Holo4

Holo4

H Company
Hy4

Hy4

Tencent
+
+

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About

Holo4 is a family of generalist agentic AI models from H Company designed to operate software across graphical interfaces, code environments, MCP servers, APIs, desktop applications, the web, and mobile devices. The family includes a 27B dense model and a 35B-A3B Mixture-of-Experts model with 3B active parameters, both supporting a 256K context window. Unlike agents optimized around a single interface, Holo4 can click and type on screens, write and execute code, and call MCP or API tools depending on what a task requires. The models were trained with supervised fine-tuning and reinforcement learning on agentic workflows spanning desktop, web, MCP/API, mobile, coding, multimodal reasoning, and GUI grounding. Holo4 27B achieved 85.2% on OSWorld at a reported cost of $0.08 per task, while Holo4 35B-A3B scored 80.8% at $0.05 per task in H Company's evaluation.

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.

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

AI developers, agent platform builders, automation teams, enterprises, and researchers that need generalist computer-use agents capable of completing multi-step workflows across GUIs, desktop and mobile applications, websites, code environments, MCP servers, and business APIs

Audience

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

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

$0.40 per 1M tokens (input)
Input: $0.40 per 1 million tokens
Output: $3 per 1 million tokens
Free Version Not Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not 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

H Company
Founded: 2023
France
openai.com

Company Information

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

Alternatives

Holo2

Holo2

H Company

Alternatives

Holo3

Holo3

H Company
Holo3.1

Holo3.1

H Company
Inkling

Inkling

Thinking Machines Lab
Qwen3.5

Qwen3.5

Alibaba

Categories

AI Models Supported

Categories

AI Coding Models Supported
AI Models Supported
Foundation Models Supported

Integrations

Amazon Bedrock Supported
Astra for Law Supported
ChatGPT Supported
ChatGPT Work Supported
Dessix Supported
Devin Desktop Supported
FastRouter Supported
GPT-5.1-Codex Supported
GPT-5.5 Thinking Supported
GPT-5.5-Cyber Supported
Higgsfield Supercomputer Supported
IntelliJ IDEA Supported
Kubernetes Supported
Microsoft Copilot Studio Supported
Muse Supported
Objective-C Supported
OpenAI Codex Supported
Oz Supported
Springhub Supported
Use AI Supported

Integrations

Amazon Bedrock Not Supported
Astra for Law Not Supported
ChatGPT Not Supported
ChatGPT Work Not Supported
Dessix Not Supported
Devin Desktop Not Supported
FastRouter Not Supported
GPT-5.1-Codex Not Supported
GPT-5.5 Thinking Not Supported
GPT-5.5-Cyber Not Supported
Higgsfield Supercomputer Not Supported
IntelliJ IDEA Not Supported
Kubernetes Not Supported
Microsoft Copilot Studio Not Supported
Muse Not Supported
Objective-C Not Supported
OpenAI Codex Not Supported
Oz Not Supported
Springhub Not Supported
Use AI Not Supported
Claim Holo4 and update features and information
Claim Holo4 and update features and information
Claim Hy4 and update features and information
Claim Hy4 and update features and information