Qwen3.5 4B (Reasoning)

阿里巴巴China

Qwen3.5 4B (Reasoning) is a lightweight, 4-billion parameter model from Alibaba's Qwen3.5 series, specifically optimized for enhanced reasoning and chain-of-thought capabilities. It offers a strong balance of performance and efficiency, making it suitable for fast inference tasks that require logical deduction.

ReasoningFastCheap

Input / 1M tokens

$0.03

Output / 1M tokens

$0.15

Output tokens/s

201.95

First-token seconds

0.24s

Supported plans

Benchmark history

Evaluations

TAU2

Measured May 14, 2026Source

Score

0.92

Terminalbench Hard

Measured May 14, 2026Source

Score

0.18

Lcr

Measured May 14, 2026Source

Score

0.56

Ifbench

Measured May 14, 2026Source

Score

0.52

Scicode

Measured May 14, 2026Source

Score

0.16

Hle

Measured May 14, 2026Source

Score

0.08

Gpqa

Measured May 14, 2026Source

Score

0.77

Artificial Analysis Coding Index

Measured May 14, 2026Source

Score

17.5

Artificial Analysis Intelligence Index

Measured May 14, 2026Source

Score

27.1

Plan availability

Products and plans that support this model

No products or plans have been linked to this model yet.

Discussion

Thinking... Make sure you are connected to GitHub server