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Blocktool
AddedApr 26, 2023
UpdatedJun 18, 2026
Blocktool

Blocktool

A single platform to monitor, analyze and optimize a Large Language Model (LLM) application.

Founded
2022
Overview
Compare
Fundraising
Employees

Blocktool is an early-stage startup from YCombinator's 2023 batch, founded in 2022 by Edouard Godfrey and Nicolas Bustamante. The company offers a platform to monitor, analyze, and optimize Large Language Model (LLM) applications, serving as a unified playground to replay conversations with different models to enhance quality and reduce costs.

Blocktool has quickly gained attention for its innovative approach in the AI and machine learning space. By providing a comprehensive tool for LLM optimization, the company addresses critical needs in the industry, potentially transforming how developers and businesses manage and improve their AI models.

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Blocktool - Quick Facts

Who are Blocktool's competitors?

Companies similar to Blocktool include Defog.ai, Vellum, Baseplate and GradientJ.

When was Blocktool founded?

Blocktool was founded in 2022.

When was Blocktool's last funding round?

Blocktool's most recent funding round was for $500k (USD) in April 2023.

How much has Blocktool raised to-date?

As of Apr 26, 2023, Blocktool has raised a total of $500k (USD).

How many employees does Blocktool have?

Blocktool has 2 employees as of Sep 1, 2025.

Blocktool - Classification

Ownership
  • Venture Capital
Technology
  • AI
  • Data
  • GenAI
Revenue
  • Recurring
Customer
  • Enterprise