Mistral Small 4 vs. Holo4

Mistral Small 4 is a powerful open-source AI model introduced by Mistral AI to deliver advanced reasoning, multimodal understanding, and coding capabilities in a single system. The model represents the latest evolution in the Mistral Small family and consolidates multiple specialized AI technologies into one unified architecture. It integrates the reasoning capabilities of Magistral, the multimodal functionality of Pixtral, and the coding intelligence of Devstral. This design allows the model to handle tasks ranging from conversational assistance and research analysis to software development and visual data processing. Mistral Small 4 supports both text and image inputs, enabling applications such as document parsing, visual analysis, and interactive AI systems. Its mixture-of-experts architecture includes 128 experts with a small subset activated per token, allowing efficient resource usage while maintaining strong performance. The model also introduces a configurable reasoning effort parameter that allows developers to control the balance between speed and analytical depth. A large 256k context window enables it to process lengthy conversations, documents, and complex reasoning workflows. Performance optimizations significantly reduce latency and increase throughput compared with previous versions of the model. The system is designed for deployment across various environments, including cloud infrastructure, enterprise systems, and research environments. Developers can access the model through platforms such as Hugging Face, Transformers, and optimized inference frameworks. Released under the Apache 2.0 open-source license, Mistral Small 4 allows organizations to customize, fine-tune, and deploy AI solutions tailored to their specific needs. By combining reasoning, multimodal processing, and coding intelligence in one model, Mistral Small 4 simplifies AI integration for modern applications.

Holo4 is a family of agentic AI models developed by H Company for computer use and multi-step automation across desktop, web, mobile, terminal, MCP, and API environments. The series consists of Holo4 27B, a dense 27-billion-parameter model, and Holo4 35B-A3B, a 35-billion-parameter Mixture-of-Experts model with 3 billion active parameters. Rather than specializing exclusively in graphical interfaces or tool calling, Holo4 can click and type on screens, write and run its own code, and invoke MCP or API tools as different stages of a workflow require. The same model can therefore move between desktop applications, websites, Android applications, code sandboxes, and business APIs without switching to a separate model for each interface. H Company's Agentic Task Factory generated approximately 10,000 tasks across web applications, MCP servers, desktop software, and hybrid environments to support model development and evaluation. Holo4 underwent supervised fine-tuning on 127 billion tokens, with roughly three-quarters of that training data consisting of successful agentic trajectories covering desktop, web, MCP/API, and mobile tasks. Two reinforcement-learning experts were subsequently trained for desktop/web workflows and terminal/MCP/API workflows before being merged into the final generalist model. In H Company's evaluations, Holo4 27B scored 85.2% on OSWorld, 61.7% on OSWorld 2.0, 45.4% on AutomationBench, and 85.1% on AndroidWorld, although the company notes that reference-model results can use different harnesses and effort levels. Holo4 27B supports a 256K context window and is priced through the H Models API at $0.40 per million input tokens, $0.04 per million cached input tokens, and $3.00 per million output tokens. Holo4 35B-A3B also supports 256K context and is priced at $0.30 per million input tokens, $0.03 per million cached input tokens, and $2.00 per million output tokens.