Tencent Hy4 Preview

by Tencent

Tencent Hy4 is a large-scale open-source foundation model released in preview on August 28, 2026. It features 770 billion total parameters with 49 billion active parameters in a Mixture-of-Experts architecture, supporting context windows exceeding 1 million tokens. Licensed under Apache 2.0, it targets coding, research, and productivity tasks.

Large Language Models
Proprietary

Primary Use Cases

  • Large-scale coding tasks
  • Research and scientific analysis
  • Enterprise productivity workflows
  • Long-context document processing

✅ Strengths

  • Fully open-source under Apache 2.0 — no commercial restrictions
  • Extremely large context window (1M+ tokens)
  • MoE architecture enables efficient inference relative to parameter count

⚠️ Limitations

  • Preview status — not yet generally available
  • Tencent acknowledges tendencies toward over-verification
  • Institution-scale deployment may require significant compute resources
  • Preview label should be preserved until GA announced

Technical Specifications

Developer
Tencent
Category
Large Language Models
Type
🧠 Foundation Model
License
UNKNOWN

Trust & Privacy

Health Status
🟢 Active
Trains on User Data
❓ Unknown
Certifications
None listed

Ecosystem & Integrations

API Access
❌ No
Chrome Extension
❌ No
Mobile App
❌ No
Pricing Model
🔓 Open Source
Free Tier
✅ Available

Pricing Breakdown

Open Source

Self-hosted deployment under Apache 2.0 license

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