Msty — A private, local-first AI desktop app for chatting with local and cloud models side by side, with an optional paid tier for enterprise gateway and knowledge features.
By Noahlast updated pricing verified
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Msty in 20 seconds
Best for: individuals who want a polished, one-click desktop app for comparing local and cloud LLM responses side by side without command-line setup
Pricing: Free forever for the core Studio app; Aurum tier adds advanced features for $149/year or $349 one-time lifetime; Enterprise is custom-priced (5-seat minimum).
- Msty's core Studio app is free forever, went fully free in July 2025, and requires no account.
- Msty Aurum costs $149/year per user or $349 as a one-time lifetime purchase, adding Azure/Bedrock providers and Studio Assistants.
- Msty runs on Windows, macOS, and Linux desktops; there is no web or mobile version.
- Msty is closed source, developed by CloudStack, LLC.
- Msty has not yet completed SOC 2 or ISO 27001 certification as of this writing.
Limitations: Closed source, unlike Jan or Open WebUI.; No SOC 2 or ISO 27001 certification yet.; Desktop only, no web or mobile client.
Top alternatives: Jan, LM Studio, Ollama, AnythingLLM, Open WebUI — full list
What is Msty?
Msty is a desktop AI chat application that runs local language models and connects to cloud providers from one interface, aimed at users who want a polished, no-command-line way to try local LLMs. Its core feature is "parallel multiverse chats": running the same prompt against multiple models side by side to compare responses, plus the ability to switch models mid-conversation without starting over. Local inference uses a bundled MLX (Apple Silicon) and llama.cpp engine, so users can download and run open models with a single click instead of separately installing Ollama or LM Studio; more than a dozen cloud providers (OpenAI, Anthropic, DeepSeek, and others) can be connected in the same workspace. Msty also supports uploading local documents for retrieval-augmented chat, with files staying on the user's machine. Msty is developed by CloudStack, LLC, is closed source, and is distributed as a desktop app for Windows, macOS, and Linux. The company has expanded the product line into Nexus (a free local model gateway), Go (a beta bounded-agent product), and an enterprise tier for teams needing SSO and audit logs.
Msty (msty.ai, formerly msty.app) is a desktop application from CloudStack, LLC that runs local LLMs through a bundled MLX/llama.cpp engine or connects to more than a dozen cloud providers, letting users switch models mid-conversation from a single chat interface. The core Studio product went fully free in July 2025 and remains free forever, with no account required and local-only data storage; a paid Aurum tier layers on Azure/Bedrock provider connections, Studio Assistants, and Forge Mode for $149/year or $349 as a one-time lifetime purchase. Msty also ships Nexus, a free local AI gateway with an OpenAI-compatible interface for Ollama and llama.cpp, and Go, a beta agent product for building bounded workflows connected to Discord, Telegram, and WhatsApp; a knowledge-layer product called Stack is listed as coming soon. Msty is closed source, distributed as native installers for Windows, macOS, and Linux, and does not yet hold SOC 2 or ISO 27001 certification.
Standout feature: Parallel multiverse chats let a user send one prompt to multiple local and cloud models simultaneously and compare the responses side by side in the same window.
Biggest weakness: Closed source with no public GitHub repository for the core app, and the company has not yet completed SOC 2 or ISO 27001 certification, which limits adoption for security-conscious teams evaluating Msty against open-source alternatives.
Pros
- Core Studio app is free forever with no account required and fully local data storage.
- One-click local model downloads via a bundled MLX/llama.cpp engine, no separate Ollama install needed.
- Parallel multiverse chats compare multiple models' answers to the same prompt at once.
- Connects to 12+ cloud providers alongside local models in the same interface.
Cons
- Closed source, unlike direct competitors Jan and Open WebUI.
- No SOC 2 or ISO 27001 certification yet, a gap for enterprise buyers.
- No web or mobile client; desktop only (Windows, macOS, Linux).
- Go (agent product) and Stack (knowledge layer) are still in beta or listed as coming soon.
Msty pricing
Free tier · paid from $149/yr · verified from the vendor's pricing page
| Plan | Price | Notes |
|---|---|---|
| Studio Free | Free | Free forever, no account required; includes desktop chat with local/online models, personas, crews, agent mode, and knowledge stacks. |
| Studio Aurum (Annual) | $149/yr | Per user per year; adds Azure/Bedrock provider connections, Studio Assistants, shadow personas, and other advanced features. |
| Studio Aurum (Lifetime) | $349 once | One-time purchase per user with the same Aurum features plus lifetime updates and access. |
| Studio Enterprise | Custom | Custom pricing, minimum 5 seats; adds SSO, user management, role-based access, and audit logs. |
What reviewers say
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