This year is the 10th anniversary. The past couple of years had tons of complaints on /r/adventofcode about how AI entries are dominating the leaderboards for most days. Today, o3 came out which performs extremely well of ARC and coding benchmarks.
NO: Advent of Code at adventofcode.com does not have a new set of 25 puzzles beginning Dec 1 2025
YES: Advent of Code still comes out, even if modified (such, as removing the leaderboard or having split leaderboards).
Update 2025-10-22 (PST) (AI summary of creator comment): The creator has indicated that resolving to 48% (a partial resolution) sounds reasonable given that Advent of Code 2025 will have only 12 days of puzzles instead of the originally stated 25 puzzles in the NO criteria.
1,000
3.00@MRME I think so? If it's wrong I'll ask mods what can be done.
Why did the number of days per event change? It takes a ton of my free time every year to run Advent of Code, and building the puzzles accounts for the majority of that time. After keeping a consistent schedule for ten years(!), I needed a change. The puzzles still start on December 1st so that the day numbers make sense (Day 1 = Dec 1), and puzzles come out every day (ending mid-December).
Pretty funny :)
@TonyGao How this will be resoved?
In the market description there is a statement:
> NO: Advent of Code at adventofcode.com does not have a new set of 25 puzzles beginning Dec 1 2025
Now the author of advent of code say that where will be only 12 days of puzzles (instead of 25 as it was in the previous years)
https://hachyderm.io/@ericwastl/115415473413415697
@TonyGao How are you planning to resolve this market because of the announced changes?