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What you can do with Janas

Janas is a family of C tools whose first component, Janas-LLM, runs large mixture-of-experts language models on ordinary computers, with or without a GPU.

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prabanta-dev/janas on GitHub

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What do you want to do?

5 use cases

  • Chat with an 80B model on a 32 GB laptop

    Install Janas-LLM on Linux and chat with a model larger than the laptop's RAM, offline after download.

    View prompt
    In the janas repo at <install-folder>, run ./janas-chat, choose the Qwen3-Next-80B-A3B model, and ask it one short question. Report the reply text and the tokens-per-second figure if shown. Verify that the process finished without the desktop becoming unresponsive.

  • Measure your own machine's speed with janas-bench

    Run janas-bench on your hardware to get tokens-per-second figures and a report for the project.

    View prompt
    In the janas repo at <install-folder>, run janas-bench --prompt 1024 --gen 16 and then janas-bench --rounds 3. Output the reading and writing tokens-per-second figures for each run. Verify that both runs completed and that the figures are reported as numbers, not errors.

  • Chat with a local model on a Windows laptop

    Unpack the Windows build and chat with a local model from a terminal.

    View prompt
    On a Windows x86-64 machine, unpack janas-windows-x86_64.zip into <install-folder>, open a terminal in the janas folder, and run .\janas-chat. Report which models are offered and confirm that a chat prompt appears.

  • Cap memory and keep the GPU off on a shared machine

    Start Janas-LLM with a memory limit or without the GPU so it does not take over a shared computer.

    View prompt
    In the janas repo, run JANAS_GPU=0 ./janas-chat and ask one short question. Report the reply and confirm from the output that no GPU was used. Verify that the process ended cleanly after Ctrl-D.

  • Speed up chat replies with draft tokens

    Enable draft decoding for supported Qwen and Gemma models to get faster chat replies.

    View prompt
    In the janas repo, start ./janas-chat --mtp with Qwen3.6-35B-A3B selected and ask it to explain how bread is made at home. Report the tokens-per-second shown and confirm the reply is complete.

How to use Janas

  1. Check you have what it needs: Linux x86-64 (Ubuntu 22.04, Debian 12 and later) or Windows 10 (1903 or later) or 11, x86-64; A terminal on the machine; Enough free disk space for the model you pick; the README lists Qwen3-Next-80B at 48.4 GB.
  2. Open prabanta-dev/janas on GitHub and read the README and license.
  3. Download the Linux build: curl -LO https://github.com/prabanta-dev/janas/releases/latest/download/janas-linux-x86_64.tar.gz
  4. Unpack it and enter the folder: tar xf janas-linux-x86_64.tar.gz && cd janas
  5. Start the chat: ./janas-chat
  6. Pick a model from the list shown; it is downloaded and checked before use

These steps come from our top use case, Chat with an 80B model on a 32 GB laptop, which also has a copy-paste agent prompt.

Janas alternatives · Best AI repos for Software and DevOps

About this repo

  • Who it is forWritten for developers and technical users who want to run large local language models on a laptop or desktop and measure how fast they run.
  • Why it is hot
  • LanguageC
  • Sourcegithub.com/prabanta-dev/janas · Back to Hot repos

Requirements

  • Linux x86-64 (Ubuntu 22.04, Debian 12 and later) or Windows 10 (1903 or later) or 11, x86-64
  • A terminal on the machine
  • Enough free disk space for the model you pick; the README lists Qwen3-Next-80B at 48.4 GB
  • A machine with 32 GB of RAM is the one the README measured on; other machines are untested
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Questions about Janas

What is Janas?

Janas is a family of C tools whose first component, Janas-LLM, runs large mixture-of-experts language models on ordinary computers, with or without a GPU. It is an open-source project on GitHub: https://github.com/prabanta-dev/janas.

Who is Janas for?

Written for developers and technical users who want to run large local language models on a laptop or desktop and measure how fast they run.

What can I do with Janas?

5 use cases so far, for example: Chat with an 80B model on a 32 GB laptop; Measure your own machine's speed with janas-bench; Chat with a local model on a Windows laptop. Each has steps and a copy-paste agent prompt.

What do I need to run Janas?

Linux x86-64 (Ubuntu 22.04, Debian 12 and later) or Windows 10 (1903 or later) or 11, x86-64; A terminal on the machine; Enough free disk space for the model you pick; the README lists Qwen3-Next-80B at 48.4 GB; A machine with 32 GB of RAM is the one the README measured on; other machines are untested.

What are alternatives to Janas?

Other hot AI repos in Software and DevOps: Harness2, iFixAi, Orca, Diagram Design, AI Memory.

Is Janas safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.