Jan-nano, 4B agentic model that outperforms DeepSeek-v3-671B using MCP

What it does

Meet Jan-nano, a 4B model that outscores DeepSeek-v3-671B using MCP. It's built on Qwen3-4B with DAPO fine-tuning, it handles: - real-time web search - deep research Model + GGUF: https://t.co/i8KSXcDhA9 To run it locally: - Install Jan Beta: https://t.co/l5UMY52zfc - Download Jan-nano in Jan Hu…

In the maker’s words, at launch

We’ve been experimenting with how far a tiny model can go when it’s good at calling external tools - and have just released Jan-nano, a 4 B model trained for MCP. Jan-nano: - tops DeepSeek-V3-671B on MCP tool-use (SimpleQA 80.7%) - handles live web search and multi-step deep research - runs fully on-device (≈4GB…

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