Model overview
The AIFS is ECMWF's **Artificial Intelligence Forecasting System**. It consists of two data-driven medium-range forecast models: - AIFS Single v2 (described on the following page) - AIFS ENS v2 (described here) **AIFS ENS v2** was implemented on **12 May 2026** and supersedes version 1. It is run operationally by ECMWF, generating a 51-member 15-day (6-hourly) global forecast four times per day. The release of AIFS v2 introduces: - A new wave component, including 11 wave variables, marking **ECMWF's first operational data-driven wave forecasts**. - The addition of a new snow variable to the existing land component. - The addition of tropical cyclone track forecasts. - The addition of two variables already present in AIFS Single (vsw and cp), to harmonise the two models. - Improved vertical velocities, by changing parameter W from a prognostic to a diagnostic field. - An improved representation of the stratosphere, with the addition of pressure level fields at 10hPa.
Key features
特点摘要待依据来源补齐，不凭模型名称推断能力。
Limitations & considerations
Sources are insufficient to establish specific limitations. Verify task performance, latency, data policies, licensing and version lifecycle.
Source prices & cost analysis
Prices vary by channel, region and configuration. Channel quotes are listed independently and are not treated as a single official provider price.
| Source / channel | Input | Output | Billing unit | Collected at |
|---|---|---|---|---|
| No verified prices yet. Check the source channel. | ||||
Estimate monthly base token costs
Estimates exclude cache discounts, tiered pricing, multimodal surcharges, web search, taxes and additional reasoning output.
Public benchmarks & run configuration
暂无已采集的可核验公开评分。模型未上榜不代表能力较低。
View full indexed rankings →Frequently asked questions
Do open weights permit free commercial use?
Not necessarily. Check the version license, commercial conditions and usage policies. Self-hosting incurs compute and maintenance costs.
Are these real-time billing prices?
These are timestamped source snapshots, not live billing prices. Check the channel for current versions, regions, discounts and billing methods.
Sources & traceability
许可证：cc-by-4.0。模型介绍与第三方评测均以原来源的具体版本和方法为准。