Li, TandaBi, ShaolanDavies, Guy R.Bedding, Timothy R.Li, YaguangStello, DennisReyes, Claudia2025-05-312025-05-310035-8711ORCID:/0000-0001-9632-2706/work/180548354http://www.scopus.com/inward/record.url?scp=85192478223&partnerID=8YFLogxKhttps://hdl.handle.net/1885/733756133Asteroseismology can precisely characterize stars, but the accuracy of seismic inference is still an open question. In this work, we use three evolved stars, including one late subgiant (EPIC 211411922) and two young red giants (EPIC 211409560 and EPIC 211416749) in the open cluster M67 to validate seismic inferences of stellar mass and age. We start by measuring oscillation mode frequencies and identifying acoustic and mixed modes in all three stars. We then fit the stars to determine their masses and ages with a detailed modelling approach. Our age estimates for all stars agree well with the literature consensus age range of M67 (3.0–5.0 Gyr). Mass estimates for EPIC 211411922 and EPIC 211409560 are sensible because they are slightly higher than the typical turn-off mass of the cluster. The inferred mass for EPIC 211416749 is underestimated by 5–10 per cent compared with the turn-off mass, but this could be caused by poor data quality. Our results indicate that the detailed modelling can determine sensible masses and ages for evolved stars near the base of the red giant branch.This work was supported by the National Natural Science Foundation of China (NSFC) grant 12373031, the Joint Research Fund in Astronomy (U2031203) under cooperative agreement between the National Natural Science Foundation of China (NSFC) and Chinese Academy of Sciences (CAS), and the NSFC grants 12090040 and 12090042. This work was also supported by the Fundamental Research Funds for the Central Universities. This paper has also received funding from the European Research Council (ERC) under the European Union\u2019s Horizon 2020 research and innovation programme (CartographY GA. 804752). TRB acknowledges support from the Australian Research Council through Laureate Fellowship FL220100117. We also thank the Kepler team for making this research possible.12enPublisher Copyright: © 2024 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.oscillationsstars202410.1093/mnras/stae102685192478223