Sanctum
Run Private, Encrypted AI Models Directly On Your Device
by Sanctum AI · Brooklyn, NY, USA · Founded 2023
What is Sanctum?
Sanctum is a privacy-first, local AI assistant that lets you run full-featured open-source LLMs directly on your Mac or Windows PC — no cloud, no data leaks.
Built for users who need genuine data sovereignty, it runs models like LLaMA, Mistral, and thousands of GGUF models from HuggingFace entirely on-device with AES-256 encryption.
Sanctum's AI matching engine helps you select the right model for your task, while the Sanctum Vault securely stores encrypted chat history locally. It also supports offline document interaction including PDF, DOCX, and PPTX, plus local audio transcription via Whisper — all without a single byte leaving your machine.
Sanctum — Run Private, Encrypted AI Models Directly On Your Device Whether you're evaluating Sanctum for your team or comparing it to alternatives in the AI Productivity Tools category, this in-depth review covers everything: features, pricing, real user reviews, pros and cons, integrations, and direct comparisons against competitors.
Key Features 8
Who Is Sanctum For
Pros & Cons
- True Zero-Access Data Architecture
- Offline-First After Model Download
- Broad GGUF Model Compatibility
- Active Versioned Changelog Cadence
- No Cloud Sync Or Hybrid Mode
- High RAM Requirement For Larger Models
- Limited Mobile Platform Support
Frequently Asked Questions
5 questionsSanctum supports any GGUF-format model available on HuggingFace, including LLaMA 3, Mistral, Mixtral-8x7B, Phi-3, IBM Granite Code, and Gemma. Its AI matching engine checks hardware compatibility before download so the selected model runs efficiently on your specific device.
The Sanctum Vault is a fully encrypted, local database that stores all your chat history on-device. It uses AES-256 encryption and is accessible only via your account credentials. Sanctum Pro users also gain advanced full-text search across the Vault without any data leaving the machine.
Yes. After the initial model download, Sanctum operates entirely offline. All LLM inference, document processing, and audio transcription happen locally. An internet connection is only needed to download new models or check HuggingFace compatibility.
Sanctum supports PDF, DOCX, PPTX, JS, HTML, CSS, and several other common formats. Files can be imported via drag-and-drop, embedded using the Postgres-backed RAG engine, and queried directly in-chat with source-highlighted responses.
Sanctum v1.6+ includes a built-in local API server powered by llama.cpp. Developers can expose any downloaded GGUF model as an OpenAI-compatible endpoint, configure custom ports, set inference parameters, and monitor real-time resource usage — making it usable with any app that supports the OpenAI SDK.
Who is Sanctum for?
Sanctum is most useful for Privacy-Conscious Professionals, Healthcare Analysts, Legal Practitioners and Software Developers.
Sanctum pricing
Sanctum uses a freemium model: a usable free tier with optional paid upgrades. Headline pricing: From $10/mo. For the current tier breakdown and any limits, see the pricing section above or check the vendor's pricing page directly — limits and prices change.
What's New
monthlyTemporarily removed support for .mp4 and other video file formats to stabilize local audio processing pipeline introduced in v1.9.
Added fully offline audio transcription using Whisper models with real-time synced playback, searchable transcripts, and broad file format compatibility — all processed locally on-device.
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All Features of Sanctum
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Sanctum Pricing
From $10/mo
- Local LLM Execution On-Device
- Encrypted Sanctum Vault Storage
- Chat With AI Offline
- Access To Featured Open-Source Models
- 100% Private PDF Chatting & Summarization
- Advanced Sanctum Vault Search
- Early Access To New Features & Model Updates
- Full HuggingFace GGUF Model Library Access
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