Forensic Summary
Tencent has released Hy3, a 295B-parameter Mixture-of-Experts open-source model under Apache 2.0, featuring 256K context length and temporarily available for free inference via OpenRouter. The model's large context window, open weights, and Chinese provenance expand the attack surface for defenders managing LLM supply chains, jailbreak campaigns, and influence operations. Security teams should treat this as another high-capability open-weight model requiring the same scrutiny applied to comparable releases from Mistral or Meta.
Read the full technical deep-dive on Grid the Grey: https://gridthegrey.com/posts/first-look-tencent-releases-hy3-295b-moe-open-source-model-with-256k-context/
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