While AI

MID-TRAINING AND POST-TRAINING FOR LANGUAGE MODELS

Models improve while they work. A scientific RL and SFT post-training library.

While is the mid-training and post-training platform for language models. Open models, the latest SFT and RL algorithms, and an open-source SDK that builds and optimizes datasets from production traces. Every gain is measured on a held-out set.

Everything here was made with the SDK and published with the numbers behind it. A model ships when it beats its base on a held-out set with an interval that clears zero. If it does not, it does not ship.

pip install whileai

import whileai as wai

wai is While's whale and the alias of the whileai SDK.

Docs | Platform | SDK | Recipes

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