
LumiChats
Open source model. Proprietary agent. One AI workspace.
What it does
Bootstrap team. No VC. We fine-tuned our own AI model and open sourced it. LumiChat is built around it with an agentic mode that writes and executes real Node.js code in a sandboxed browser (no server), persistent memory, Study Mode, and RAG for large documents. Multi-model support. ₹69/day. The model is ours, the code is open, and the agent is extensible by anyone.
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Hey HN! Wanted to show our open source agent harness called Gambit. If you’re not familiar, agent harnesses are sort of like an operating system for an agent... they handle tool calling, planning, context window management, and don’t require as much developer orchestration. Normally you might see an agent orchestration framework pipeline like: compute -> compute -> compute -> LLM -> compute -> compute -> LLM we invert this so with an agent harness, it’s more like: LLM -> LLM -> LLM -> compute -> LLM -> LLM -> compute -> LLM Essentially you describe each agent in either a self contained…
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Launched alongside, March 2026
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