Holo4 vs. Leanstral 1.5 Comparison


Holo4 H Company	Leanstral 1.5 Mistral AI	+	+
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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 Leanstral 1.5 is an Apache-2.0 licensed model for practical proof engineering in Lean 4, built to make formal verification more powerful and accessible. With 119B total parameters and only 6B active parameters, it delivers a major performance upgrade for theorem proving, agentic proof engineering, and real-world code verification. Leanstral 1.5 was trained through a three-stage process: mid-training, supervised fine-tuning, and reinforcement learning with CISPO. In the multiturn environment, the model receives a theorem statement, submits a proof, gets Lean compiler feedback, and refines its approach until the proof compiles or the budget is exhausted. In the code agent environment, Leanstral works like a developer in a raw filesystem: it edits files, runs bash commands, and uses the Lean language server to inspect goals, errors, and type information in real time.
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 Engineers and researchers who need an open model for theorem proving, proof debugging, and real-world code verification
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 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 Free Free Version 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 Mistral AI Founded: 2023 France mistral.ai/news/leanstral-1-5/
Alternatives No Alternatives	Alternatives Leanstral Mistral AI
	Harmonic Aristotle Harmonic
	MiMo-V2.6-Pro Xiaomi Technology
	DeepSWE Agentica Project
View All	SWE-1.5 Cognition View All
Categories AI Models Supported	Categories AI Models Supported

Integrations .NET Supported Brokk Supported Charlie Supported GPT-5.5-Cyber Supported Gemini Enterprise Agent Platform Supported Model Context Protocol (MCP) Supported Novelcrafter Supported OpenAI Supported OpenAI Codex Supported OpenClaw Supported PHP Supported Pi Agent Supported PowerShell Supported Python Supported React Supported SimpleClaw Supported SpawnHQ Supported ThreadMaster.ai Supported Visual Studio Code Supported ZooClaw Supported Show More Integrations View All 129 Integrations	Integrations .NET Not Supported Brokk Not Supported Charlie Not Supported GPT-5.5-Cyber Not Supported Gemini Enterprise Agent Platform Not Supported Model Context Protocol (MCP) Not Supported Novelcrafter Not Supported OpenAI Not Supported OpenAI Codex Not Supported OpenClaw Not Supported PHP Not Supported Pi Agent Not Supported PowerShell Not Supported Python Not Supported React Not Supported SimpleClaw Not Supported SpawnHQ Not Supported ThreadMaster.ai Not Supported Visual Studio Code Not Supported ZooClaw Not Supported Show More Integrations
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