Private AI for Professionals
Your private gateway to the latest AI models, designed for professionals who demand security, privacy, and powerful tools.
Powered by the best open-source AI models, self-hosted on Ksema
No credit card required • 5 free messages to start
Privacy-First by Design
Most AI tools process or store your data in ways you can't control. Ksema takes a fundamentally different approach:
- Encrypted-at-rest chat & file storageYour conversations, uploads, and workspace memory remain encrypted and safe.
- Client-side key generationYour private keys never leave your device.
- Zero training on your dataYour prompts, documents, PDFs, and conversations never train the models.
- Full data sovereigntyYour ideas remain yours, never repurposed, never harvested.
Better Than a Closed Models
Ksema is the best ChatGPT alternative for experts who want flexibility across writing, research, code, design, and analysis.
- Latest open-source LLMsGet access to the latest models from leading open-source LLMs such as Llama, Kimi, GLM, DeepSeek, Mistral, etc.
- Real-time SearchExecute web, Reddit, X/Twitter, and YouTube research using AI and prompting.
- Multi-model switchingSwitch between different AI models inside the same chat interface without losing context.
- All types of modelsGet access to reasoning models, Coding assistants, Summarization models, Research models, Image generation
Every Model You Need, All in One Place
Switch seamlessly between specialized AI models without losing context
Reasoning & Chat
Coding & Technical
Image Generation
Specialized Models
New models added regularly • All self-hosted for maximum privacy
We Can't Sell Your Data Because We Can't See It
Privacy isn't a toggle setting; it's our codebase.
| Feature | Ksema | Public AI Giants |
|---|---|---|
| Storage Encryption | User-Managed Keys | Platform-Managed Keys |
| Database Visibility | Zero (Ciphertext only) | Plaintext Access for Staff |
| Training on Data | Never | Often "Opt-out" only |
| Model Variety | 20+ Models | Single Vendor Lock-in |
End-to-end encryption • Zero-knowledge infrastructure • GDPR compliant
Here's How Professionals Are Using Ksema
Specialized AI for Sensitive Work
Legal
M&A Due Diligence & Contract Analysis
- Contract Review: Analyze complex agreements without exposing deal terms
- Due Diligence: Process confidential financial documents securely
- Regulatory Compliance: Navigate SEC, GDPR requirements with private AI
- Deal Strategy: Develop negotiation tactics without information leaks
Healthcare
Clinical Research & Patient Privacy
- Research Analysis: Interpret clinical papers without violating confidentiality
- Patient Data: Process sensitive medical information securely
- Treatment Planning: Develop care strategies with private AI assistance
- Documentation: Draft medical reports without data exposure
Engineering
Proprietary Code & IP Protection
- Code Review: Debug proprietary algorithms without leaking IP
- Architecture Design: Plan system designs confidentially
- Documentation: Create technical docs without exposing trade secrets
- Problem Solving: Get AI assistance on sensitive technical challenges
Founders
Strategic Planning & Fundraising
- M&A Strategy: Brainstorm acquisition strategies safely
- Pitch Decks: Develop fundraising materials confidentially
- Business Planning: Create strategic plans without exposure
- Market Analysis: Research competitors without revealing intentions
No credit card required • 5 free messages to start
Choose Your Perfect Plan
Start free, upgrade when you're ready. No hidden fees, no surprises.
- Get 20+ latest Open-Source text and image models
- 100% Open Source Models (Self-Hosted)
- Get real-time insights directly in your chats
- Shared context and memory across conversations
Loved by 26,000+ users
- Shared Chat History
- Centralized Billing
- Team Workspaces
- Priority Support
Perfect for growing teams
All plans include • End-to-end encryption • Self-hosted models • Priority support
Your Ideas Belong to You. Keep It That Way.
Join 26,000+ professionals who trust Ksema with their most sensitive work. Start chatting privately in seconds.