Muse Spark Open Reviews & Ratings

Muse Spark Open

5.0 out of 5 stars

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What is Unsloth?

Unsloth is a groundbreaking open-source platform designed to streamline and accelerate the fine-tuning and training of Large Language Models (LLMs). It allows users to create bespoke models similar to ChatGPT in just one day, drastically cutting down the conventional training duration of 30 days and operating up to 30 times faster than Flash Attention 2 (FA2) while consuming 90% less memory. The platform supports sophisticated fine-tuning techniques like LoRA and QLoRA, enabling effective customization for models such as Mistral, Gemma, and Llama across different versions. Unsloth's remarkable efficiency stems from its careful derivation of complex mathematical calculations and the hand-coding of GPU kernels, which enhances performance significantly without the need for hardware upgrades. On a single GPU, Unsloth boasts a tenfold increase in processing speed and can achieve up to 32 times improvement on multi-GPU configurations compared to FA2. Its functionality is compatible with a diverse array of NVIDIA GPUs, ranging from Tesla T4 to H100, and it is also adaptable for AMD and Intel graphics cards. This broad compatibility ensures that a diverse set of users can fully leverage Unsloth's innovative features, making it an attractive option for those eager to explore new horizons in model training efficiency. Additionally, the platform's user-friendly interface and extensive documentation further empower users to harness its capabilities effectively.

What is Muse Spark Open?

Muse Spark Open is a large-scale open-weight artificial intelligence model developed by Meta for multimodal understanding, software engineering, autonomous agents, and long-horizon reasoning. Released in October 2026, the model provides downloadable weights that allow developers to deploy and customize it outside Meta's hosted AI services. It uses a mixture-of-experts architecture containing 816 billion total parameters, with approximately 42 billion parameters activated during inference. Its one-million-token context window supports processing extensive documents, large software repositories, and lengthy sequences of instructions and interactions. The model is designed for complex coding workflows involving source code analysis, debugging, feature implementation, application development, and software testing. Its multimodal capabilities enable AI agents to interpret visual information and combine that understanding with reasoning and automated computer interactions. Meta demonstrated the model performing local software development tasks and controlling DaVinci Resolve to analyze video footage and prepare edited content. Muse Spark Open supports on-device deployment using two Apple M5 Ultra Mac Studio computers running the MLX framework, with additional compatibility across AMD, Intel, and NVIDIA hardware. Supported inference frameworks include SGLang, vLLM, TensorRT-LLM, Hugging Face Transformers, llama.cpp, and Unsloth, with optimized GPU kernels for improved processing performance. Developers can customize the model using PyTorch and TorchTitan to adapt its behavior to specialized tasks, organizational requirements, and application workflows. Muse Spark Open is distributed under the Muse Model License with limited commercial terms and is available through Hugging Face, Amazon SageMaker AI, Google Cloud Model Garden, Microsoft Foundry Models, and several hosted API providers.

Media

Media

Integrations Supported

ChatGPT
Devstral
Gemma
Google Colab
Kaggle
LFM3
Llama
Llama 2
Llama 3
Mistral AI
NVIDIA DRIVE
Recursive Flint
Thunder Compute

Integrations Supported

Baseten
Fireworks AI
Groq
Hugging Face
Modal
Nebius
OpenRouter

API Availability

API Availability

Pricing Information

Free
Free Version

Pricing Information

$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 Platforms

SaaS

Supported Platforms

SaaS
Windows
Mac
On-Prem
Linux

Customer Service / Support

Web-Based Support

Customer Service / Support

Not specified

Training Options

Documentation Hub
Online Training

Training Options

Documentation Hub

Company Facts

Organization Name

Unsloth

Date Founded

2023

Company Location

United States

Company Website

unsloth.ai/

Company Facts

Organization Name

Meta

Date Founded

2004

Company Location

United States

Company Website

research.meta.ai/blog/muse-spark-open

Categories and Features

AI Fine-Tuning

Not specified

Categories and Features

AI Coding Models

Not specified

AI Models

Not specified

AI Reasoning Models

Not specified

Foundation Models

Not specified

Large Language Models

Not specified

Multimodal Models

Not specified

Open-Weight AI Models

Not specified

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