We define and advance data and environments to push the AI frontier

Built on 10+ years of pioneering research in data-centric AI,
including 250+ publications and benchmarks.

building benchmarks and collaborating with

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key research areas

Vision and impact

We help labs advance frontier models by working with domain experts to design and build complex, realistic datasets that drive model performance.

initiatives

Community and open science

Open benchmarks, conversations, and research for real-world AI performance.

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Open Benchmarks Grants

Backed by a $3M commitment, the program funds
open-source datasets, benchmarks, and evaluation artifacts that shape how frontier AI systems are built
and evaluated.

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Bench Talks

Our podcast series at the intersection of AI evaluation, data quality, and real-world impact.
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Reading Group

A recurring forum for researchers and practitioners to explore the latest frontier developments in AI while building meaningful connections within the community.

DEEP RESEARCH Expertise

Technical advisors and distinguished affiliates

Stephen Bach headshot

Stephen Bach

Brown University
Eliot Horowitz Assistant Professor, Computer Science Department
Jason Fries headshot

Jason Fries

Stanford University
Assistant Professor of Biomedical Data Science and of Medicine
Jared Dunnmon headshot

Jared Dunnmon

Co-Founder & Chief Scientist, Stealth Startup
Prev. Dir. of AI at DIU
Fred Sala headshot

Fred Sala

Chief Scientist
,
Snorkel AI
Assistant Professor @ University of Wisconsin-Madison
Chris Ré headshot

Chris Ré

Co-Founder
,
Snorkel AI
Professor @ Stanford University
Ludwig Schmidt headshot

Ludwig Schmidt

Stanford University · LAION
Stanford researcher and LAION collaborator
Karthik Narasimhan headshot

Karthik Narasimhan

Princeton University
Professor of Computer Science
Yu Su headshot

Yu Su

Ohio State University
Associate Professor of Computer Science and Engineering
Lewis Tunstall headshot

Lewis Tunstall

Hugging Face
Machine Learning Engineer
PUBLICATIONS

Browse research blogs
and academic papers

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Snorkel teams with Microsoft to showcase new AI research at NVIDIA GTC
Blog
Snorkel teams with Microsoft to showcase new AI research at NVIDIA GTC

Microsoft infrastructure facilitates Snorkel AI research experiments, including our recent high rank on the AlpacaEval 2.0 LLM leaderboard.

Learn more about Snorkel teams with Microsoft to showcase new AI research at NVIDIA GTC
How Skill-it! enables faster, better LLM training
Blog
How Skill-it! enables faster, better LLM training

Humans learn tasks better when taught in a logical order. So do LLMs. Researchers developed a way to exploit this tendency called “Skill-it!”

Mar 12, 2024
Learn more about How Skill-it! enables faster, better LLM training
Large language model training: how three training phases shape LLMs
Blog
Large language model training: how three training phases shape LLMs

Training large language models is a multi-layered stack of processes, each with its unique role and contribution to the model’s performance.

Feb 27, 2024
Learn more about Large language model training: how three training phases shape LLMs
LoRA: Low-Rank Adaptation for LLMs
Blog
LoRA: Low-Rank Adaptation for LLMs

Low-rank adaptation (LoRA) lets data scientists customize GenAI models like LLMs faster than traditional full fine-tuning methods.

Feb 21, 2024
Learn more about LoRA: Low-Rank Adaptation for LLMs
New benchmark results demonstrate value of Snorkel AI approach to LLM alignment
Blog
New benchmark results demonstrate value of Snorkel AI approach to LLM alignment

Snorkel researchers’ state-of-the-art methods created a 7B LLM that ranked 2nd, behind only GPT-4 Turbo, on AlpacaEval 2.0 leaderboard.

Jan 24, 2024
Learn more about New benchmark results demonstrate value of Snorkel AI approach to LLM alignment
Retrieval augmented generation (RAG): a conversation with its creator
Blog
Retrieval augmented generation (RAG): a conversation with its creator

Snorkel CEO Alex Ratner spoke with Douwe Keila, an author of the original paper about retrieval augmented generation (RAG).

Jan 16, 2024
Learn more about Retrieval augmented generation (RAG): a conversation with its creator
Characterizing the Impacts of Semi-supervised Learning for Weak Supervision
Labeling training data is a critical and expensive step in producing high accuracy ML models, whether training from scratch or fine-tuning. To make labeling more efficient, two major approaches are programmatic weak supervision (WS) and semi-supervised learning (SSL). More recent works have either explicitly or implicitly used techniques at their intersection, but in various complex and ad hoc ways. In this work, we define a simple, modular design space to study the use of SSL techniques for WS more systematically. Surprisingly, we find that fairly simple methods from our design space match the performance of more complex state-of-the-art methods, averaging...
Research Paper
Characterizing the Impacts of Semi-supervised Learning for Weak Supervision

Labeling training data is a critical and expensive step in producing high accuracy ML models, whether training from scratch or fine-tuning. To make labeling more efficient, two major approaches are programmatic weak supervision (WS) and semi-supervised learning (SSL). More recent works have either explicitly or implicitly used techniques at their intersection, but in various complex and ad hoc ways. In…

Jan 16, 2024

Jeffrey Li, Jieyu Zhang, Ludwig Schmidt & Alexander Ratner

Learn more about Characterizing the Impacts of Semi-supervised Learning for Weak Supervision
Promises and Pitfalls of Threshold-based Auto-labeling
Creating large-scale high-quality labeled datasets is a major bottleneck in supervised machine learning workflows. Threshold-based auto-labeling (TBAL), where validation data obtained from humans is used to find a confidence threshold above which the data is machine-labeled, reduces reliance on manual annotation. TBAL is emerging as a widely-used solution in practice. Given the long shelf-life and diverse usage of the resulting datasets, understanding when the data obtained by such auto-labeling systems can be relied on is crucial. This is the first work to analyze TBAL systems and derive sample complexity bounds on the amount of human-labeled validation data required for guaranteeing...
Research Paper
Promises and Pitfalls of Threshold-based Auto-labeling

Creating large-scale high-quality labeled datasets is a major bottleneck in supervised machine learning workflows. Threshold-based auto-labeling (TBAL), where validation data obtained from humans is used to find a confidence threshold above which the data is machine-labeled, reduces reliance on manual annotation. TBAL is emerging as a widely-used solution in practice. Given the long shelf-life and diverse usage of the resulting…

Jan 11, 2024

H. Vishwakarma, et al.

Learn more about Promises and Pitfalls of Threshold-based Auto-labeling
Stanford professor discusses exciting advances in foundation model evaluation
Blog
Stanford professor discusses exciting advances in foundation model evaluation

Snorkel CEO Alex Ratner chatted with Stanford Professor Percy Liang about evaluation in machine learning and in AI generally.

Jan 02, 2024
Learn more about Stanford professor discusses exciting advances in foundation model evaluation
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