LM Studio
Desktop app to discover, download, and run open-source LLMs locally and privately, with an OpenAI-compatible local server
Desktop and web AI workspace for running local and cloud LLMs side by side, with split chats, personas, and knowledge stacks
Msty Studio is a polished workspace for chatting with local and hosted models in one place — llama.cpp, Apple MLX, and Ollama engines are supported out of the box, and it installs as an ordinary app on Windows, macOS, and Linux rather than as a self-hosted server. The Free tier is unusually generous, covering Agent Mode, Knowledge Stacks, and MCP tools. Aurum costs $149 per user per year, or $349 as a one-time lifetime license good for 2 desktop devices. Best for people who want a graphical local-LLM app with real RAG.
Msty is a private AI workspace from CloudStack, LLC that puts local and hosted language models behind a single interface. The current product is Msty Studio, which ships both as a desktop app for Windows, macOS (Apple Silicon and Intel), and Linux, and as a web app for paid users. Local inference runs through llama.cpp, Apple MLX, or Ollama engines supported out of the box, while hosted providers like OpenAI, Azure, and Amazon Bedrock plug in alongside them — so a cheap local model and a frontier cloud model can sit in the same conversation list without changing tools.
The workspace features are what separate it from a plain model runner. Split chats run several models on one prompt side by side for direct comparison. Knowledge Stacks handle retrieval over your own files with watch modes, chunk visualizers, and retrieval analytics. Persona and Crew conversations let multiple configured assistants collaborate in a single thread, and Agent Mode carries out multi-step tasks with MCP tools from the Toolbox. Msty Studio replaced the original Msty App v1.x, which is being phased out; Studio installs separately and a migration tool carries some legacy data over. The app is closed source, which is the main trade-off against Ollama and Open WebUI.
Msty suits people who want the privacy and zero-marginal-cost economics of local inference but not the terminal work and container setup that usually come with it. The free tier is capable enough to be a daily driver — Agent Mode, Knowledge Stacks, and MCP tools are all included — so the paid Aurum tiers are mostly about web access, enterprise model providers, and power-user features rather than unlocking the basics. The one-time lifetime license is the distinguishing commercial detail: most competitors in this space are either fully free or subscription-only.
Starting price: $149/yr · Free tier: yes · Model: freemium
Price history tracked from June 2026
| Plan | Price | Includes |
|---|---|---|
| Free | Free | Msty Studio Desktop, free forever · Chat with local and online models · Agent Mode and Knowledge Stacks · Persona and Crew conversations · Toolbox MCP tools, user memories, web search · Persona, Prompt, Skill, and Media studios |
| Aurum | $149/user/yr | Everything in Free, on Studio Desktop · Msty Studio Web access · Azure and Amazon Bedrock providers · Studio Assistants and Shadow Personas · Turnstiles and Toolbox Live Contexts · Insights and Forge Mode |
| Aurum Lifetime | $349 one-time | One-time payment, no renewal · All Aurum features · Lifetime updates and access · Activates on up to 2 desktop devices |
| Enterprise & Teams | $300/user/yr | All Aurum features, minimum 5 seats · SSO integrations · User and team management · Role-based access control · Shared Knowledge Stacks, Prompts, and Personas · Audit log |
| Pros | Cons |
|---|---|
| The free tier is genuinely capable — Agent Mode, Knowledge Stacks, and MCP tools are not paywalled | Closed source, unlike Ollama and Open WebUI, so you cannot audit or self-host the application itself despite the local-first privacy pitch |
| A one-time lifetime license is rare among AI apps and includes all future updates with no renewal | Local model speed is capped by your own hardware; large models need substantial RAM and a fast GPU or Apple Silicon |
| Local and hosted models coexist in one workspace, so you can route by cost, quality, or privacy per prompt | The Aurum activation limit is 2 desktop devices, shared with the legacy Msty App, which is tight if you use a laptop, a desktop, and a work machine |
| Ships as a standard installer for Windows, macOS (Apple Silicon and Intel), and Linux — no server to stand up | Upgrading from Aurum Yearly to Lifetime is only refunded if the yearly purchase was made within the previous 30 days |
| Msty publishes no end date for lifetime license availability but also gives no guarantee it stays on sale indefinitely |
Desktop app to discover, download, and run open-source LLMs locally and privately, with an OpenAI-compatible local server
Free, open-source tool to run open-weight LLMs locally via CLI, desktop, or API — with an optional paid cloud for larger models
Self-hosted web interface for local and API-based LLMs, free for unlimited users as long as the branding stays intact
Unified API to 400+ LLMs from 70+ providers through one OpenAI-compatible endpoint, with automatic failover and pass-through token pricing
Yes. Msty Studio Desktop has a Free tier that does not expire. It covers chat with local and online models, Agent Mode, Knowledge Stacks, Persona and Crew conversations, MCP tools through Toolbox, user memories, web search, and the Prompt, Persona, Skill, and Media studios. Paid Aurum plans add Studio Web, Azure and Bedrock providers, Live Contexts, Insights, and Forge Mode.
Yes. Aurum Lifetime is a one-time payment of $349 per user that unlocks every Aurum feature plus all future updates, with nothing to renew. The alternative is an Aurum yearly subscription at $149 per user. If you bought Aurum Yearly within the previous 30 days, Msty will refund it once you purchase the lifetime license.
An Aurum license activates on up to 2 desktop devices, and that limit is shared between the legacy Msty App v1.x and Msty Studio Desktop. Msty Studio Web carries no device limit, so one Aurum license works across any number of browsers. You can free a slot by deactivating an unused device in the activation portal.
No. Msty Studio is a ground-up rewrite that replaces the original Msty App v1.x, which is being phased out. Studio Desktop installs separately, so both can run side by side during a transition, and a migration tool moves some existing data across. The same Aurum license key works for either product.
All three run open-weight models on your own machine. Ollama is command-line and server oriented, LM Studio centers on model discovery plus an OpenAI-compatible local server, and Msty leans on workspace features: split chats, Knowledge Stacks for RAG, personas, and Agent Mode. Msty is closed source, while Ollama and Open WebUI are open source.
For local models, yes. Msty Studio Desktop runs llama.cpp, Apple MLX, and Ollama engines locally, so once the weights are downloaded those conversations need no internet connection. Connecting hosted providers such as OpenAI, Azure, or Amazon Bedrock naturally requires network access, and Msty Studio Web is browser-based rather than local.
The Enterprise and Teams plan is $300 per user billed yearly, with a minimum of 5 seats. It includes every Aurum feature and adds SSO integrations, user and team management, role-based access control, sharing of Knowledge Stacks, prompts and personas across the org, and an audit log.