Qwen2 1.5B Base
A compact base checkpoint in Alibaba Cloud's initial Qwen2 open-weight family, balancing local usability with improved language capability.
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Why this model scores 36.1
Capability remains modest, but inexpensive local execution, weight availability and broad redistribution produce very high deployment and residual control difficulty.
News tied to Qwen2 1.5B Base
The model score of 36.1 rates this model's risk profile. The overall Doom Index of 66.8 measures the complete temporally weighted evidence record. These values answer different questions.
Each article's current Doom Index contribution is divided equally among the exact models named on that article. This prevents multi-model evidence from being claimed in full on several model pages. Model risk scores use a bounded temporal offset around their technical profile, but never feed back into the overall index.
Alibaba releases ten Qwen2 base and instruction models
Alibaba Cloud released Qwen2 weights spanning 0.5B to 72B parameters, including a 57B mixture-of-experts tier, with base and instruction variants and permissive commercial access for most sizes.
- Full item contribution
- +0.11
- Qwen2 1.5B Base equal share
- +0.01
Model score history
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R3
Doom Score 36.1
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-142416 under temporal-monthly-pressure-v4.
12 Aug 2026 -
R2
Doom Score 36.4
Exact-version evidence chronology replayed after run doombench-hourly-news-20260812-132112 under fixed-sensitivity-v3.
12 Aug 2026 -
R1
Doom Score 37.1
New exact Qwen2 1.5B base checkpoint.
12 Aug 2026