ECMWF runs several third-party data-driven weather forecasting models alongside the AIFS for comparison purposes. These state-of-the-art models are developed externally and are not maintained by ECMWF. The models are run daily and graphical output is publicly available on the OpenCharts platform. 

Plots measuring the performance of the AIFS and these third-party models are available here.

The available parameters are:

• 2m temperature
• 10m wind speed
• Temperature at 850 hPa
• Geopotential at 500hPa

The available metrics are:

• Root mean square error
• Anomaly correlation score
• Forecast activity

A guide to interpreting these metrics is provided in our Forecast User Guide: Section 6.2 Relative Skill of IFS Models