GPTZero Tech Stack

AI-text detection platform for education and content verification

Technology, Information and Media New York City, New York 11–50 employees Privately Held

GPTZero operates a detection-first platform built on transformers, LlamaIndex, and RAG—tools typical of LLM classification systems. The engineering-forward hiring mix (11 engineers, research, and product roles) combined with active projects around LLM fine-tuning and multi-agent workflows suggests the core product is evolving from binary detection toward more nuanced content-verification capabilities. Key friction points (hallucination detection, accuracy at scale, low reply-bot adoption) point to a platform still calibrating real-world reliability.

Tech Stack 28 technologies

Core StackReact Next.js TypeScript Python Langchain RAG Express PostgreSQL AWS RDS Figma Sketch Adobe Creative Cloud PyTorch Node.js Tailwind CSS Pandas Databricks PySpark Amplitude JavaScript SQL LlamaIndex Transformers X Chrome DevTools Chrome HTML CSS

What GPTZero Is Building

◆Challenges

Detecting ai hallucinations
Scaling to millions of users
Ensuring ai detection accuracy
Restoring information quality
Improving growth funnel
Expanding ai detection platform
Detecting ai-generated content
Verifying content authenticity
Low ai detection reply bot usage
Low social engagement

▲Active Projects

Scalable ml training and inference systems
New product development
Ai-detection platform expansion
Expand ai detection and verification platform
Large language model training and fine-tuning
Multi-agent workflows using rag
Ai detection reply bot
Automation workflows
Short-form video content creation for gptzero social media
Prompt optimization for classification accuracy

Hiring Activity

Decelerating25 roles · 5 in 30d

Department

Engineering

Marketing

Design

Product

Research

Seniority

Senior

Intern

Mid

Junior

Director

Lead

Notable leadership hires: Social Lead, Head of Marketing

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About GPTZero

GPTZero is an AI-text identification platform based in New York that helps educators, content platforms, and internet users detect AI-generated content. The product surfaces information origin and reliability through a detection engine. The company operates at the intersection of responsible AI adoption and information quality, serving both institutional (education) and consumer audiences. At 11–50 employees with active hiring across engineering, marketing, and design, GPTZero is scaling product expansion and improving detection accuracy as core operational focuses.

HeadquartersNew York City, New York

Company Size11–50 employees

Hiring MarketsCanada, United States, United Kingdom

Frequently Asked Questions

What tech stack does GPTZero use?

GPTZero's core stack spans React, Next.js, TypeScript, and Python, with ML infrastructure including PyTorch, Transformers, LlamaIndex, RAG, Langchain, and PySpark. Backend runs on Node.js/Express and PostgreSQL on AWS RDS.

What is GPTZero working on?

Active projects include scalable ML training and inference, LLM fine-tuning, multi-agent RAG workflows, ai-detection platform expansion, and a detection reply bot. They are also building automation workflows and optimizing classification prompts for accuracy.