Timeline
Keep track of the key milestones for your participation in the Anti-BAD Challenge. All deadlines are 11:59 PM AoE (Anywhere on Earth).
| 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 | Feb 7, 2026 |
| Submission evaluation and winner announcement | Feb 8, 2026 onward |
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 – 7, 2026
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.