1st Place
Bellhop
Bellhop is an AI Chief of Staff for boutique hoteliers—right in their pocket.
financeagents
Rami Zeidan
Cerebral Valley · OpenAI · 2025-09-27 to 2025-09-28
GPT-5 Startup Hackathon NYC
Public gallery: every submissionEvent page ↗
- Projects
- 60
- Winners
- 6
- With repo
- 97%
- Prizes
- $50,000
Winners
2nd Place
Fathom
Fathom is a voice first, AI powered codebase assistant that eliminates the code comprehension barrier for developers.
dev toolsvoice
Kiitan Ayandosu, Clinton Imaro, Emmanuel Mokua
3rd Place
Ego
It's a way to maximize ROI on your credit cards...with a finance bro expert helping you out (aka me).
finance
Sean Thielen-Esparza
Finalist
Octopus Prime Labs
Uses gpt-5 and gpt-5-codex to find and refine unstructured renal dosing guidelines into python encoded clinical rules that then are served at the point of prescribing via HL7 compliant cds-services.
healthdev tools
Mark Gunnels, Lane Liles
Finalist
Asaply
Asaply is a lightweight checkout engine that uses GPT-5 to translate natural language into structured orders.
productivity
Chaira Harder
Finalist
Tesseract
Tesseract is Devops first coding space that lets you build and modify and deploy webapps with a canvas like design
dev tools
Yeabsira Mulugeta
All other submissions
54ContextCity // one codexierge to guide 'em all
- We built the ContextCity Codex concierge: an Expo mobile experience where Dartagnan guides travelers through city highlights.
voiceagents
Michael Chow
prls
For b2b AI companies to measure their visibility in LLM.
productivityagents
Jessie Han
Advicehub
AI clone with lip sync realtime - web search, computer use and sentiment analysis for loading state expression cloning
voiceagents
Mayank Singh
AeroAid - Natural Language for Disaster Relief Drone Operations
In disaster zones, every minute matters.
robotics/hardwareagents
Katherine Bi-Ji, Cobe Liu
Minam
Minam is the platform that democratizes API creation for knowledge creators.
financedev tools
Philip Park
Anote - Model Leaderboard
The Anote Model Leaderboard is a public API-driven benchmarking platform for evaluating large language models (LLMs) across diverse task types.
sciencedev tools
Natan Vidra
51EnglishTutor
Help the English learner to practice the oral and listening English; Ace the TOEFL Exam.
educationvoice
farmer ls
GPT NEGOTIATOR AGENT FOR COPYRIGHT
The GPT Negotiator Agent is an AI-powered financial & legal assistant for the music industry, designed to bridge the gap between creators and the institutions that manage their royalties, licensing, and financing.
financelegalcreative/music
Cas Weinbren
TEMPLATE IT!!!
Glimpse into a world without manual data entry.
productivityvision
Abhi Prajapati, Michael Zhou
Memory Playground
Memory Playground turns your everyday chats into things you actually want to look at: a front‑page newspaper of your life, a lovingly savage “Roast My Week,” tap‑to‑play trivia, a 3‑panel comic illustrated from your prom
creative/musicproductivity
Lewis Clements
Team Humor Genome
Team Humor Genome is building Meme Lab, an app that analyzes and remixes memes to explore different humor styles.
creative/musicvision
Michi Yamamoto
VAUNT
Luxury hospitality is booming, with Ritz, Marriott, and others betting big on branded residences and timeshares.
productivityagents
Irina Constantin, Razvan Mitre
MergeFund
MergeFund is a GitHub-native bounty platform that lets open-source repositories attach real money to open issues.
dev toolsfinance
Damien Johnson
Cinq
Some smaller, specialized models can outperform larger models on specific tasks.
agents
Richard Zhu
Vibe Onboarding
What if onboarding flows to products were friendly playful and optimized themselves over time?
agentsproductivity
Brett Goldstein
Rescue
Rescue is an iOS app that lets you schedule a convincing incoming call exactly when you want it.
voice
Yanir Nulman, Juliana B
Venue Agents
Project by Syed Shah (Syedwshah.nyc@gmail.com) & Oleg Savchuk (Oleg.savchuk12@gmail.com).
voiceagents
Oleh Savchuk, Syed Shah
Quick Overview
Quick Overview: PatentPilot is a multimodal, multi-agent co-pilot that turns raw invention disclosures (text + optional sketches) into attorney-ready patent draft packages in minutes rather than current slow process (~ 8
legalagents
Aura Yavary
HealthInvest AI
HealthInvest AI is a cutting-edge healthcare investment and consulting platform that leverages GPT-5's advanced reasoning capabilities
healthfinance
Alan Zhao
NorthStar AI
An end-to-end AI workflow where GPT-5 infers KPIs, Codex generates SQL/Python pipelines, and the Responses API orchestrates reporting-automating product analytics from PRD to polished report.
productivityagents
Vatsala Jha, manasa mangipudi, askani mohan krishna +1
Ether AI
Ether AI is a voice agent and assistant that helps cloud engineers deploy AWS resources.
voicedev tools
Carlos Cisneros
Eraser
Esther, the todo list that does itself
productivityagents
Ryan Jin, Sarina Li
Mustard Sandwich
The journey from a promising idea to an actual working prototype is long, involves weeks of research and slow development.
agentsproductivity
Armaan Jain, Aadesh Kheria, Vedanta Gawande
CampaignPulse
CampaignPulse: ViralIQ helps creators and marketers predict if their Reddit posts will go viral before publishing.
productivity
Sagar Shankaran, Sumanth Katapally
Neptune
Continuous ocean monitoring to fuse live sensor data from different sources and data types to action live incident reporting.
science
Nick Parkes
navNote
Using GPT-5 and Codex, we built our Operations Cloud to help our enterprise partners make sense of their data in a practical, actionable way.
productivity
Esmaeil Mousavi, Niklas Kennedy
rachael
https://mini.gullie.io/ mini dynamic relocation planner!
voiceproductivity
Rachael Annabelle Yong
ConvoFlow
ConvoFlow transforms networking conversations into high-quality, personalized follow-up emails using AI.
productivity
Ask Daysi
A comprehensive hackathon-ready personal healthcare discovery platform that combines provider/resource search with AI-powered recommendations (similar to Pulse) multilingual and voice/SMS included for digital literacy.
healthvoice
Jose Espinoza
GlowingStar.AI
GlowingStar.AI reimagines how teams connect with customers by bringing emotional intelligence into every interaction.
visionvoice
Chenyu Zhang
AI agent arena
searching for & rating AI agents
dev tools
Sophy Li
Code Guardian
Code Guardian is a VS Code extension that monitors your code in real time, detects vulnerabilities, suggests fixes, and applies them when you request all using GPT-5.
securitydev tools
Russell Van Curen, Thomas VanCuren
WDYM
"WDYM" - Agentic memory plus augmentation that lets AI understand what you really want.
agentsproductivity
Jasmine Poon, Jerry K
Swarm Saver
Give the average consumer the ability to deploy swarms of agents to save you money on your finances through finding and negotiating better insurance policies, loan rates, etc.
financeagents
Allen Park
BYOB
BYOB personalizes learning
education
Devansh Jain
ImprovAIze
“Most of us get nervous about singing in front of people—whether it’s karaoke night, the school recital, or even my own performances.
creative/musicagents
Ayush Kokande
Lingon Labs
We are trying to create a simpler user surface area for finance and accounting professionals to automate excel wrangling.
financedev tools
Philipp Thun-Hohenstein
Owner.com
Self-enriching, self-improving database for business intelligence.
productivityagents
Dakota
all about AI undertsanding people
agentsvision
Ujjwal Gupta
Claryn
Claryn is an agentic automated ML as a service platform that builds and improves machine-learning models for teams needing instant, auditable outputs without hand-coding pipelines as well as people who want to build pred
dev toolsagents
Claire Li, Riddhima Medatwal
Soultrace
Soultrace is an AI-powered application that bridges ancient Eastern wisdom with personal digital identity.
creative/music
Qiming Liu, Bingbing Ma, sophie Agre
CareerMojo
One of the biggest problems in today’s AI-driven recruitment is credibility and transparency, as a result of which the process efficiency also takes a hit.
productivity
Varshini Balaji
1ClickDivorce
1ClickDivorce is a web-based platform that simplifies and streamlines the separation process.
legal
Chetankumar Khatri
Cerebral Courtroom
Build a real-time, multi-agent courtroom simulator powered by GPT-5-Codex that allows users to present legal arguments and receive dynamic feedback from AI agents playing the roles of Judge, Opposing Counsel, and Jury.
legalagents
Forrest Pan
Pixora
Cursor for 2d Video generation
creative/music
Khagendra Khatri
StoryFactory
StoryFactory uses voice input to capture an outline brief and then a mesh of agents work together to turn it into a detailed brief
voiceagents
D C, Sam Ostrfeld
Composer
adds the /agents functionality to codex-cli tool
dev toolsagents
Kairi Wright, eric daison
Ninja
Miniapp fully onchain game
creative/music
Nelson Lai
Cogniforge
Cogniforge is an adaptive reinforcement learning environment that lets anyone program robots with plain English.
robotics/hardwarevision
Dhenenjay Yadav
Spawnlabs
Spawn the backbone of every software, live tools; apis, bots.
dev tools
Teddy Oweh
CoodYou
DoorDash for dining halls so students don’t need to leave their dorms when they need to lock in.
productivity
Hassam Gani
Manga
this is a Semantic Memory Chrome extension that creates a local-first browsing memory system powered by GPT-5.
productivity
Chizaram Chinedu
Paperclip
Paperclip is an app that turns any long-form content (e.g., research paper, Substack blog post) into a series of short-form videos designed to be educational and engaging at the same time.
education
Dexter
Building Dexter, a secure and searchable knowledge for consultants.
securitylegal
Brandon Pae, Daniel Choi