Reranker 4B41KCurrent
Qwen3 4B Instruct262K$0.010$0.030Available
KwaiPilot KAT 32B Dev131K$0.900$0.900Available

Model IDs