# Flint

> Flint is an AI-powered personalized learning platform built for K-12 schools. It lets teachers design AI tutors, activities, and assessments that adapt to each student across every subject - from language speaking practice to guided science labs - while giving educators real-time visibility into student progress without adding to their workload. Founded in 2023 and backed by Y Combinator, Flint raised a $15M Series A in November 2025 and serves hundreds of schools and hundreds of thousands of students worldwide.

- **Founded:** 2023
- **Headquarters:** New York, New York, United States
- **Founders:** Sohan Choudhury (Co-Founder & CEO), Jinseo Park (Co-Founder & CTO)
- **Team size:** ~30 employees
- **Products:** AI Tutors, Activity & Lesson Builder, Language Speaking Practice, Historical Role-Play & Simulations, Guided Science Labs & Diagram Feedback
- **Notable:** Raised a $15M Series A in November 2025 co-led by Basis Set Ventures and Patron., Grew to 400,000+ users across hundreds of schools worldwide., Powered 150,000+ AI learning activities.

## Products & services

- **AI Tutors** — Teachers design custom AI tutors for any subject that help students get assistance, review material, or be introduced to new topics - with transparent conversations teachers can monitor live.
- **Activity & Lesson Builder** — Create classroom activities, worksheets, quizzes, and handouts in seconds using AI, with custom rubrics and subject-specific tools.
- **Language Speaking Practice** — Conversational speaking practice across hundreds of languages with real-time AI feedback.
- **Historical Role-Play & Simulations** — Interactive scenarios like interviewing Shakespeare or running historical simulations to make learning immersive.
- **Guided Science Labs & Diagram Feedback** — Guided science experiments, diagram annotation, and graph drawing with automated feedback.
- **Classroom Analytics** — Real-time student analytics and insight into progress across activities, giving teachers visibility into how each student learns.
- **AI Video Generation** — Lets teachers create professional educational videos in minutes with no video editing experience required.

## Achievements

- Raised a $15M Series A in November 2025 co-led by Basis Set Ventures and Patron.
- Grew to 400,000+ users across hundreds of schools worldwide.
- Powered 150,000+ AI learning activities.
- Doubled revenue in six months - rare conversion for edtech pilots.
- Attracted backing from Blackboard co-founder Matt Pittinsky.
- A student-built AP exam prep activity became the platform's most popular feature.

## Latest updates

- **2025-11** — Announced $15M Series A co-led by Basis Set Ventures and Patron to personalize learning for the AI-native generation.
- **2025** — Launched AI video generation, letting teachers produce educational videos in minutes with no editing experience.
- **2025** — Expanded deployment with Cognita to 95,000 students across 110 schools.

## Links

- Website: https://flintk12.com
- LinkedIn: https://www.linkedin.com/company/flintk12
- Twitter/X: https://twitter.com/flintk12_
- YouTube: https://www.youtube.com/watch?v=kebXlseGTb4
- Instagram: https://www.instagram.com/flintk12/
- Facebook: https://www.facebook.com/flintk12/

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Profile page: https://yespress.io/flint
Published by YesPress — https://yespress.io
Last updated: 2026-07-21