Reflex was founded by Nikhil Rao, Alek Petuskey in 2023.

Who are Reflex's investors?

Reflex's investors include Lattice Capital, Abstract Ventures, Ansa Capital, BoxGroup, Lux Capital, Outset Capital, PICUS CAPITAL, Y Combinator and 9 more.

Where is Reflex headquartered?

Reflex is headquartered in San Francisco, US.

Reflex

YC W23

San Francisco, US · Founded 2023 · 10 employees · Hiring · 17 known investors

Find your way into Reflex

Paths you didn't know you had: your email and LinkedIn already hold routes to the Reflex team. We find them for you
2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

Reflex is a platform for building and deploying enterprise applications in Python, combining framework, infrastructure, and data connectivity in a single unified system. It enables teams to develop, deploy, and manage production applications without fragmented tooling or multiple specialized roles.

Also known as Pynecone, Inc. · Pynecone

AI & Machine Learning Cloud Computing Data & Infrastructure Developer Tools Enterprise Software SaaS Sector Agnostic Artificial Intelligence Open Source Web Development InfrastructureUnited States of AmericaAmerica / Canada

Founders & leadership· Y Combinator alumni (W23)

Reflex was founded in 2023 by Nikhil Rao and Alek Petuskey.

Nikhil Rao Cofounder, CEOFounder of Reflex, a platform for building and deploying enterprise applications in Python with integrated framework, infrastructure, and data connectivity.

Alek Petuskey CofounderAlek Petuskey is a co-founder of Reflex, a platform for building and deploying enterprise applications in Python.

Masen FurerFounding Engineer

Simon YoungFounding Engineer

Tom GotsmanFounding Engineer

JH TevisGTM Lead

Jackie TungFounding Engineerformer

Investors · 17

Lattice Capital✓ confirmed by ReflexDover · $500K – $1.5M

How we know: the company's own site · Not right? Tell us

Abstract Ventureslisted by Abstract VenturesSan Francisco · $250K – $750K

How we know: Abstract Ventures's portfolio page · open dataset · 5k.vc investor directory · Y Combinator's founder network · Not right? Tell us

Ansa Capitallisted by Ansa CapitalNew York · $5M – $15M

BoxGrouplisted by BoxGroupNew York · $250K – $1M

How we know: Y Combinator's founder network · boxgroup.com · open dataset · 5k.vc investor directory · Not right? Tell us

Lux Capitallisted by Lux CapitalNew York · $100K – $100M

How we know: Lux Capital's portfolio page · a partner's Signal profile · Y Combinator's founder network · Not right? Tell us

Outset Capitallisted by Outset CapitalSan Francisco · $200K – $400K

How we know: Outset Capital's portfolio page · the VCSheet dataset · Y Combinator's founder network · Not right? Tell us

PICUS CAPITALlisted by PICUS CAPITALMunich · $100K – $5M

How we know: PICUS CAPITAL's portfolio page · a partner's Signal profile · the VCSheet dataset · Y Combinator's founder network · 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

Alpine Space VenturesreportedMunich · $11M – $22M

How we know: press coverage · Not right? Tell us

Alt CapitalreportedSan Francisco · $1M – $10M

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

ATX Venture PartnersreportedAustin · $250K – $5M

How we know: funding news · Not right? Tell us

Bayern KapitalreportedLandshut · $275K – $55M

How we know: press coverage · Not right? Tell us

Collaborative FundreportedNew York · $500K – $1M

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

Databricks VenturesreportedSan Francisco

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

HTGFreportedBonn · $1.1M

How we know: press coverage · Not right? Tell us

Kleiner PerkinsreportedMenlo Park · $500K – $15M

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

Standard CapitalreportedSan Francisco

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

Funding

SEC filings, press & company announcements

Undisclosed amountSeedJun 2022
Source ↗

Source: company announcements and press reports — follow each round's link for the claim.

Related companies · 8

PlotlyPlotly develops open-source data visualization libraries and analytics platforms—including its Plotly graphing library and Dash app framework—for analysts, engineers, and data scientists building interactive charts, dashboards, and data apps. It also offers AI-native and enterprise products for deploying and managing these apps in the cloud or self-hosted behind a firewall.

refineRefine is an open-source web application framework that helps organizations build web applications faster with fewer resources. The company develops the open-core framework and related ecosystem products.

BrowserStackBrowserStack provides a cloud-based software testing platform for scaling test automation across 3,500+ browser-device combinations on a real device cloud, aimed at development and QA teams. Its offerings cover cross-browser and browser automation testing, WCAG accessibility compliance testing, AI-driven test management, and visual testing, with integrations for major frameworks and CI/CD pipelines.

Sails Co.The Sails Company develops open-source web and mobile frameworks alongside professional services for server-side development using JavaScript and Node.js. They offer consulting, design, and implementation support to help developers and organizations build enterprise-grade applications more efficiently.

DataCampDataCamp is a learning platform for teams that teaches data and AI skills through hands-on coursework accessible via web browser and mobile app. It serves enterprise customers and development teams seeking to build technical capabilities.

Stably AI (Orca)Orca is an agent development environment (ADE) that runs multiple AI code agents (Claude Code, Codex, OpenCode, Grok) side by side in isolated worktrees with built-in terminals, file editor, and git tracking for software developers. It includes a mobile companion app for iOS and Android to manage agent work remotely.

DesignbaseDesignbase offers an interface design tool that converts visual designs into code, aimed at small teams and resource-constrained organizations.

TriplitTriplit provides a database and state management system for web applications that handles data persistence and real-time synchronization across clients.

Companies working in the same space as Reflex.

Legal entities · 1

corporate structure

Pynecone, Inc.

In the news

Reflex: AI app builder for creating production-grade web apps entirely in Pythonycombinator.com · Oct 2025

Pynecone: Web apps in pure Python 🐍ycombinator.com · Jan 2023

Frequently asked questions

What does Reflex do?: Reflex is a platform for building and deploying enterprise applications in Python, combining framework, infrastructure, and data connectivity in a single unified system. It enables teams to develop, deploy, and manage production applications without fragmented tooling or multiple specialized roles.
Who founded Reflex?: Reflex was founded by Nikhil Rao, Alek Petuskey in 2023.
Who are Reflex's investors?: Reflex's investors include Lattice Capital, Abstract Ventures, Ansa Capital, BoxGroup, Lux Capital, Outset Capital, PICUS CAPITAL, Y Combinator and 9 more.
Where is Reflex headquartered?: Reflex is headquartered in San Francisco, US.