Who claims it, in their own words, and what else was read.
“trains first AI model in space”
CNBC, in its headline: a news report. Published 10 Dec 2025. Starcloud-1
Contradicted. An earlier dated source, read here, reports the same thing.
A news headline. OPS-SAT's experimenters reported models trained in orbit in April 2021, and their 2022 paper gives the results. HPE dates federated training on the space station to February 2024.
“To our knowledge, this is the first time an artificial intelligence model is trained onboard a flying mission.”
Georges Labrèche, experimenter: the experimenter. Published 19 Apr 2021. OPS-SAT: models trained and run on board
“achieving balanced accuracies ranging from 85% to 99% from models trained with the Adagarad RDA, AROW, and NHERD online ML algorithms”
Labrèche et al., the flight control team: the mission team. Published 5 Mar 2022. OPS-SAT: models trained and run on board
“This experiment resulted in the first successful implementation of machine learning models trained in a federated manner using data held separately on both Earth and aboard the International Space Station.”
Hewlett Packard Enterprise: operator of the host computer. Published 29 Feb 2024. Project FLUID: federated learning on the International Space Station
“To our knowledge, this is the first time an artificial intelligence model is trained onboard a flying mission.”
Georges Labrèche, experimenter: the experimenter. Published 19 Apr 2021. OPS-SAT: models trained and run on board
“The ability to train models in-flight with data generated on-board without human involvement is an exciting first”
Labrèche et al., the flight control team: the mission team. Published 5 Mar 2022. OPS-SAT: models trained and run on board
Unchecked. Recorded as made. No earlier claim was found, and none was searched for.
Hedged by its makers ("to our knowledge"). JPL's page on EO-1 speaks of onboard machine learning from 2003 without saying whether anything was trained on board.