diff --git a/docs/MODEL_STACK_AND_DEB_ZH.md b/docs/MODEL_STACK_AND_DEB_ZH.md
index 8f3defc8..073d18f2 100644
--- a/docs/MODEL_STACK_AND_DEB_ZH.md
+++ b/docs/MODEL_STACK_AND_DEB_ZH.md
@@ -4,7 +4,7 @@
 
 ## 1. 接入方式
 
-当前多模型层通过 Open-Meteo model API 接入开放 NWP / AI 预报，不直接下载原始 GRIB。
+当前多模型层通过 Open-Meteo model API 接入开放 NWP / AIFS 等预报模型，不直接下载原始 GRIB。
 
 入口：
 
@@ -33,7 +33,7 @@ Web API 会把这部分元数据挂到：
 | 显示名 | Open-Meteo key | 来源 | 层级 | 说明 |
 | --- | --- | --- | --- | --- |
 | ECMWF | `ecmwf_ifs025` | ECMWF | global | IFS 全球传统数值模式 |
-| ECMWF AIFS | `ecmwf_aifs025_single` | ECMWF | global_ai | ECMWF AI forecast |
+| ECMWF AIFS | `ecmwf_aifs025_single` | ECMWF | aifs_global | ECMWF AIFS 模型 |
 | GFS | `gfs_seamless` | NOAA | global | NOAA 全球参考 |
 | ICON | `icon_seamless` | DWD | global | DWD ICON 全球基准 |
 | ICON-EU | `icon_eu` | DWD | regional_europe | 欧洲区域高分辨率 |
@@ -152,7 +152,7 @@ HRDPS > RDPS > GDPS > GEM
 - LGBM
 - Open-Meteo
 
-ECMWF IFS 与 ECMWF AIFS 分开保留，因为前者是传统 NWP，后者是 AI forecast。
+ECMWF IFS 与 ECMWF AIFS 分开保留，因为前者是传统 NWP，后者是 AIFS 模型。
 
 ## 5. DEB 权重流程
 
@@ -180,7 +180,7 @@ raw current_forecasts
 显示分组：
 
 - 全球基准
-- AI 预报
+- AIFS 模型
 - 欧洲高分辨率
 - 北美高分辨率
 
diff --git a/frontend/components/dashboard/PanelSections.tsx b/frontend/components/dashboard/PanelSections.tsx
index 85e1ecd5..44e3fce2 100644
--- a/frontend/components/dashboard/PanelSections.tsx
+++ b/frontend/components/dashboard/PanelSections.tsx
@@ -113,10 +113,10 @@ function getModelGroupMeta(
   const tier = String(meta.tier || "").toLowerCase();
   const upperName = String(name || "").toUpperCase();
 
-  if (tier.includes("ai") || upperName.includes("AIFS")) {
+  if (tier.includes("aifs") || upperName.includes("AIFS")) {
     return {
-      key: "ai",
-      label: locale === "en-US" ? "AI forecast" : "AI 预报",
+      key: "aifs",
+      label: locale === "en-US" ? "AIFS model" : "AIFS 模型",
       order: 1,
       tone: "blue",
     };
diff --git a/frontend/content/docs/docs.ts b/frontend/content/docs/docs.ts
index f486a1ad..987667d0 100644
--- a/frontend/content/docs/docs.ts
+++ b/frontend/content/docs/docs.ts
@@ -173,8 +173,8 @@ export const DOCS_PAGES: DocsPage[] = [
             id: "model-sources",
             title: "当前接入的开放模型",
             blocks: [
-              { type: "paragraph", text: "PolyWeather 的多模型层通过 Open-Meteo 模型接口接入开放 NWP / AI 预报。它不是直接下载原始 GRIB，而是把可用模型统一归一到最高温模型栈里，供模型分歧、概率层和 DEB 使用。" },
-              { type: "bullets", items: ["ECMWF IFS：全球传统数值模式。", "ECMWF AIFS：ECMWF AI forecast，作为独立 AI 路径保留。", "DWD ICON：全球 ICON 基准层。", "DWD ICON-EU：欧洲区域高分辨率层。", "DWD ICON-D2：欧洲短时高分辨率层。", "ECCC GEM / GDPS：加拿大系全球模式。", "ECCC RDPS / HRDPS：北美区域与短时高分辨率层。", "GFS / JMA：继续作为全球参考模型保留。"] },
+              { type: "paragraph", text: "PolyWeather 的多模型层通过 Open-Meteo 模型接口接入开放 NWP / AIFS 等预报模型。它不是直接下载原始 GRIB，而是把可用模型统一归一到最高温模型栈里，供模型分歧、概率层和 DEB 使用。" },
+              { type: "bullets", items: ["ECMWF IFS：全球传统数值模式。", "ECMWF AIFS：ECMWF AIFS 模型，作为独立 AIFS 路径保留。", "DWD ICON：全球 ICON 基准层。", "DWD ICON-EU：欧洲区域高分辨率层。", "DWD ICON-D2：欧洲短时高分辨率层。", "ECCC GEM / GDPS：加拿大系全球模式。", "ECCC RDPS / HRDPS：北美区域与短时高分辨率层。", "GFS / JMA：继续作为全球参考模型保留。"] },
             ],
           },
           {
@@ -190,7 +190,7 @@ export const DOCS_PAGES: DocsPage[] = [
             title: "DEB 如何处理新增模型",
             blocks: [
               { type: "paragraph", text: "DEB 不会把所有新模型按“每个模型一票”直接等权加入。否则 ICON / ICON-EU / ICON-D2 会让 DWD 模型家族被重复放大，GEM / GDPS / RDPS / HRDPS 也会让加拿大模型家族被重复放大。" },
-              { type: "bullets", items: ["ICON / ICON-EU / ICON-D2 归为 DWD ICON 家族，优先级为 ICON-D2 > ICON-EU > ICON。", "GEM / GDPS / RDPS / HRDPS 归为 ECCC GEM 家族，优先级为 HRDPS > RDPS > GDPS > GEM。", "ECMWF IFS 与 ECMWF AIFS 分开保留，因为一个是传统数值模式，一个是 AI forecast。", "GFS、JMA、MGM、NWS、LGBM、Open-Meteo 等保持独立路径。", "DEB 权重信息中出现“家族去重”时，表示系统已经先折叠同家族模型，再进行历史 MAE 倒数加权。"] },
+              { type: "bullets", items: ["ICON / ICON-EU / ICON-D2 归为 DWD ICON 家族，优先级为 ICON-D2 > ICON-EU > ICON。", "GEM / GDPS / RDPS / HRDPS 归为 ECCC GEM 家族，优先级为 HRDPS > RDPS > GDPS > GEM。", "ECMWF IFS 与 ECMWF AIFS 分开保留，因为一个是传统数值模式，一个是 AIFS 模型。", "GFS、JMA、MGM、NWS、LGBM、Open-Meteo 等保持独立路径。", "DEB 权重信息中出现“家族去重”时，表示系统已经先折叠同家族模型，再进行历史 MAE 倒数加权。"] },
               { type: "callout", tone: "info", title: "产品含义", text: "新增模型提升的是区域代表性和解释力，不是让某个地区因为模型数量更多就天然拥有更高权重。" },
             ],
           },
@@ -198,7 +198,7 @@ export const DOCS_PAGES: DocsPage[] = [
             id: "display",
             title: "网页上如何展示",
             blocks: [
-              { type: "paragraph", text: "网页的“模型区间与分歧”会按全球基准、AI 预报、欧洲高分辨率、北美高分辨率分组显示，并展示可用模型数量、模型分歧、来源、模型名称、分辨率和预报时效。没有覆盖的区域模型不会显示。" },
+              { type: "paragraph", text: "网页的“模型区间与分歧”会按全球基准、AIFS 模型、欧洲高分辨率、北美高分辨率分组显示，并展示可用模型数量、模型分歧、来源、模型名称、分辨率和预报时效。没有覆盖的区域模型不会显示。" },
             ],
           },
         ],
@@ -211,8 +211,8 @@ export const DOCS_PAGES: DocsPage[] = [
             id: "model-sources",
             title: "Open models currently integrated",
             blocks: [
-              { type: "paragraph", text: "PolyWeather's multi-model layer uses the Open-Meteo model API to integrate open NWP and AI forecasts. It does not download raw GRIB directly; instead, available models are normalized into the daily-high model stack used by spread, probabilities, and DEB." },
-              { type: "bullets", items: ["ECMWF IFS: global traditional NWP.", "ECMWF AIFS: ECMWF AI forecast, kept as a separate AI path.", "DWD ICON: global ICON baseline.", "DWD ICON-EU: European regional high-resolution layer.", "DWD ICON-D2: European short-range high-resolution layer.", "ECCC GEM / GDPS: Canadian global model family.", "ECCC RDPS / HRDPS: North American regional and short-range high-resolution layers.", "GFS / JMA: retained as global reference models."] },
+              { type: "paragraph", text: "PolyWeather's multi-model layer uses the Open-Meteo model API to integrate open NWP and AIFS model forecasts. It does not download raw GRIB directly; instead, available models are normalized into the daily-high model stack used by spread, probabilities, and DEB." },
+              { type: "bullets", items: ["ECMWF IFS: global traditional NWP.", "ECMWF AIFS: ECMWF AIFS model, kept as a separate AIFS path.", "DWD ICON: global ICON baseline.", "DWD ICON-EU: European regional high-resolution layer.", "DWD ICON-D2: European short-range high-resolution layer.", "ECCC GEM / GDPS: Canadian global model family.", "ECCC RDPS / HRDPS: North American regional and short-range high-resolution layers.", "GFS / JMA: retained as global reference models."] },
             ],
           },
           {
@@ -228,7 +228,7 @@ export const DOCS_PAGES: DocsPage[] = [
             title: "How DEB handles the new models",
             blocks: [
               { type: "paragraph", text: "DEB does not treat every new model as one independent vote. Otherwise ICON / ICON-EU / ICON-D2 would over-amplify the DWD family, and GEM / GDPS / RDPS / HRDPS would over-amplify the Canadian family." },
-              { type: "bullets", items: ["ICON / ICON-EU / ICON-D2 are collapsed into one DWD ICON family, with priority ICON-D2 > ICON-EU > ICON.", "GEM / GDPS / RDPS / HRDPS are collapsed into one ECCC GEM family, with priority HRDPS > RDPS > GDPS > GEM.", "ECMWF IFS and ECMWF AIFS are kept separate because one is traditional NWP and the other is an AI forecast.", "GFS, JMA, MGM, NWS, LGBM, and Open-Meteo remain independent paths.", "When the DEB weight string includes “family deduplication” or “家族去重”, the system has collapsed same-family models before applying historical inverse-MAE weighting."] },
+              { type: "bullets", items: ["ICON / ICON-EU / ICON-D2 are collapsed into one DWD ICON family, with priority ICON-D2 > ICON-EU > ICON.", "GEM / GDPS / RDPS / HRDPS are collapsed into one ECCC GEM family, with priority HRDPS > RDPS > GDPS > GEM.", "ECMWF IFS and ECMWF AIFS are kept separate because one is traditional NWP and the other is the AIFS model.", "GFS, JMA, MGM, NWS, LGBM, and Open-Meteo remain independent paths.", "When the DEB weight string includes “family deduplication” or “家族去重”, the system has collapsed same-family models before applying historical inverse-MAE weighting."] },
               { type: "callout", tone: "info", title: "Product meaning", text: "The new models improve regional representativeness and explanation quality. They do not let a region gain extra weight simply because more related model variants exist there." },
             ],
           },
@@ -236,7 +236,7 @@ export const DOCS_PAGES: DocsPage[] = [
             id: "display",
             title: "How the site displays this",
             blocks: [
-              { type: "paragraph", text: "The Model Range & Spread panel groups the model stack into Global Baseline, AI Forecast, Europe High-resolution, and North America High-resolution. It shows available model count, spread, source, model name, resolution, and forecast horizon. Regional models outside their domain are simply not shown." },
+              { type: "paragraph", text: "The Model Range & Spread panel groups the model stack into Global Baseline, AIFS Model, Europe High-resolution, and North America High-resolution. It shows available model count, spread, source, model name, resolution, and forecast horizon. Regional models outside their domain are simply not shown." },
             ],
           },
         ],
diff --git a/src/data_collection/nws_open_meteo_sources.py b/src/data_collection/nws_open_meteo_sources.py
index 56d3a149..570f2315 100644
--- a/src/data_collection/nws_open_meteo_sources.py
+++ b/src/data_collection/nws_open_meteo_sources.py
@@ -22,7 +22,7 @@ OPEN_METEO_MULTI_MODEL_SPECS: Dict[str, Dict[str, Any]] = {
         "label": "ECMWF AIFS",
         "provider": "ECMWF",
         "model": "AIFS single",
-        "tier": "global_ai",
+        "tier": "aifs_global",
         "resolution_km": 25,
         "horizon": "15d",
     },