Challenge Submission
Algorithm submissions via Grand Challenge platform for evaluation on Test Phases 1 and 2, producing pathology reports and structured reasoning artifacts.
Machine Learning/CORE Unranked
REG2026 2026
REG2026: Pathologist Reasoning-Guided Report Generation Challenge
REG2026 is a challenge focused on generating pathology reports from whole slide images (WSIs) while explicitly modeling pathologist-like diagnostic reasoning. It builds on REG2025 by introducing structured reasoning trajectories to improve clinical correctness and evaluation beyond surface-level text metrics, targeting agentic AI systems that plan, use tools, and make multi-step decisions.
Paper fit
Contribution paths
A strong submission should clearly identify its contribution and evaluate it appropriately.
Challenge Paper
Paper submission via OpenReview required for all participants, detailing methods, results, and reproducibility, to be eligible for prizes and final evaluation.
Code Repository
Public GitHub repository submission for reproducibility and result verification, required alongside the challenge paper.
Research areas in scope
01
Challenge Tracks
Pathology report generation from whole slide imagesDiagnostic reasoning trajectory modelingVisual grounding of clinical findingsWorkflow reasoning for pathology decision-makingAgentic AI for medical image analysis
Policies worth checking twice
- Participation requires a verified Grand Challenge account.
- Participants may not use challenge data for conference papers, preprints, or journal articles until the official challenge meta paper and proceedings are publicly available.
- Prior written permission from organizers is required for any exception to data usage restrictions.
- Each team is allowed up to 3 submissions in Test Phase 1 and only 1 submission in Test Phase 2.
- Debug phase allows up to 10 submissions for pipeline validation without using Test phase slots.
- Participants must submit both a challenge paper via OpenReview and a code repository for final evaluation eligibility.
- Evaluation combines 30% Test Phase 1 score and 70% Test Phase 2 score for final ranking.
Official sources
Compiled from the official call for papers. The organizers’ pages remain authoritative.
Official conference sitehttps://reg2026.grand-challenge.org/forum/topics/important-paper-submission-code
Last verified September 9, 2026