Jan
4.8
Free Users praise Jan for its clean UI and superior performance on Apple Silicon compared to competitors. The local API server is frequently cited as a 'killer feature' for developers.
The privacy-first, open-source ChatGPT alternative that runs 100% offline.
Free pricingAPI availableUpdated 2026-03-17
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Local Text GenerationDocument Q&A (RAG)
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About Jan
Jan is an industry-leading open-source AI orchestration platform designed to run LLMs entirely on-device, ensuring zero data leakage to external servers. Built on a modular C++ architecture known as Nitro, Jan optimizes inference across diverse hardware architectures, including NVIDIA GPUs (via TensorRT and CUDA), Apple Silicon (via Metal), and generic CPUs. By 2026, Jan has positioned itself as the definitive desktop 'AI Operating System' for developers and enterprises who require high-performance local inference without the vendor lock-in or privacy risks of cloud-based models. Its core value proposition lies in its OpenAI-compatible local server, which allows it to act as a drop-in replacement for proprietary APIs in existing development workflows. The platform features a robust extension framework that supports local Retrieval-Augmented Generation (RAG), multimodal vision capabilities, and integration with local vector databases. Its commitment to transparency and data sovereignty makes it a critical tool for regulated industries, including healthcare, legal, and government sectors, where data privacy is non-negotiable.
Core Capabilities
Jan is an industry-leading open-source AI orchestration platform designed to run LLMs entirely on-device, ensuring zero data leakage to external servers.