2025 has been a turbulent year for international development. Aid budgets shrank, climate finance demands surged, and political pressure on development agencies – particularly in the United States – intensified. Against this backdrop, at Publish What You Fund we redoubled our efforts to defend open data, strengthen transparency norms, and equip policymakers, civil society and citizens with the information they need to protect development effectiveness. The core pillars of our new strategy – to make aid transparency bigger, better and louder – shaped our interventions throughout the year, from climate finance to localisation to development finance. Here we round up our key activities and achievements.