JustAI
Category: AI in Marketing
AI-native agentic marketing platform that helps enterprises automate personalization, experimentation, and decisioning at scale using reinforcement learning and AI agents. JustAI was founded in 2024. The company is led by Neha Mittal. Based in San Francisco, California, United States. Team size: 1-10. Total funding raised: $19.2M. Latest round: Series A. Key investors include Base10 Partners, Peak XV Partners, Y Combinator, Lobster Capital, Cloud Capital.
- Founded
- 2024
- Headquarters
- San Francisco, California, United States
- Team size
- 1-10
- Total funding
- $19.2M
Value proposition
Always-on AI agents that autonomously run the full marketing lifecycle — strategy, creative generation, decisioning, and measurement — replacing fragmented tools and manual A/B testing with a unified AI-native platform.
Products and solutions
JustAI Agentic Marketing Platform (Strategy Agent, Creative Agent, Decisioning Agent, Data Agent), Just Words (creative personalization engine), AI-powered lifecycle marketing automation for email, SMS, push notifications, and landing pages
Unique value
Proprietary two-layer system combining LLMs (for creative generation) with reinforcement learning (for optimization) that learns from each company's unique customer data — not generic internet knowledge — enabling 10x faster experimentation and always-on personalization.
Target customer
Enterprise marketing and growth teams at consumer, D2C, e-commerce, and B2B companies
Industries served
Consumer tech, E-commerce, B2B SaaS, D2C, EdTech, Fintech
Technology advantage
Proprietary reinforcement learning engine purpose-built for marketing (blends weak/strong signals, normalizes across time, closes the loop back to LLMs); agentic infrastructure with four specialized AI agents (Strategy, Creative, Decisioning, Data); YC W24 batch; Peak XV Surge 11
How they differentiate
Unlike general-purpose AI tools or traditional marketing automation platforms, JustAI built a proprietary reinforcement learning engine specifically for marketing that learns from each company's proprietary customer data (not public internet data), with four specialized AI agents working in concert to autonomously execute the full marketing lifecycle.
Main competitors
HubSpot Breeze, Salesforce Agentforce, Netcore Cloud, ActiveCampaign, Adobe Experience Platform
Key partnerships
Verbose (lifecycle strategy partner and Series A strategic investor), Y Combinator, Peak XV Surge program
Notable customers
Notion, Coursera, ClickUp, Grammarly, BeReal, Photoroom, Better, Namecheap, Tumblr, Acorns, Outschool, Handshake
Major milestones
Founded 2024 as Just Words, YC Winter 2024 batch, $1.7M seed round (Aug 2024), Rebranded to JustAI (2025), TechCrunch Disrupt 2025 Battlefield participant, $17M Series A led by Base10 (June 2026), 30+ enterprise customers
Growth metrics
30+ enterprise customers; 4-5 employees; 10x faster experimentation for customers; hiring for 12 roles post-Series A
Market positioning
Early-stage but fast-growing player in the emerging "agentic marketing" category, differentiated by a purpose-built RL engine for marketing decisions rather than general-purpose LLM wrappers. Competes against both incumbent marketing clouds (HubSpot, Salesforce, Adobe) and AI-native startups.
Geographic focus
United States (primary); expanding to India and Asia via Singapore entity
About Neha Mittal
Ex-Head of Product for Retention & Growth at Pinterest and Twitter (X); Co-founder of CityStructure; Founding Engineer at Sensorflow; Product & Engineering roles at Chan Zuckerberg Initiative and Goldman Sachs; M.S. in AI & Data Science from UC Berkeley
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Official website: https://www.getjust.ai/