BioASQ - A challenge in large-scale biomedical semantic indexing and question answering (https://www.bioasq.org/workshop2025)

CheckThat! - Lab on Subjectivity, Fact-Checking, Claim Extraction & Normalization, and Retrieval (https://checkthat.gitlab.io)

ELOQUENT - Evaluation of generative language model quality (https://eloquent-lab.github.io)

eRisk - Early Risk Prediction on the Internet (https://erisk.irlab.org)

EXIST - sEXism Identification in Social neTworks (https://nlp.uned.es/exist2025/)

ImageCLEF - Multimodal Challenge in CLEF (https://www.imageclef.org)

JOKER - Humour in the Machine (https://www.joker-project.com)

LifeCLEF - Challenges on Species Presence Prediction and Identification, and Individual Animal Identification (https://www.lifeclef.org)

LongEval - Longitudinal Evaluation of Model Performance (https://clef-longeval.github.io)

PAN - Stylometry and Digital Text Forensics (https://pan.webis.de)

qCLEF - Quantum CLEF (https://qclef.dei.unipd.it/)

SimpleText - Simplify Scientific Text (and Nothing More) (https://simpletext-project.com)

TalentCLEF - Skill and Job Title Intelligence for Human Capital Management (https://talentclef.github.io/talentclef/)

Touché - Argumentation Systems (https://touche.webis.de)

• Participants agree to join the evaluation activities as being organised under this CLEF 2025 edition, from now on the Organizers.
• Participants agree to use the Corpora and Data made available by CLEF 2025 lab organizers only for the purpose of their participation in the CLEF 2025 activities. Participants agree not to reproduce these Corpora and Data for distribution in any forms or by any means, whether it be for commercial or free distribution.
• Organisers reserve the right at their sole discretion to revoke any Participant’s access to shared Corpora and Data at any time. Upon request, Participants must immediately (i) cease all use of released Corpora and Data, and (ii) delete and/or return (at Organisers' sole discretion) all or part of the Corpora and Data.
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• Participants agree with the Organisers' data protection policy, available at https://clef2025-labs-registration.dei.unipd.it/privacy/.