OpenAI Build Week
A week-long online hackathon run by OpenAI in July 2026, in which participants built applications with Codex and the GPT-5.6 model family across four tracks.
- Year
- 2026
- Organizer
- OpenAI
- Dates
- Jul 13, 2026 – Jul 21, 2026
- Mode
- online
- Winning projects
- 8
- Participants
- 46,725
- Platform
- Devpost
Winners
1st Place
- Echo Canvas1st Place | Developer ToolsA browser workbench for authoring, hearing, and explaining interactive spatial acoustics before committing to a game-engine-like audio pipeline.OpenAI CodexNext.jsOpenAI
- Mechanica — A Digital Museum of Ancient Chinese Machines1st Place | EducationFour lost ancient Chinese machines reborn as physically-simulated, source-cited interactive exhibits — with a GPT-5.6 docent that refuses to hallucinate.OpenAI CodexGitHub Actionsi18next
- Second Voice1st Place | Apps for Your LifeA zero-training AI communication aid that turns unclear speech from people with dysarthria into clear, confirmable sentences using GPT-5.6, then speaks them aloOpenAI CodexOpenAI
- veTriage—Safety-First Vet Phone Triage PWA Built in a Week1st Place | Work & ProductivityBuilt by a veterinarian & practice owner with no coding experience, this app turns clinical triage expertise into a structured safety net for vet clinic staff.ChatGPTCloudflareOpenAI Codex
2nd Place
- AirBridge for Windows2nd Place | Apps for Your LifeAirBridge turns an AirPlay-compatible speaker into a practical wireless audio output for a Windows PC and puts a GPT-5.6 agent in the control loop.Apple TVCGoogle Chrome
- Dấu - See your Vietnamese tones2nd Place | EducationDấu makes Vietnamese tones visible. Record a word, compare your pitch with validated contours, see the meaning your tone created, and get the exact physical fixChatGPTOpenAI Codex
- Pulse2nd Place | Work & ProductivityPharmacies are disappearing from the Bronx. Overdoses are spiking. Pulse fuses LinkUp, 311, and CMS data to predict where the next pharmacy desert forms and senOpenAI CodexDockerFastAPI
- Sentinel2nd Place | Developer ToolsPredict, Prevent, InterveneOpenAI CodexDockerFastAPI