Introducing
Development Finance Observatory
A robust platform that tracks how development gets financed globally.
A one-stop source for reliable development finance data and tools to understand and visualize them.
Built on ONE Data infrastructure.
Featured
The Climate Finance Files
According to official data, countries hit the US$ 100 billion goal three years in a row. That data mostly records promises to pay.
- In 2024, developed countries paid US$ 60.4 billion against the US$ 101.6 billion in public climate finance recorded in official statistics.
- In 2024, 64% of bilateral climate finance was provided by countries that have since cut, or plan to cut, their Official Development Assistance (ODA) budgets.
- Eight countries, home to half the people living in extreme poverty, receive 25% of the climate finance paid to developing countries.
“ONE Data is exactly the kind of infrastructure the development sector needs. It transforms the nightmare of fragmented financing data into data that is interoperable and accessible, and can drive real change.”
Prem Ramaswami, Data Commons Product Manager, Google
“If you can't measure it, you can't manage it. ONE data enables an evidence-based approach. They turn complex issues into intelligible and digestible data sets, allowing for an informed debate and decisive action.”
Omar Ben Yedder, Group Publisher, African Business
“Our work with ONE Data brings speed and clarity to a complex debate around ODA. It makes it easier to translate research into practical tools that inform real-time policy choices.”
Davide Rasella, Head of the Global Health Impact Assessment and Evaluation Group, ICREA Research Professor, Barcelona Institute for Global Health (ISGlobal)
Get into our data
Analysis
Briefs and papers that help you understand what the data means — and why it matters.
Ten Questions Shaping the Global Fund’s Future
With the selection of Ambassador Mark Dybul as its incoming Executive Director, the Global Fund faces a set of questions about its purpose, priorities and partnerships.
The current Ebola outbreak could become the largest on record. Here’s what we’re tracking.
The Ebola outbreak in the Democratic Republic of Congo (DRC) is the second deadliest on record, and it is still growing. If it isn’t brought under control, it could become the worst. A strain with no licensed vaccine is driving it, in a country whose health system was already stretched before the first case. Why has it been so hard to contain and what does the response need?
Child mortality fell to the lowest point in human history. Then progress stalled.
Child mortality fell to the lowest point in human history. Then progress stalled, and a child's odds of reaching five still depend on where they are born.
Is the UN Security Council fit for today's changing world?
The world has changed in major ways over the past 80 years, but the UN Security Council has largely remained unchanged. That has implications for its relevance and credibility in a changing world.
Data Explorers
Live views of development data, continuously updated as new figures land. Check them, don't just read them.
Official Development Assistance (ODA) Dashboard
See how much aid each donor gives, where it goes, and what it funds, using OECD data.
Human Development Dashboard
Explore how EU Member States and institutions allocate human development ODA across these across recipients.
Net Flows Dashboard
Explore data on net finance flows for developing countries
Developer Docs
APIs, packages, and research utilities built for teams that need to go deeper.
ODA Reader
Download OECD DAC and AidData aid data in Python, from donor totals to project-level records.
resolvekit
Resolve messy country and entity names and codes to canonical entities in Python.
IMF Reader
Fetch IMF World Economic Outlook and Special Drawing Rights data in Python as tidy DataFrames.
WHO WE ARE
ONE Data is the open data platform built by ONE.
We make complex development data easier to find, understand, and use — through open data, independent analysis, and practical tools.
Open access. Clear evidence. Built for action.