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DAGWorks Inc.

AcquiredYC W23

San Francisco, US · Founded 2022 · 2 employees · 7 known investors

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DAGWorks provides open-source Python frameworks—Hamilton for ML and data pipelines and Burr for AI agent applications—that include built-in observability, lineage tracking, and versioning to help developers monitor and maintain AI systems in production.

AI & Machine LearningDeveloper ToolsEnterprise SoftwareAIOpsArtificial IntelligenceGenerative AIOpen SourceUnited States of AmericaAmerica / CanadaFully Remote

Founders & leadership· Y Combinator alumni (W23)

DAGWorks Inc. was founded in 2022 by Stefan Krawczyk and Elijah ben Izzy.

SKStefan Krawczyk
Stefan KrawczykCo-founder · Chief Executive Officer2022–2025Stefan Krawczyk has held roles in data and machine learning engineering at LinkedIn, Nextdoor, Idibon, and Stitch Fix, most recently leading the Model Lifecycle team at Stitch Fix where he worked on model productionization processes. He co-created the Hamilton framework and founded DAGWorks Inc. to develop it further.
EBElijah ben Izzy
Elijah ben IzzyCo-founder · Chief Technology Officer2022–2025Elijah ben Izzy previously led machine learning platform development at Stitch Fix, where he built tools serving over 100 data scientists. He is now founder of DAGWorks Inc. and maintains Hamilton, an open-source dataflow management framework.

Investors · 7

StartXlisted by StartXStanford · $10K – $1M

How we know: StartX's portfolio page · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

Andreessen HorowitzreportedMenlo Park · $500K – $50M

How we know: Y Combinator's founder network · Not right? Tell us

Builders FundreportedSan Francisco · $20M – $200M

How we know: Y Combinator's founder network · Not right? Tell us

Capitalize VCreportedChicago · $100K – $200K

How we know: Y Combinator's founder network · Not right? Tell us

Firestreak Venturesreported

How we know: Y Combinator's founder network · Not right? Tell us

The YC application· Winter 2023 batch

What they told YC

Describe what your company does in 50 characters or less.
A collaborative machine learning ETL platform aimed at data scientists.
What is your company going to make? Please describe your product and what it does or will do.
The founders are building an open-core platform that lets data science teams develop, productionize, and maintain machine learning ETLs on top of a company's existing MLOps and data infrastructure.

Summarized from the founders' answers on their Y Combinator profile.

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OneCLIOneCLI is an open-source credential gateway that secures AI agents by injecting API keys at the network layer, preventing agents and LLMs from accessing credentials directly. It works across any agent framework and enforces policies at the proxy level for endpoint blocking, rate limiting, and approval workflows.
OpenPipeOpenPipe provides an SDK that automatically captures prompt-completion pairs from existing LLM providers and converts them into fine-tuned models that are faster and more cost-effective to run.
OpenlayerOpenlayer provides a platform for testing, monitoring, and managing AI models across the development and production lifecycle. The platform serves AI-driven teams ranging from startups to enterprises seeking reliable and trustworthy AI system deployment.

Companies working in the same space as DAGWorks Inc..

Legal entities · 1

corporate structure
DAGWorks Inc.

In the news

DAGWorks: Avoid Machine Learning Pipeline horror stories 😱ycombinator.com · Mar 2023

Frequently asked questions

What does DAGWorks Inc. do?
DAGWorks provides open-source Python frameworks—Hamilton for ML and data pipelines and Burr for AI agent applications—that include built-in observability, lineage tracking, and versioning to help developers monitor and maintain AI systems in production.
Who founded DAGWorks Inc.?
DAGWorks Inc. was founded by Stefan Krawczyk, Elijah ben Izzy in 2022.
Who are DAGWorks Inc.'s investors?
DAGWorks Inc.'s investors include Gaingels, StartX, Y Combinator, Andreessen Horowitz, Builders Fund, Capitalize VC, Firestreak Ventures.
Where is DAGWorks Inc. headquartered?
DAGWorks Inc. is headquartered in San Francisco, US.