I built jevpipe as a wrapper for TypeSafe's Jev System 1 model.
Jev answers yes/no, picks from a few choices or gives a score, with probabilities, and it's fast
and cheap. See https://docs.typesafe.ai/introduction for more details on Jev. It performs on par
with small LLMs while being faster and cheaper (independent study:
https://www.ayautomate.com/blog/jev-vs-llm-benchmark), and in my benchmark it was better
calibrated than DeepSeek V4.1 Flash (see below).
I wanted agents to be able to use such a System 1 in the middle of a task without writing a
script each time. So jevpipe is a small CLI that can be used like grep or other Unix tools:
pipe lines or files in and get classifications out.
filter prints the lines that pass, map returns typed answers as JS
basically program their own System 1 for anything and apply it to a large chunk of data for
"gut feeling" decisions.
I also added an agent skill for jevpipe that teaches the agent when and how to use it.
I built jevpipe as a wrapper for TypeSafe's Jev System 1 model.
Jev answers yes/no, picks from a few choices or gives a score, with probabilities, and it's fast and cheap. See https://docs.typesafe.ai/introduction for more details on Jev. It performs on par with small LLMs while being faster and cheaper (independent study: https://www.ayautomate.com/blog/jev-vs-llm-benchmark), and in my benchmark it was better calibrated than DeepSeek V4.1 Flash (see below).
I wanted agents to be able to use such a System 1 in the middle of a task without writing a script each time. So jevpipe is a small CLI that can be used like grep or other Unix tools: pipe lines or files in and get classifications out.
Example:
filter prints the lines that pass, map returns typed answers as JS basically program their own System 1 for anything and apply it to a large chunk of data for "gut feeling" decisions.
I also added an agent skill for jevpipe that teaches the agent when and how to use it.
If you are interested in technical details, I also did a benchmark because that seemed to be missing from the recent evaluations. But it is by no means coding only or just a search tool. https://github.com/fabianboth/jevpipe/blob/main/bench/README...
It needs an OpenRouter key. I'm not affiliated with TypeSafe.
very nice. I finally made typesafe.ai account and put down $5 whole dollars.