Timeline
Keep track of the key milestones for your participation in the Anti-BAD Challenge. All deadlines are 11:59 PM UTC.
| Event | Date |
|---|---|
| Competition registration opens | Oct 21, 2025 |
| Development phase starts | Nov 7, 2025 |
| Development phase ends | Jan 31, 2026 |
| Test phase starts | Feb 1, 2026 |
| Test phase ends | |
| Submission evaluation and winner announcement |
Development Phase
November 7, 2025 – January 31, 2026
The development phase is open to all registered participants. During this period, you can:
- Access the development data and backdoored models for each task from the Getting Started page.
- Develop and refine your defense strategies.
- Submit predictions to receive feedback.
- Participate in any number of tasks.
This phase is designed for experimentation, iterative improvement, and preparation for the final evaluation. For submission details, see the Terms & FAQs page.
Test Phase
February 1 – 9, 2026 (Extended due to Codabench platform issues)
All teams who participated in the development phase are eligible to participate in the test phase. New registrations will be closed once the test phase begins. Participants will:
- Receive unseen test data.
- Submit both results and executable code for verification.
- Compete for the final leaderboard ranking.