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Tencent releases 770B parameter open-weight AI model Hy4 Preview

By PulseAugur Editorial · [1 sources] ·

Tencent has released Hy4 Preview, an open-weight AI model with 770 billion total parameters and 49 billion active parameters. This model features a 1 million token context window and utilizes a Mixture-of-Experts architecture, meaning only a fraction of its parameters are engaged per token. The release highlights the rapid advancement in the open-weight AI landscape. AI

IMPACT This release signifies a significant step in the open-weight AI model race, offering a large parameter count and context window that could influence future research and development.

RANK_REASON Frontier-lab model release with system card. [lever_c_demoted from frontier_release: ic=1 ai=1.0]

Read on Mastodon — mastodon.social →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Tencent releases 770B parameter open-weight AI model Hy4 Preview

How we ranked this

Signal score
15 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Significant
Frontier-lab model release with system card. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
model release
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High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.

Full methodology in our editorial standards.

COVERAGE [1]

  1. Mastodon — mastodon.social TIER_1 English(EN) · chipsterkids ·

    Tencent just dropped a 770B parameter AI model. 🤯 Meet Hy4 Preview. 🧠 770B total parameters ⚡ 49B active parameters 📚 1M-token context window 🔓 Open-weight 💻 Co

    Tencent just dropped a 770B parameter AI model. 🤯 Meet Hy4 Preview. 🧠 770B total parameters ⚡ 49B active parameters 📚 1M-token context window 🔓 Open-weight 💻 Coding, research, productivity & AI agents Hy4 uses a Mixture-of-Experts architecture, so only a portion of the model is a…

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