OASYS is a research lab at MIT developing algorithms and abstractions for AI at the last mile. We study how to adapt general-purpose AI models to the downstream context and qualitative feedback that characterize real applications.

We do science in the open. Our work has introduced influential open-source AI models and systems, deployed by many dozens of organizations and collectively downloaded over a hundred million times to date. These include the ColBERT retrieval model, the DSPy programming framework, and the RLM harness.

Recent Selections

Open Source

Since April 2020

Efficient passage search through contextualized late interaction and multi-vector representations.

Since Dec 2022

The framework for programming, rather than prompting, language models.

A prompt optimizer that learns from natural-language reflection over execution traces.

Language models that externalize their prompts and recursively call themselves to process long context.