Thunderbolt

Thunderbolt is an open-source, cross-platform AI client that connects to custom agents and models while enabling self-hosted data management.

Thunderbolt is an open-source, cross-platform AI client designed for enterprises to maintain sovereignty over their AI infrastructure. It functions by connecting to any OpenAI-compatible API models or MCP-compatible agents, allowing organizations to select their preferred technology without vendor lock-in. The platform supports deployment on-premises, in sovereign clouds, or within air-gapped environments. It includes support for reusable workflows and integrates with existing systems via MCP. Through a partnership with deepset, it offers sovereign deployments across the EU and forward-deployed engineering support.

Thunderbolt at a glance

Best for: Software engineer, Founder
Runs on: Web, Windows, macOS, Linux, iOS, Android
Pricing: Free
Released: July 2025
Category: AI chat assistant
Website: thunderbolt.io

Key features

Open-source codebase for audit and customization
Self-hosted deployment on your infrastructure
Support for OpenAI-compatible models like Claude and DeepSeek
Integration with MCP-compatible agents
Reusable workflows for task automation
Air-gapped deployment capability

Use it for

Deploying sovereign AI infrastructure
Managing recurring AI-driven tasks via workflows
Integrating proprietary systems with AI agents
Ensuring data sovereignty in air-gapped environments

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