Model WarsApril 5, 2026via The Decoder
Alibaba's Qwen team makes AI models think deeper with new algorithm
Why it matters
This algorithmic breakthrough addresses a fundamental limitation in how AI models learn to reason, potentially giving Alibaba's Qwen models a significant competitive advantage in complex reasoning tasks.
Key signals
- Doubles the length of thought processes
- New algorithm weights each step based on downstream impact
- Addresses reinforcement learning limitation where every token gets same reward
The hook
Alibaba's Qwen team just cracked the reasoning bottleneck that's been holding back AI models.
Reinforcement learning hits a wall with reasoning models because every token gets the same reward. A new algorithm from Alibaba's Qwen team fixes this by weighting each step based on how much it shapes what comes next, doubling the length of thought processes in the process.
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Relevance score:75/100