N0x – LLM inference, agents, RAG, Python exec in browser, no back end
Full ReAct agent loop running locally with WebGPU and Pyodide—no server required.

1.7B LLM running entirely in-browser with WebGPU—no servers, no API keys, no per-message costs.
Website owners wanting on-device AI chat widgets
WebLLM · Transformers.js · Off Grid AI
Full ReAct agent loop running locally with WebGPU and Pyodide—no server required.
Cache-aware execution cuts eval costs while tracking grounding and relevance metrics.
LLM cost optimizer, but Anthropic's batch API and local quantization solve this cheaper.
Breaks down hidden RAG costs like vector storage overhead and HNSW indexing fees.
Explicit kernel control over TVM-style black boxes, but benchmarks show mixed wins vs Transformers.js.
One-file RAG chatbot backend when Chatbase and CustomGPT already dominate this space.