Contributions from users and sponsors help make Advent of Code possible. If your organization is interested in becoming a sponsor for Advent of Code 2025, please email sponsorship at [the Advent of Code domain name].
Advent of Code 2025 is made possible in part due to the following sponsors:
Happy coding and merry builds from Depot. We keep your pipelines fast, your caches warm, and your logs full of cheer, because the holidays are for shipping joy, not waiting on CI. Ship up to 55x faster with Depot.
Build products that make businesses faster and smarter. Work in Python and TypeScript with sharp, curious people who move fast. Main offices in New York and San Francisco. Hybrid.
Become more than a vibe-coder! Master backend development from start to finish on Boot.dev: the most addicting way to learn to code.
Axis - 404: Your application not found! <embedded, cloud, Machine learning, fullstack> Save our Christmas - apply now and join our team!
Infi - Kun jij de bomen door het bos z13n!? Puzzel verder en help boswachter Brian zijn bos in leven te houden in het donker van de Noordpool.
Sony Interactive Entertainment - Pushing the boundaries of Play! /\ () >< []
Picnic Technologies - A tech-first approach to online groceries. We are #hiring for Java, React, Python, DevOps, Angular and more!
Source Allies - Learning and leading go hand in hand. Join experts who solve problems w/ an ownership mindset. Make a difference on day one, not one day!
Lightricks - Nerdy and creative? Passionate about AI? We're hiring engineers, developers, and more!
Sentry - App monitoring software considered "not bad" by 4m developers.
Open Source Pledge - $4m raised for OSS maintainers so far. Let's do more
AIS - Think you've got what it takes? Try our 'Can You Hack It?' Challenge.
TNG Technology Consulting - We solve hard IT problems – all year round!
Criteo - Helping Santa prepare for the peak season since 2005