Founded
2023
Starting Price
$0
Category
Productivity
Last updated March 10, 2026
About Msty
Msty is a privacy-first desktop application that provides a unified interface for chatting with both local and online AI models. It supports providers like OpenAI, Anthropic Claude, Google Gemini, DeepSeek, and Ollama, allowing users to switch models mid-conversation without vendor lock-in. With zero telemetry, offline capability, and features like Knowledge Stacks (RAG) and parallel model comparison, Msty makes advanced AI accessible while keeping data entirely on-device.
Pros & Cons
Pros
- Genuine privacy-first architecture with zero telemetry and all data stored locally on-device
- Supports 12+ AI providers and local models in one interface with mid-conversation model switching
- Powerful free tier includes core chat, Knowledge Stacks, MCP tools, and Personas
- Cross-platform desktop support for Windows, macOS (Intel and Apple Silicon), and Linux
- Parallel model comparison via Multiverse Chats is rare among competitors
Key Features
Multi-Provider Model Support
Connect to OpenAI, Anthropic Claude, Google Gemini, Mistral, DeepSeek, xAI, Cohere, and run local models via Ollama — all from one interface
Knowledge Stacks (RAG)
Build retrieval-augmented generation pipelines from PDFs, YouTube transcripts, websites, and other data sources to ground AI responses in your own content
Parallel Multiverse Chats
Send the same prompt to multiple AI models simultaneously and compare responses side-by-side in real time
Zero Telemetry & Offline Mode
No tracking, no analytics, no data collection. Run local models fully offline with all chats stored on-device
Toolbox with MCP Tools
Integrate external tools and APIs via the Model Context Protocol (MCP) to extend AI capabilities with live data and actions
Personas & Shadow Personas
Create custom AI personas with specific instructions and behavior profiles; shadow personas layer additional context onto any conversation
Prompt Studio
Pricing
Free
$0
- Chat with local and online models
- Knowledge Stacks
- Toolbox (MCP tools)
- Personas
- Web Search
Most Popular
Best For
Private AI Research & Analysis
Researchers who cannot send sensitive data to cloud services can run local models fully offline while retaining full chat history on-device
AI Model Evaluation & Comparison
Developers and AI teams can benchmark and compare responses from multiple models on the same prompts in real time
Knowledge-Grounded Content Creation
Content teams can build Knowledge Stacks from company documents and use RAG-powered conversations to generate accurate, source-backed content
Team AI Workspace
Organizations can deploy Msty Teams with SSO, role-based access, and shared prompts to standardize AI usage across departments
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