Holo4 vs. K2 Horizon Comparison


Holo4 H Company	K2 Horizon Institute of Foundation Models	+	+
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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 K2 Horizon is a connected fleet of six open models spanning 375B-A23B, 36B-A4B, 32B, 7B, 3.7B, and 0.9B, designed to deliver strong performance across reasoning, mathematics, coding, agentic tasks, and general capabilities. The models share core architecture, vocabulary, training methodology, interfaces, evaluation infrastructure, and deployment tooling, making it easier to move between sizes and route workloads dynamically. The 375B-A23B model is the fleet’s most capable option for complex reasoning, software engineering, research, and long-horizon agentic work, while the 32B and 36B-A4B models target powerful local deployment. The 36B-A4B model introduces Mixture-of-Value Attention, combining sparse attention with Mixture-of-Experts layers to activate about 4 billion parameters per token while approaching the performance of the dense 32B model.
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 AI researchers, developers, and organizations searching for open models for reasoning, coding, tool use, agentic workflows, and deployments
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 Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or 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 Institute of Foundation Models Founded: 2025 United States ifm.ai/blog/k2/
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Categories AI Models Supported	Categories AI Coding Models Supported AI Models Supported Large Language Models Supported

Integrations Amp Supported CSS Supported ChatGPT Work Supported Codex CLI Supported Cursor Supported Dart Supported GitHub Supported HTML Supported Java Supported JetBrains Junie Supported Kineto by JetBrains Supported LobeHub Supported Lua Supported Microsoft Foundry Models Supported Microsoft SharePoint Supported PrivatClaw Supported Ruby Supported TranslateAI Supported Xcode Supported ZooClaw Supported Show More Integrations View All 129 Integrations	Integrations Amp Not Supported CSS Not Supported ChatGPT Work Not Supported Codex CLI Not Supported Cursor Not Supported Dart Not Supported GitHub Not Supported HTML Not Supported Java Not Supported JetBrains Junie Not Supported Kineto by JetBrains Not Supported LobeHub Not Supported Lua Not Supported Microsoft Foundry Models Not Supported Microsoft SharePoint Not Supported PrivatClaw Not Supported Ruby Not Supported TranslateAI Not Supported Xcode Not Supported ZooClaw Not Supported Show More Integrations
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