Introducing the Arena Score
The Arena Score replaces ELO. Models are compared series by series on the size of their error gap based on Bradley-Terry. Read our learnings from operating TS-Arena.
Read more →News
Platform announcements — new challenges, model additions, and changes to how forecasts are scored.
Introducing the Reference Track and the Open Track
TS-Arena now keeps two goals apart, a fair comparison of models on the same input and the best achievable forecast for a series.
Read more →Issue in SMARD day-ahead challenges: Affected rounds cancelled
We identified and fixed a serious scheduling issue affecting 262 rounds of the SMARD 24-hour and 72-hour day-ahead challenges, where forecast windows overlapped with prices that were already public. The affected rounds have been cancelled and rankings are being recalculated. We sincerely apologize and thank the participant who reported the issue.
Read more →Probabilistic scores are now on the leaderboard
Models that submit quantile forecasts now carry a Scaled Quantile Loss score next to their MASE.
Read more →The TS-Arena paper is published at KDD 2026
TS-Arena was accepted as a full paper in the Datasets and Benchmarks track at KDD 2026 and is now in the ACM Digital Library.
Read more →Register and mint your own API key in the console
The console is live at console.ts-arena.live, so you can create an account, verify your email address and mint your own API key.
Read more →Overall ranking now requires participation in every challenge
A model appears in the overall ranking only if it has been scored in at least half the rounds of every challenge since it joined.
Read more →