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Jul 2026Rachel Wang's LinkedIn profile says HeartByte is currently pivoting and exploring new directions.
SourceGenAI Interactive story. Creator write fictions 10x faster.
Company research
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
Overview
Storio (formerly HeartByte) is a San Francisco-based AI writing studio for fiction, fanfiction, scripts, and interactive stories. It helps creators brainstorm, outline, draft, revise, publish, and even generate audiobooks/visual-novel-style branching stories while keeping authors in control of their work.
Primary product
AI writing studio / co-pilot for fiction and interactive storytelling
Founded
2023
Headquarters
San Francisco, California, United States
Team size
1-10 employees
Industry
Technology, Information and Internet
Sub-industry
Generative AI fiction / AI writing platform
Business model
freemium
subscription
credit-based SaaS
Funding
Stage
Pre-seed
Total raised
$500K
Latest round
Pre-Seed · Feb 2024
Latest amount
$500K
Feb 2024 · Y Combinator
Jan 2024 · Y Combinator
People & investors
Work & culture
Creator-focused and community-oriented; public messaging emphasizes helping authors stay in control of their work, supporting privacy, and building a writing community around fiction.
Product & market
Pricing
Credit-based subscription with a free starter tier; paid monthly plans are Starter, Creator, Studio, and Infinite.
Differentiators
- —AI co-pilot tailored to fiction and long-form storytelling
- —Branching storylines and no-code visual novel creation
- —Audiobook generation
- —Community publishing/story catalog
- —Stated policy of not using user writing to train models
Technology
Firebase
NoSQL
OpenAI
Customers
fiction writers
web novel authors
fanfiction authors
interactive-story creators
hobbyist creators
Competitors
Sudowrite
Squibler
NovelAI
Fortelling
JotterPad
Scale & contact
Signals & risks
Latest news
aVenture · Jun 2026
Third-party company profile summarizing Storio as a generative AI fiction-writing platform founded in 2023 and backed by YC.
Storio blog · May 2026
Recent comparison post positioning Storio against a major AI writing competitor.
Storio · Jan 2025
Official rebrand and product explainer; outlines the fiction-writing copilot, interactive stories, free starter credits, and paid plans.
YouTube · Mar 2024
Video introduction to the product after the HeartByte-to-Storio rebrand.
Y Combinator on LinkedIn · Mar 2024
YC launch post describing HeartByte as an AI-assisted fiction-writing community founded by Rachel Wang and Xinyue Liang.
Jobs and careers at HeartByte
0 jobs at HeartByte
No open positions
Check back later for new openings