Polarity
Autonomous parallel code optimization with pre-merge verify
Polarity launched on September 26, 2025 with 128 votes, #255 of 8,160 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Polarity helps engineers ship code 10x faster with 10x the quality.
Self-improving models, custom made for your product.
We identify what repeats and route the routine majority to a custom small model, reserving a frontier model for the hard cases. We collect, create, and label the data, then build the evals that define what good looks like for your task. We post-train a compact model for your use case inside your own infrastructure. Nothing sensitive ever leaves the building. The model ships to production, where live usage becomes labeled feedback inside your environment, the raw material for the next training cycle. Continual learning turns live usage into training signal, so the model sharpens to your product the longer you run it. We don’t build one bigger model. We build a network of many specialized…from polarity.so
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