/Companies

JustAI

YC W24

San Francisco, US · Founded 2024 · 4 employees · Hiring · 11 known investors

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A company focused on growth and productivity solutions that prioritizes customer needs over technology for its own sake.

Also known as Choice AI, Inc. · Choice · Choice AI · Choice, Choice AI, just words, Just Words · just words · Just Words

Founders & leadership· Y Combinator alumni (W24)

JustAI was founded in 2024 by Neha Mittal and Jeff Hara.

NMNeha Mittal
Neha MittalCEO and Co-founderNeha Mittal held product leadership roles at Pinterest and Twitter, and previously worked in product and engineering positions at the Chan Zuckerberg Initiative and Goldman Sachs. She co-founded CityStructure and was an early engineer at Sensorflow.
JHJeff Hara
Jeff HaraCofounder and CTOPreviously a senior machine learning engineer at Twitter and Automattic, with earlier ML work at Mercari and a stint as Founder-in-Residence at Foundations. He began his career at Stanford, working as a software engineer at the Center for the Study of Language and Information and as a research assistant in the Computer Graphics Laboratory.
NB
Nomondalai BatjargalCoS
KB
Kunal Baweja
MG
Matt GrossFounding Engineerformer

Investors · 11

Also in the syndicate · 2

Base 10leadBase10lead

Funding

SEC filings, press & company announcements

$17M disclosed across 1 round · 2026

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

The YC application· Winter 2024 batch

Alumni Q&A

How did your company get started? (i.e., How did the founders meet? How did you come up with the idea? How did you decide to be a founder?)
The founders met while leading Growth at Twitter, where they observed that small copy changes had outsized effects; one push notification edit added 800K users. Because each change took 3-6 months to ship, they built internal tools to automate the process and saw 20% additional user growth, then encountered similar problems at Pinterest before leaving to build justwords.ai.
What is your long-term vision? If you truly succeed, what will be different about the world?
The founders aim to automate the full lifecycle marketing loop—strategy, creation, optimization, and learning—using AI agents, with humans acting as orchestrators rather than operators. They envision campaigns that continuously test and improve themselves, shifting brands from batch campaigns to always-on, personalized cross-channel journeys, and giving marketers at any company size access to enterprise-level capabilities.

Summarized from the founders' answers on their Y Combinator profile.

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Companies working in the same space as JustAI.

Legal entities · 1

corporate structure
Choice AI, Inc.

In the news

Frequently asked questions

What does JustAI do?
A company focused on growth and productivity solutions that prioritizes customer needs over technology for its own sake.
Who founded JustAI?
JustAI was founded by Neha Mittal, Jeff Hara in 2024.
Who are JustAI's investors?
JustAI's investors include Creative HQ — The Incubator, J&T Ventures, Peak XV Partners, Surge, Y Combinator, Band of Angels, Base10 Partners, Cloud Capital and 1 more.
How much funding has JustAI raised?
JustAI has disclosed $17M raised across 1 round.
Where is JustAI headquartered?
JustAI is headquartered in San Francisco, US.