AnalysisAI ModelsSeptember 9, 2026

Qwen 3.8 reasoning prefills show +18.18 point shift toward GPT-5.5 Pro

A 45-problem rerun (15 STEM, 15 non-STEM, 15 synthetic puzzles) seeded each target model's reasoning channel with the first 1% of GPT-5.5 Pro's reasoning. Qwen moved +18.18 points toward GPT-5.5 Pro, versus barely moving toward Opus 4.8 in the earlier run.

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Qwen 3.8 reasoning prefills show +18.18 point shift toward GPT-5.5 Pro