Grok 2.5 (OSS Ver.)
Grok 2.5 is xAI's powerful open-source large language model featuring 314B parameters with a Mixture-of-Experts architecture, released as their best model from last year under a community license.
https://huggingface.co/xai-org/grok-2?ref=producthunt
Product Information
Updated:Sep 16, 2025
What is Grok 2.5 (OSS Ver.)
Grok 2.5 represents xAI's significant contribution to open-source AI, being a 500GB large-scale model that was previously their best performing model. Built on a Mixture-of-Experts (MoE) architecture with 314 billion parameters, it features 8 experts with 2 active for inference, resulting in approximately 115B active parameters during operation. The model maintains the same core capabilities as its predecessor Grok-1 while being made available to developers and researchers under a community license agreement.
Key Features of Grok 2.5 (OSS Ver.)
Grok 2.5 is an open-source large language model released by xAI, featuring approximately 314B total parameters in a Mixture of Experts (MoE) architecture with 8 experts (2 active for inference). The model requires significant computational resources (8 GPUs with >40GB memory each) and is available with weights of approximately 500GB, licensed under the Grok 2 Community License Agreement.
MoE Architecture: Utilizes a 314B parameter Mixture of Experts architecture with 8 experts, of which 2 are active during inference, resulting in 115B active parameters
Advanced Inference Engine: Compatible with SGLang inference engine (v0.5.1+) supporting features like fp8 quantization and triton attention backend
Specialized Chat Template: Implements a post-trained model structure requiring specific chat templates for optimal interaction and response generation
Use Cases of Grok 2.5 (OSS Ver.)
Research and Development: Enables AI researchers and developers to study and experiment with large-scale language models and MoE architectures
Model Fine-tuning: Serves as a base model for organizations looking to develop specialized AI applications through fine-tuning
Academic Research: Provides opportunities for academic institutions to study advanced AI architectures and their capabilities
Pros
Open-source availability allows for community access and development
Advanced MoE architecture with significant parameter count
Supports modern optimization techniques like fp8 quantization
Cons
Requires substantial computational resources (8 GPUs with >40GB memory)
Large storage requirement (500GB)
Limited accessibility for hobbyists due to hardware requirements
How to Use Grok 2.5 (OSS Ver.)
System Requirements Check: Ensure you have 8 GPUs with at least 40GB memory each, as Grok 2 requires significant computational resources with TP=8 (tensor parallelism)
Download Model Weights: Run command: 'hf download xai-org/grok-2 --local-dir /local/grok-2'. The download will be approximately 500GB and contain 42 files. Retry if errors occur during download.
Install SGLang Inference Engine: Install the latest SGLang inference engine (version >= v0.5.1) from https://github.com/sgl-project/sglang/
Launch Inference Server: Run command: 'python3 -m sglang.launch_server --model /local/grok-2 --tokenizer-path /local/grok-2/tokenizer.tok.json --tp 8 --quantization fp8 --attention-backend triton'
Test the Model: Send a test request using command: 'python3 -m sglang.test.send_one --prompt "Human: What is your name?<|separator|>\n\nAssistant:"' - The model should respond identifying itself as Grok
Review License Terms: Ensure compliance with the Grok 2 Community License Agreement before using the model
Grok 2.5 (OSS Ver.) FAQs
Grok 2.5 is xAI's best model from last year that has been released as open source. It's a large-scale AI model with weights approximately 500 GB in size.
Popular Articles
Claude Sonnet 4.5: Anthropic’s latest AI coding powerhouse in 2025 | Features, Pricing, Compare with GPT 4 and More
Sep 30, 2025
How to Make a Ghostface AI Trend Photo with Google Gemini Prompt: 2025 Ultimate Guide
Sep 29, 2025
Google Gemini AI Photo Editing Prompts 2025: Top 6 Trending AI Image Generation Prompts You Need to Try
Sep 29, 2025
How to Fix Gemini Nano Banana Aspect Ratio Problems When Creating Images in 2025
Sep 17, 2025
Latest AI Tools Similar to Grok 2.5 (OSS Ver.)
Athena AI
Athena AI is a versatile AI-powered platform offering personalized study assistance, business solutions, and life coaching through features like document analysis, quiz generation, flashcards, and interactive chat capabilities.
Aguru AI
Aguru AI is an on-premises software solution that provides comprehensive monitoring, security, and optimization tools for LLM-based applications with features like behavior tracking, anomaly detection, and performance optimization.
GOAT AI
GOAT AI is an AI-powered platform that provides one-click summarization capabilities for various content types including news articles, research papers, and videos, while also offering advanced AI agent orchestration for domain-specific tasks.
GiGOS
GiGOS is an AI platform that provides access to multiple advanced language models like Gemini, GPT-4, Claude, and Grok with an intuitive interface for users to interact with and compare different AI models.
Popular AI Tools Like Grok 2.5 (OSS Ver.)
ChatGPT
ChatGPT is an advanced AI-powered chatbot developed by OpenAI that uses natural language processing to engage in human-like conversations and assist with a wide range of tasks.
SearchGPT
SearchGPT is an AI-powered search prototype by OpenAI that provides fast, conversational answers with clear sources using GPT models.
OpenAI
Free TrialLarge Language Models (LLMs)
OpenAI is a leading artificial intelligence research company developing advanced AI models and technologies to benefit humanity.
Open AI o3
OpenAI o3 is a next-generation AI reasoning model with enhanced capabilities in coding, mathematics, and problem-solving that achieves breakthrough performance on advanced benchmarks while prioritizing safety through deliberative alignment.