Zylon

Zylon is a Web and API enterprise AI platform for regulated organizations that need private generative AI deployed inside their own infrastructure (on-prem, private cloud, or air-gapped) so sensitive data never leaves company-controlled servers.

Key capabilities include:

• AI Core with local LLMs, vector databases, GPU orchestration, and document ingestion/processing for knowledge retrieval and semantic search
• API Gateway with OpenAI- and Anthropic-compatible endpoints, plus authentication, logging, rate limiting, and observability to integrate custom apps and agents (including n8n and LangChain)
• Workspace for secure AI chat, document generation/automation, knowledge base access, collaboration, and cited responses with project-level access control
• Multi-language support and multi-modal handling for documents, spreadsheets, and images

Pricing: Paid, fixed-cost unlimited usage with no per-token pricing or usage limits.

Notable for offering a complete on-prem AI stack that can be production-ready in under one week (often under three hours) and for being built by the creators of PrivateGPT (57,000+ GitHub stars), an open-source foundation adopted by teams at Google, Meta, and J.P. Morgan.