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PURPOSE To report the repeatability, level of agreement and correlation of 2 swept-source optical coherence tomography (SS-OCT) biometers, the IOLMaster 700® (biometer A, Carl Zeiss, Germany) and the Anterion® (biometer B, Heidelberg Engineering GmbH, Heidelberg, Germany). SETTING Rothschild Foundation Hospital, Paris, France. DESIGN Prospective comparative case series. METHODS Consecutive patients who attended for cataract assessment had SS-OCT biometry performed with the reference and the biometer B. Axial length (AL), mean keratometry (mean K), central corneal thickness (CCT), anterior chamber depth (ACD), lens thickness (LT), and corneal diameter measurements (WTW) were measured. The intraoperator repeatability was calculated using ANOVA and repeatability limits. . Correlations were assessed and the level of agreement between the biometers was represented with the Bland-Altman method. RESULTS The study comprised 63 patients (125 eyes). There was a statistically significant difference between the 2 biometers in all measurements (P < .05). All repeatability measurements were very high as were the level of correlation and level of agreement between the biometer A and the biometer B for all parameters. CONCLUSION The biometer B provided good agreement and repeatability compared with the biometer A, however all parameters are not interchangeable in particular the WTW measurement and high keratometric values.