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Following the Hy3 Preview launch in late April, feedback was gathered from 50+ products and used to scale up post-training with higher quality data.

The full Hy3 release builds on feedback from over 50 products that used the earlier Preview version, incorporating improved post-training data. ✦ AI generated

Tencent Hy Team · Simon Willison's Weblog · 2026-07-06 · original ↗

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Following the Hy3 Preview launch in late April, we gathered feedback from 50+ products and scaled up post-training with higher quality data.

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▦ Tencent Hy Team ✳ Hy3 Preview

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explains mechanism → Hy3 outperforms similar-size models and rivals flagship open-source models that have 2-5x as many parameters.Tencent Hy Team · Simon Willison's Weblog explains mechanism → Hy3 shows significant gains in utility across various products and productivity tasks.Tencent Hy Team · Simon Willison's Weblog