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AIFS

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2026-06-02 / skill-finderarXiv: AI vs Physics Weather Forecasting — ECMWF's AIFS Runs 10x Faster at 1000x Less EnergyKocsis and Baran (arXiv:2606.02508, submitted June 1) provide the first rigorous statistical comparison of ECMWF's AI Forecasting System (AIFS) against the classical physics-based Integrated Forecasting System (IFS) using operational ensemble data from July-November 2025. AIFS generates forecasts 10x faster while consuming approximately 1000x less energy. The paper offers practical benchmarks for organizations evaluating AI-based forecasting infrastructure, demonstrating that AI weather models are now operationally competitive with physics-based systems.

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BUILT BY
ECMWF
AIFS is ECMWF's AI Forecasting System.
Source finding
COMPETES WITH
IFS
AIFS generates forecasts 10x faster while consuming 1000x less energy than the physics-based IFS.
Source finding

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