diff --git a/server-rs/crates/api-server/src/app.rs b/server-rs/crates/api-server/src/app.rs
index f4adedc22..135e54a6b 100644
--- a/server-rs/crates/api-server/src/app.rs
+++ b/server-rs/crates/api-server/src/app.rs
@@ -5930,6 +5930,20 @@ mod tests {
             payload["models"]["seedance2.0"]["prices"]["720p"],
             Value::Number(24.into())
         );
+        // 公开读模型的 3D 段保持迁移前的旧形状：前端画布按端点读底价、按单表读加价项。
+        assert_eq!(
+            payload["model3d"]["basePrices"]["text-to-model"]["v3.1-20260211"]["noTexture"],
+            Value::Number(8.into())
+        );
+        assert_eq!(
+            payload["model3d"]["basePrices"]["image-to-model"]["v3.1-20260211"]["texture"],
+            Value::Number(24.into())
+        );
+        assert_eq!(
+            payload["model3d"]["addOnPrices"]["quadMesh"],
+            Value::Number(4.into())
+        );
+        assert!(payload["model3d"]["textToModelPricing"].is_null());
     }
 
     #[tokio::test]
diff --git a/server-rs/crates/api-server/src/editor_generation_config.rs b/server-rs/crates/api-server/src/editor_generation_config.rs
index d3ff52837..67a07fe4a 100644
--- a/server-rs/crates/api-server/src/editor_generation_config.rs
+++ b/server-rs/crates/api-server/src/editor_generation_config.rs
@@ -8,7 +8,9 @@ use std::{
 use serde::{Deserialize, Serialize};
 
 use crate::asset_billing::current_external_generation_billing_price_mud_points;
-use crate::tripo3d::pricing::{Model3dPricingConfig, Model3dPricingError, Model3dPricingQuery};
+use crate::tripo3d::pricing::{
+    Model3dPricingConfig, Model3dPricingError, Model3dPricingPublicView, Model3dPricingQuery,
+};
 
 /// 图片画布编辑器生成类能力的泥点配置。
 ///
@@ -83,6 +85,16 @@ pub(crate) struct EditorGenerationPricingConfig {
     pub model3d: Option<Model3dPricingConfig>,
 }
 
+/// 主站公开读模型的响应体：`models` 原样透出，3D 段投影回迁移前的旧形状
+/// （[`Model3dPricingPublicView`]），让画布 3D 入口不需要随本次迁移改动。
+#[derive(Clone, Debug, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct EditorGenerationPricingPublicResponse {
+    pub models: BTreeMap<String, EditorGenerationModelPricing>,
+    #[serde(default, skip_serializing_if = "Option::is_none")]
+    pub model3d: Option<Model3dPricingPublicView>,
+}
+
 #[derive(Clone, Debug)]
 pub(crate) struct EditorGenerationPricingStore {
     current: Arc<RwLock<EditorGenerationPricingConfig>>,
@@ -107,6 +119,15 @@ impl From<Model3dPricingError> for EditorGenerationPricingError {
 }
 
 impl EditorGenerationPricingConfig {
+    /// 公开读模型视图：字段名与嵌套形状保持迁移前一致，见
+    /// [`EditorGenerationPricingPublicResponse`]。
+    pub(crate) fn into_public_response(self) -> EditorGenerationPricingPublicResponse {
+        EditorGenerationPricingPublicResponse {
+            models: self.models,
+            model3d: self.model3d.map(Model3dPricingConfig::into_public_view),
+        }
+    }
+
     /// Tripo 3D 提交查价：缺段或缺键都直接报错，不回退默认值。
     ///
     /// 错误与同文件其它查询统一成 [`EditorGenerationPricingError`]，3D 结构化原因收在
diff --git a/server-rs/crates/api-server/src/editor_project.rs b/server-rs/crates/api-server/src/editor_project.rs
index 8029cf054..ef0723f7f 100644
--- a/server-rs/crates/api-server/src/editor_project.rs
+++ b/server-rs/crates/api-server/src/editor_project.rs
@@ -2025,7 +2025,11 @@ pub async fn get_editor_generation_pricing(
             "message": error.to_string(),
         }))
     })?;
-    Ok(json_success_body(Some(&request_context), pricing))
+    // 公开读模型不改形状：内部两段结构在这里投影回旧的 `basePrices` / `addOnPrices`。
+    Ok(json_success_body(
+        Some(&request_context),
+        pricing.into_public_response(),
+    ))
 }
 
 pub async fn list_editor_projects(
diff --git a/server-rs/crates/api-server/src/tripo3d/pricing.rs b/server-rs/crates/api-server/src/tripo3d/pricing.rs
index 8fb422d07..54a674b66 100644
--- a/server-rs/crates/api-server/src/tripo3d/pricing.rs
+++ b/server-rs/crates/api-server/src/tripo3d/pricing.rs
@@ -11,6 +11,7 @@ use shared_contracts::model3d::common::{
     Model3dGeometryQuality, Model3dModelVersion, Model3dTextureQuality,
 };
 use shared_contracts::model3d::wire_str_lossy;
+use tracing::warn;
 
 /// 生成端点。批量价键与请求入口一一对应，不做 provider 侧的变形。
 #[derive(Clone, Copy, Debug, Deserialize, Eq, Ord, PartialEq, PartialOrd, Serialize)]
@@ -90,6 +91,19 @@ pub(crate) struct Model3dPricingConfig {
     pub image_to_model_pricing: Model3dEndpointPricing,
 }
 
+/// 主站公开读模型里的 3D 段。
+///
+/// 形状保持迁移前的 `basePrices`（端点判别）× `addOnPrices` 单表：画布 3D 入口直接读它、
+/// 没有内置兜底，形状一变入口就会判定「定价缺失」。两段内部结构到这份视图的投影是有损的
+/// ——加价项只有一张表，取文生 3D 段，两段不一致时打告警。前端升级到按端点读取加价项之前，
+/// 不要在两段之间差异化加价项。
+#[derive(Clone, Debug, PartialEq, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub(crate) struct Model3dPricingPublicView {
+    pub base_prices: BTreeMap<Model3dEndpoint, BTreeMap<Model3dModelVersion, Model3dBasePrice>>,
+    pub add_on_prices: BTreeMap<Model3dAddOn, u32>,
+}
+
 impl Model3dPricingConfig {
     pub(crate) fn endpoint_pricing(&self, endpoint: Model3dEndpoint) -> &Model3dEndpointPricing {
         match endpoint {
@@ -97,6 +111,32 @@ impl Model3dPricingConfig {
             Model3dEndpoint::ImageToModel => &self.image_to_model_pricing,
         }
     }
+
+    /// 投影成公开读模型的旧形状。
+    pub(crate) fn into_public_view(self) -> Model3dPricingPublicView {
+        let Model3dPricingConfig {
+            text_to_model_pricing,
+            image_to_model_pricing,
+        } = self;
+        if text_to_model_pricing.add_on_prices != image_to_model_pricing.add_on_prices {
+            warn!(
+                "文生 3D 与图生 3D 的加价项不一致，公开读模型只能给出文生 3D 的加价项：前端按端点读取前不要差异化加价项"
+            );
+        }
+        let mut base_prices = BTreeMap::new();
+        base_prices.insert(
+            Model3dEndpoint::TextToModel,
+            text_to_model_pricing.version_prices,
+        );
+        base_prices.insert(
+            Model3dEndpoint::ImageToModel,
+            image_to_model_pricing.version_prices,
+        );
+        Model3dPricingPublicView {
+            base_prices,
+            add_on_prices: text_to_model_pricing.add_on_prices,
+        }
+    }
 }
 
 /// 一次提交的定价输入：只携带判定价格需要的字段，全部来自已校验的请求。