Grok 4

Grok 4

SpaceXSI
+
+

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About

Grok 4 is the latest AI model from Elon Musk’s xAI, marking a significant advancement in AI reasoning and natural language understanding. Developed on the Colossus supercomputer, Grok 4 supports multimodal inputs including text and images, with plans to add video capabilities soon. It features enhanced precision in language tasks and has demonstrated superior performance in scientific reasoning and visual problem-solving compared to other leading AI models. Designed for developers, researchers, and technical users, Grok 4 offers powerful tools for complex tasks. The model incorporates improved moderation to address previous concerns about biased or problematic outputs. Grok 4 represents a major leap forward in AI’s ability to understand and generate human-like responses.

About

Muse Spark Open is an open-weight, natively multimodal language model for developers and organizations building AI applications, coding systems, and agentic workflows. The released model has 816 billion total parameters, 42 billion active parameters, and a 1-million-token context window. Teams can download the model weights, run inference through supported engines such as vLLM, SGLang, TensorRT-LLM, Hugging Face Transformers, Apple MLX, llama.cpp, or Unsloth, and customize the model using PyTorch. It supports long-context reasoning, software engineering, coding, tool use, and multimodal inputs. Deployment options include cloud inference through listed API providers or self-hosting on compatible GPU systems; Meta documents a desktop setup using two Apple M5 Ultra Mac Studio computers. The model is released under the Muse Model License with limited commercial terms.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers, researchers, and technical professionals looking for a cutting-edge, multimodal AI model with advanced reasoning and strong ethical safeguards

Audience

AI developers, machine learning engineers, software engineers, AI researchers, enterprise development teams, and organizations seeking customizable open-weight multimodal models for local inference, autonomous agents, complex coding, and long-context AI applications

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 Not Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Pricing

$0
Model weights are available at no charge under the Muse Model License, which has limited commercial-use terms. Hosted inference providers set their own usage prices.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5

Pros & Cons from Real Users

Pros

  • Grok 4 seems like AGI. It blows every other model away in terms of advanced problem solving and mathematics. Unreal how good it is.

Cons

  • Have not found any cons yet. Such an incredible leap forward.

Pros & Cons from Real Users

Pros

  • Meta finally opened up a genuinely frontier-level Muse model. The 1M-token context window and 42B active parameters make it strong enough for large repos, long agent sessions, multimodal work, and complex coding without feeling like a stripped-down open model. The local deployment story is also a huge deal. Being able to run something this capable on two M5 Ultra Mac Studios is impressive, especially for teams that want more control over data, infrastructure, and customization. I also like how much of the stack is open around it. Muse Spark Open works with MLX, vLLM, SGLang, TensorRT-LLM, Transformers, llama.cpp, and Unsloth, and Meta is making the weights available through Hugging Face, SageMaker, Google Cloud Model Garden, and Microsoft Foundry.

Cons

  • Even though it is technically desktop-capable, needing two M5 Ultra Mac Studios for the full local experience is still a serious setup, so most developers will probably use hosted inference instead.

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

SpaceXSI
Founded: 2023
United States
grok.com

Company Information

Meta
Founded: 2004
United States
research.meta.ai/blog/muse-spark-open

Alternatives

Claude Sonnet 4

Claude Sonnet 4

Anthropic

Alternatives

Claude Opus 4.1

Claude Opus 4.1

Anthropic
GPT-6.1 Sol

GPT-6.1 Sol

OpenAI
Grok 4.20

Grok 4.20

SpaceXSI
Inkling

Inkling

Thinking Machines Lab
Grok 4.1

Grok 4.1

SpaceXSI

Categories

AI Coding Models Supported
AI Models Supported
Foundation Models Supported
Multimodal Models Supported

Categories

Integrations

OpenRouter Supported
Doraverse Supported
Editee Supported
F# Supported
Fireworks AI Not Supported
Grok Supported
Groq Not Supported
Hugging Face Not Supported
Java Supported
Laravel Supported
Nebius Not Supported
R Supported
Ruby Supported
SQL Supported
Scala Supported
Shiori Supported
Sup AI Supported
Together AI Not Supported
Visual Basic Supported
X (Twitter) Supported

Integrations

OpenRouter Supported
Doraverse Not Supported
Editee Not Supported
F# Not Supported
Fireworks AI Supported
Grok Not Supported
Groq Supported
Hugging Face Supported
Java Not Supported
Laravel Not Supported
Nebius Supported
R Not Supported
Ruby Not Supported
SQL Not Supported
Scala Not Supported
Shiori Not Supported
Sup AI Not Supported
Together AI Supported
Visual Basic Not Supported
X (Twitter) Not Supported
Claim Grok 4 and update features and information
Claim Grok 4 and update features and information
Claim Muse Spark Open and update features and information
Claim Muse Spark Open and update features and information