Cities Deliver · The Rockefeller Foundation + OpenAI Foundation
We are looking for city partners.
Start with a letter of interest.
Hadox is helping Polisplexity find city governments interested in exploring this call. Grants of US$500,000 to US$2 million support 24-month public-service projects. Learn what each side could bring, describe a possible service challenge and decide whether you would like a preliminary letter of interest. If there is a fit, we can investigate a project and possible joint application together.
First: express interest. Then: define possible work together. A project or application is a later decision.
Cities Deliver · US$500,000–2 million · 24 months · Official call ↗
Choose an option or press its letter on your keyboard.
Why do we ask this?
Your possible collaboration
Registering interest does not confirm a collaboration or submit an application to Cities Deliver.
Your city workspace
Where should we send your access code?
Use an inbox you can open now. We will name it on the next screen so you know where to look. This opens your private workspace for the preliminary letter.
Municipal partner brief · Hadox and Polisplexity
A short brief for the letter.
Tell us your starting point. This is preliminary interest, not a full proposal, an implementation commitment or a request for funding. We will clarify the possible work with you before any later application.
Interest registered
Your summary is in the Hadox workspace to explore a possible collaboration with Polisplexity. Registration does not confirm eligibility, collaboration or an application to the call.
Next, seven guided questions explain the FAQs and help us assess the service problem, municipal team, shared work, available resources and funding dependencies. No cash contribution is required. A preliminary letter becomes available when the reported challenge is ready; you review it before requesting a signature through Sign Hadox.
View my submitted summary
Share non-confidential information. This review supports a conversation with Hadox and Polisplexity.
What does Polisplexity contribute?
Software and AI design and development. Depending on the needs your city identifies, we can investigate resources for Integrated Territorial Intelligence, Civic Participation and Urban Scenarios, and Urban Interoperability Infrastructure.
The city contributes knowledge of the service and a team to help define, test and evaluate the improvement. Hadox facilitates introductions and initial preparation.
We are looking for needs that could be shared by more than one city. Scope and partners will be agreed after reviewing each case.
Explore Polisplexity ↗Funding tracks and participation
Seed supports a first city pilot: US$500,000 to less than US$1 million to develop and test a solution over 24 months. Scale offers US$1–2 million to expand a solution already piloted in a city with early results.
Funds cannot be transferred to the municipality or used to purchase physical equipment. The lead organisation and responsibilities will be confirmed after checking the requirements.
A proposal may include several cities. Each participating city needs a letter of intent from an authority over the relevant service at Round 1.
Rules and FAQs checked: 10 November 2026. Hadox does not represent the foundations running this call.