VibeThinker-1.5B-llamafile

About

• Update(1) 2026-04-24: apparently, VirusTotal does not like the llamafiles and marks them "suspicious". There's not much I can do there, I guess. Let us wait untill the other scanners try it; until then -- feel free to e.g. ClamAV scan them after download, but also feel free to redo it yourself following the links provided: your result will be binary compatible with what is uploaded here.
• Update(2) 2026-04-24: hmm, the "suspicious" flag seems to be cleared on some binaries. Good. May be just give it time to update the databases.
• Update(3) 2026-04-24: testing virustotal reaction on other files, see Qwen3.5-4B-llamafile/README.md

A llamafile is a universal (APE) single-file executable, which is based on llama.cpp-built binaries. It contains an embedded LLM model and can provide a console and/or a web interface to chat with it.

• "and/or" here has a literal meaning -- one can either run a console chat (--chat), or a web server (--server), or -- by default -- both.
• NB(1): by default the web server attempts to listen on all available interfaces -- run it as --host 127.0.0.1 to make it private to your system only!
• NB(2): there's also a cli completion interface (--cli), if you wish -- check the docs!

How to use:

• https://github.com/mozilla-ai/llamafile/blob/main/docs/running_llamafile.md
• https://github.com/mozilla-ai/llamafile/blob/main/docs/quickstart.md

Building references:

• https://github.com/mozilla-ai/llamafile/blob/main/docs/creating_llamafiles.md
• https://huggingface.co/mradermacher/VibeThinker-1.5B-i1-GGUF/blob/main/VibeThinker-1.5B.i1-IQ4_XS.gguf

Default arguments:

• https://huggingface.co/WeiboAI/VibeThinker-1.5B#usage-guidelines

--temp 0.6 --top-p 0.95 --top-k 20 # instead of -1

Quirks:

• https://github.com/mozilla-ai/llamafile/issues/373
• https://github.com/mozilla-ai/llamafile/tree/0.9.0?tab=readme-ov-file#gotchas-and-troubleshooting

For some quirks and workarounds (like how to make this run on WSL), see the second link above; in particular, if you are seeing a message like this:

Cannot open assembly '...': File does not contain a valid CIL image.

The reason might be that you have wine installed and it tries to run the executable (and fails). There are workarounds available -- see above; if that does not work, please open an issue, and when I see it (which might not happen immediately), we will think of something.