Envision Tianji Tops ECMWF AI Weather Quest

Oct 30, 2026
Envision says its Tianji weather foundation model ranked first across all assessed metrics in the latest ECMWF AI Weather Quest.

Envision Energy says its Tianji weather foundation model ranked first overall in the latest AI Weather Quest, according to a company press release. The competition is organized by the European Centre for Medium Range Weather Forecasts.

Tianji placed first across all assessed metrics for the 19 to 25 day forecast window, including averaged variables, near surface temperature, mean sea level pressure and precipitation. Nearly 20 teams participated in the competition.

The contest evaluates weekly probabilistic forecasts against subsequent weather observations and updates its leaderboard continuously. Temperature and precipitation are assessed mainly over land grid cells, while mean sea level pressure is evaluated globally. Envision says Tianji also placed on par with Google's WeatherNext2 in the WeatherBench 2 evaluation and won load-forecasting competitions run by China's State Grid and China Southern Power Grid.

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