GBrain
Artificial Intelligence · LLM & Generative AI
Overview
Everyone on a team is prompting alone, each AI with its own notes and its own sign-ins. GBrain gives the team one brain to prompt together, and the team syncs it to ChatGPT, Claude, Cursor or any AI they choose.
Funding and backers
Backers
1
Y Combinator
Momentum
15/100
rising traction
Last sign of life
1 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Apr 2026
Went through Y Combinator
Tractionpublic signals, read monthly
Web presence
top 20%
of 133.2M domains by links, Common Crawl
Backed byfrom the funds' portfolios and accelerator catalogs
Investors in similar startupsfunds that back the companies most like this one
Similar startupsby what they do, their industry and backers
天秤AIでChatGPT・Claude・Geminiなど複数の最新AIを、最大6モデルまで同時検索！メール作成やSNS投稿など、出力を比較・統合して、自分に合ったAIを見つけよう！.
Puma is a mobile browser with built-in LLMs and wallets — a private local alternative to ChatGPT. 1M+ downloads on iOS and Android.
Flowith AI - Your Agentic Workspace for deep work. Experience next-gen AI collaboration with ChatGPT, Claude, DeepSeek and more. The…
The product feed layer for modern commerce. Ingest once, sync to Google, Meta, TikTok, Shopify, ChatGPT, and Claude from one API.
LogosGuard swaps your real names, addresses, and account numbers for placeholders before your prompt is sent to AI tools like ChatGPT and…
Close the gap between what AI can do and what your team can do with it. We help your team get more from Claude and ChatGPT, and build the…
Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
Y CombinatorVia a fund
6310 portfolio companies
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
News
Report
Report
Gbrain showcases fully implantable brain stimulation solution
Gbrain (Co-CEOs Byoung Kim and Sunggu Yang) participated in CES 2026, the world's largest IT and consumer electronics exhibition, held in Las Vegas, the United States, from January 6 to 9 (local time).Gbrain has focused on treatment gaps and unmet medical
Read more
Report
Gbrain to unveil fully implantable brain stimulation therapy solution 'Phin Stim' at CES 2026…
Gbrain Co., Ltd. (Co-CEOs Byoung Kim and Sunggu Yang) announced that it will participate in CES 2026, to be held in Las Vegas, the United States, from January 6 to 9, as part of the INCHEON-IFEZ Pavilion.Gbrain is a Korean startup founded in 2019 to devel
Read more
Report
At CES 2026, Gbrain's Phin Stim Signals a New Era for Implantable Brain Therapy
I spoke with neuroscientists from an Incheon, Korea-based startup that's looking to minimize the symptoms of epilepsy or Parkinson's disease.
Read more
Report
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
San Francisco
United States
HQ