FrontierThe story, in brief
Tencent releases Hy3 open-source model that allegedly matches models up to five times its active size
295B parameters. 21B active. Tencent's Hy3 claims to match models 5x larger while cutting hallucinations in half.
The KeyNews take
Why it matters
Tencent's MoE architecture challenges the scaling assumption that bigger always means better. If validated, this efficiency claim reshapes how enterprises approach model deployment costs and performance trade-offs.
The key facts
6 to knowTencent releases Hy3 open-source LLM
295B total parameters, 21B active (MoE architecture)
Claims performance parity with models 2-5x larger
Hallucination rate: 5.4% (stated 50% reduction)
Open-source release
Published July 6, 2026
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: Tencent has released Hy3, an open-source language model with 295 billion parameters built on a mixture-of-experts architecture. Only 21 billion parameters are active at any given time. Tencent says Hy3 matches models two to five times its size while cutting its hallucination rate in half to 5.4…