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Simon Willison tests Qwen3.8 27B on word-based addition

Original: Qwen3.8 27B addition in words https://simonwillison.net/2026/Oct/4/qwen38-addition-in-words/ # AI # LLM # Tech

Simon Willison has published a new piece examining how the Qwen3.8 27B model handles addition when asked to work through arithmetic in words rather than digits. The write-up adds to ongoing scrutiny of how large language models perform basic math, a recurring point of interest among AI researchers testing open-weight releases.

Why now: Willison's hands-on write-ups of new open-weight models routinely draw attention from the AI community

Simon WillisonQwen3.8 27BAlibaba Qwen

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• Qwen3.8 27B addition in words https://simonwillison.net/2026/Oct/4/qwen38-addition-in-words/ # AI # LLM # Tech · simon_willison@robot.villas · 3

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