Baserun

Baserun YC Application

Summer 2023Active

Baserun went through Y Combinator in the Summer 2023 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch
Summer 2023
Industry
B2BEngineering, Product and Design
Team size
2
Status
Active
Launched
2023

Founders

  • Effy Zhang
    Effy ZhangFounder

What Baserun does

LLMs are incredibly powerful, but latency, cost, and unpredictable outputs have made productionizing LLM features challenging. Baserun is a testing and observability platform that helps AI teams streamline their development cycle from identifying an issue to evaluating their solution, so that teams ship faster with confidence.

Baserun's YC application, reconstructed

Y Combinator application

Baserun, Summer 2023 batch. The real form questions, answered from public data.

  1. Founders2
  2. Company7
  3. Progress7
  4. Idea4
  5. Equity3
  6. Curious2
  7. Batch Preference1

Company

Company name

Baserun

Describe what your company does in 50 characters or less.

Observability and evaluation platform for LLM apps

What is your company going to make? Please describe your product and what it does or will do.

We built a testing and observability platform specifically for teams building on large language models. Our product helps AI teams identify issues with latency, cost, and output quality in LLM features, then quickly evaluate fixes. It streamlines the development cycle so teams ship faster with confidence.

Where do you live now, and where would the company be based after YC?

We live and work in San Francisco, CA, and plan to keep the company based here after YC.

Explain your decision regarding location.

San Francisco is where both of us are based, and it's the center of the AI and developer tooling ecosystem we're serving. Staying here lets us stay close to early customers and other AI startups.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

Frequently Asked Questions

Is this the real Baserun YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Baserun's public data (launch notes, founder backgrounds, product description). It shows how a company like Baserun would present itself to YC, not the text they submitted.

What YC batch was Baserun in?

Baserun was part of the Y Combinator Summer 2023 batch.

Who founded Baserun?

Baserun was founded by Effy Zhang.

What does Baserun do?

Observability and evaluation platform for LLM apps.

How do I read the full reconstructed application?

Create a free Round Funded account. The full 26-answer version of Baserun's application, and every other YC batch, is in YC Insights.

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