Hy4

Hy4

Tencent
+
+

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About

Hy4 preview is a new-generation open source Mixture-of-Experts flagship model built for real-world productivity tasks across software engineering, office work, game development, and scientific research. The model contains 770B total parameters with 49B activated per token and supports a 1M-token context window, giving it the capacity to work through large codebases, extensive document collections, and long multi-step tasks. Its 78-layer architecture combines Gated DeepSeek Sparse Attention with IndexCache for cross-layer sparse index reuse and identity Hyper-Connections to expand information flow between layers. A native Multi-Token Prediction layer is included for speculative decoding. Hy4 preview is designed to understand, plan, debug, and verify long-horizon engineering tasks, with additional gains in front-end visual quality and interaction design.

About

Trinity Large Thinking is a frontier open source reasoning model developed by Arcee AI, designed specifically for complex, multi-step problem solving and autonomous agent workflows that require long-horizon planning and tool use. Built on a sparse Mixture-of-Experts architecture with roughly 400 billion total parameters but only about 13 billion active per token, the model achieves high efficiency while maintaining strong reasoning performance across tasks such as mathematical problem solving, code generation, and multi-step analysis. It introduces extended chain-of-thought reasoning capabilities, allowing the model to generate intermediate “thinking traces” before producing final answers, which improves accuracy and reliability in complex scenarios. Trinity Large Thinking supports a very large context window of up to 262K tokens, enabling it to process long documents, maintain state across extended interactions, and operate effectively in continuous agent loops.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers, researchers, and technical professionals seeking an AI model for coding, document work, game development, scientific reasoning, and complex productivity tasks

Audience

Developers and enterprises building autonomous AI agents that need a high-performance, open-source reasoning model for complex, multi-step workflows

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

Free
Free Version Supported
Free Trial Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Tencent
Founded: 1998
China
hy.tencent.ai/research/hy4-preview

Company Information

Arcee AI
Founded: 2023
United States
www.arcee.ai/blog/trinity-large-thinking

Alternatives

Alternatives

Kimi K2 Thinking

Kimi K2 Thinking

Moonshot AI
GLM-5.1

GLM-5.1

Z.ai
Qwen3.5

Qwen3.5

Alibaba
LongCat-2.0

LongCat-2.0

LongCat

Categories

AI Coding Models Supported
AI Models Supported
Foundation Models Supported

Categories

AI Models Supported

Integrations

Claude Fable 5 Not Supported
Claude Fable 5.1 Not Supported
Claude Fable 5.5 Not Supported
Claude Haiku 5.5 Not Supported
Claude Mythos 5 Not Supported
Claude Mythos 5.1 Not Supported
Claude Opus 4.6 Not Supported
Claude Opus 4.7 Not Supported
Claude Opus 4.8 Not Supported
Claude Opus 5 Not Supported
Claude Opus 5.5 Not Supported
Claude Sonnet 5.5 Not Supported
OpenClaw Not Supported
OpenRouter Not Supported
Tencent Hy Supported
Vercel AI Gateway Not Supported
Visual Studio Code Not Supported

Integrations

Claude Fable 5 Supported
Claude Fable 5.1 Supported
Claude Fable 5.5 Supported
Claude Haiku 5.5 Supported
Claude Mythos 5 Supported
Claude Mythos 5.1 Supported
Claude Opus 4.6 Supported
Claude Opus 4.7 Supported
Claude Opus 4.8 Supported
Claude Opus 5 Supported
Claude Opus 5.5 Supported
Claude Sonnet 5.5 Supported
OpenClaw Supported
OpenRouter Supported
Tencent Hy Not Supported
Vercel AI Gateway Supported
Visual Studio Code Supported
Claim Hy4 and update features and information
Claim Hy4 and update features and information
Claim Trinity-Large-Thinking and update features and information
Claim Trinity-Large-Thinking and update features and information