Who claims it, in their own words, and what else was read.
“is the first experiment to demonstrate on-board feature detection using hyperspectral Earth observation Convolutional Neural Networks”
ESA Φ-lab: the operator. Published undated. Φ-sat-1, flown on FSSCat
“The performance of an on-board inference engine based on a machine learning (ML) algorithm for cloud detection was validated in flight. This is the first time such an experiment has been conducted in space.”
Giuffrida et al., the mission team: the mission team. Published 4 Nov 2021. Φ-sat-1, flown on FSSCat
“represents the first ever on-board AI deep CNN inference on a dedicated chip”
Giuffrida et al., the mission team: the mission team. Published 4 Nov 2021. Φ-sat-1, flown on FSSCat
“the first artificial intelligence (AI) technology carried onboard a European Earth observation mission”
ESA, relayed by eoPortal: a directory run by the operator's agency. Published 9 Aug 2026. Φ-sat-1, flown on FSSCat
Stands as worded. Nothing read contradicts the claim in the scope its maker gave it.
Each wording is scoped: to hyperspectral images and convolutional networks, to a dedicated chip, or to a European Earth observation mission. JPL describes onboard machine learning on EO-1 from 2003, which is earlier but is not a deep neural network on a dedicated chip, so the scoped wordings survive it.
“The ASE software uses onboard continuous planning, robust task and goal-based execution, and onboard machine learning and pattern recognition to radically increase science return by enabling intelligent downlink selection and autonomous retargeting.”
JPL Artificial Intelligence Group: the developer. Published undated. Autonomous Sciencecraft Experiment on Earth Observing-1
“The first satellite to run a deep neural network on board”
The Consciousness AI, a third-party tracker: another tracker. Published undated. Φ-sat-1, flown on FSSCat
Unchecked. Recorded as made. No earlier claim was found, and none was searched for.
A third party's wording, wider than any of ESA's. It is recorded to show how a scoped claim grows when repeated. Nothing read establishes it.