diff --git a/src-tauri/src/codex_config.rs b/src-tauri/src/codex_config.rs
index a9b75a237..3b79035cd 100644
--- a/src-tauri/src/codex_config.rs
+++ b/src-tauri/src/codex_config.rs
@@ -2655,7 +2655,7 @@ web_search = "disabled"
             ("gpt-5.5", "https://www.packyapi.com/v1"),
             ("gpt-5-codex", "https://aihubmix.com/v1"),
             (
-                "doubao-seed-2-1-pro",
+                "doubao-seed-2-1-pro-260628",
                 "https://ark.cn-beijing.volces.com/api/v3",
             ),
             ("Pro/moonshotai/Kimi-K2.6", "https://api.siliconflow.cn/v1"),
diff --git a/src-tauri/src/services/usage_stats.rs b/src-tauri/src/services/usage_stats.rs
index e336735d8..a1d75bd21 100644
--- a/src-tauri/src/services/usage_stats.rs
+++ b/src-tauri/src/services/usage_stats.rs
@@ -2197,8 +2197,24 @@ fn strip_model_date_suffix(model_id: &str) -> Option<String> {
     }
 
     let (base, suffix) = model_id.rsplit_once('-')?;
-    (!base.is_empty() && suffix.len() == 8 && suffix.chars().all(|c| c.is_ascii_digit()))
-        .then(|| base.to_string())
+    if base.is_empty() || !suffix.chars().all(|c| c.is_ascii_digit()) {
+        return None;
+    }
+    // 8 位 YYYYMMDD（如 -20250615；OpenAI / Claude / 通义千问等）。
+    if suffix.len() == 8 {
+        return Some(base.to_string());
+    }
+    // 6 位 YYMMDD（如 -260628；火山方舟 doubao-seed-*、部分国产厂商）。
+    // 6 位比 8 位更易误伤非日期尾巴（如 -123456 的版本号），故额外校验
+    // 月 01-12、日 01-31 才剥离；剥不动时退回 None 由上层精确匹配兜底。
+    if suffix.len() == 6 {
+        let month: u32 = suffix[2..4].parse().unwrap_or(0);
+        let day: u32 = suffix[4..6].parse().unwrap_or(0);
+        if (1..=12).contains(&month) && (1..=31).contains(&day) {
+            return Some(base.to_string());
+        }
+    }
+    None
 }
 
 fn strip_reasoning_effort_suffix(model_id: &str) -> Option<String> {
@@ -3859,6 +3875,55 @@ mod tests {
         assert_eq!(strip_model_date_suffix("abc🚀12345678"), None);
     }
 
+    #[test]
+    fn test_strip_model_date_suffix_handles_six_digit_yymmdd() {
+        // 火山方舟 6 位 YYMMDD 后缀应被剥离（doubao 全系都用这种格式）。
+        assert_eq!(
+            strip_model_date_suffix("doubao-seed-2-1-pro-260628").as_deref(),
+            Some("doubao-seed-2-1-pro")
+        );
+        assert_eq!(
+            strip_model_date_suffix("doubao-seed-1-6-250615").as_deref(),
+            Some("doubao-seed-1-6")
+        );
+        // 8 位 YYYYMMDD 仍照旧剥离。
+        assert_eq!(
+            strip_model_date_suffix("claude-3-5-sonnet-20241022").as_deref(),
+            Some("claude-3-5-sonnet")
+        );
+        // 月/日非法的 6 位尾巴（版本号等）不剥离，避免误伤。
+        assert_eq!(strip_model_date_suffix("foo-bar-123456"), None); // 月=34
+        assert_eq!(strip_model_date_suffix("widget-209900"), None); // 月=99
+        assert_eq!(strip_model_date_suffix("gizmo-251200"), None); // 日=00
+    }
+
+    #[test]
+    fn test_pricing_resolves_volcengine_dated_model_to_bare_seed_row() -> Result<(), AppError> {
+        // 回归：火山真实用量带 6 位日期后缀（doubao-seed-2-1-pro-260628），
+        // 必须能归一化命中定价表里的裸名 seed 行（doubao-seed-2-1-pro），否则成本显示 $0。
+        let db = Database::memory()?;
+        let conn = lock_conn!(db.conn);
+
+        conn.execute(
+            "INSERT OR REPLACE INTO model_pricing (
+                model_id, display_name, input_cost_per_million, output_cost_per_million,
+                cache_read_cost_per_million, cache_creation_cost_per_million
+            ) VALUES ('doubao-seed-2-1-pro', 'Doubao Seed 2.1 Pro', '0.84', '4.2', '0.17', '0')",
+            [],
+        )?;
+
+        let row = find_model_pricing_row(&conn, "doubao-seed-2-1-pro-260628")?;
+        assert!(
+            row.is_some(),
+            "带日期的火山模型应通过 6 位日期剥离命中裸名定价行"
+        );
+        let (input, output, ..) = row.unwrap();
+        assert_eq!(input, "0.84");
+        assert_eq!(output, "4.2");
+
+        Ok(())
+    }
+
     #[test]
     fn test_prefix_pricing_does_not_match_short_base_model_to_variant() -> Result<(), AppError> {
         let db = Database::memory()?;
diff --git a/src/config/claudeDesktopProviderPresets.ts b/src/config/claudeDesktopProviderPresets.ts
index efb803c4d..fbea0f41b 100644
--- a/src/config/claudeDesktopProviderPresets.ts
+++ b/src/config/claudeDesktopProviderPresets.ts
@@ -232,9 +232,9 @@ export const claudeDesktopProviderPresets: ClaudeDesktopProviderPreset[] = [
     mode: "proxy",
     apiFormat: "anthropic",
     modelRoutes: brandedRoutes(
-      "doubao-seed-2-1-pro",
-      "doubao-seed-2-1-pro",
-      "doubao-seed-2-1-pro",
+      "doubao-seed-2-1-pro-260628",
+      "doubao-seed-2-1-pro-260628",
+      "doubao-seed-2-1-pro-260628",
     ),
     isPartner: true,
     partnerPromotionKey: "doubaoseed",
diff --git a/src/config/claudeProviderPresets.ts b/src/config/claudeProviderPresets.ts
index 54250c834..d39759e65 100644
--- a/src/config/claudeProviderPresets.ts
+++ b/src/config/claudeProviderPresets.ts
@@ -179,10 +179,10 @@ export const providerPresets: ProviderPreset[] = [
         ANTHROPIC_BASE_URL: "https://ark.cn-beijing.volces.com/api/compatible",
         ANTHROPIC_AUTH_TOKEN: "",
         API_TIMEOUT_MS: "3000000",
-        ANTHROPIC_MODEL: "doubao-seed-2-1-pro",
-        ANTHROPIC_DEFAULT_SONNET_MODEL: "doubao-seed-2-1-pro",
-        ANTHROPIC_DEFAULT_OPUS_MODEL: "doubao-seed-2-1-pro",
-        ANTHROPIC_DEFAULT_HAIKU_MODEL: "doubao-seed-2-1-pro",
+        ANTHROPIC_MODEL: "doubao-seed-2-1-pro-260628",
+        ANTHROPIC_DEFAULT_SONNET_MODEL: "doubao-seed-2-1-pro-260628",
+        ANTHROPIC_DEFAULT_OPUS_MODEL: "doubao-seed-2-1-pro-260628",
+        ANTHROPIC_DEFAULT_HAIKU_MODEL: "doubao-seed-2-1-pro-260628",
       },
     },
     category: "cn_official",
diff --git a/src/config/codexProviderPresets.ts b/src/config/codexProviderPresets.ts
index 4c691a93d..1cc2861eb 100644
--- a/src/config/codexProviderPresets.ts
+++ b/src/config/codexProviderPresets.ts
@@ -212,7 +212,7 @@ export const codexProviderPresets: CodexProviderPreset[] = [
     config: generateThirdPartyConfig(
       "doubaoseed",
       "https://ark.cn-beijing.volces.com/api/v3",
-      "doubao-seed-2-1-pro",
+      "doubao-seed-2-1-pro-260628",
     ),
     endpointCandidates: ["https://ark.cn-beijing.volces.com/api/v3"],
     // 火山方舟主数据面 /api/v3 原生支持 Responses API（/api/v3/responses），无需路由接管转换
@@ -221,7 +221,7 @@ export const codexProviderPresets: CodexProviderPreset[] = [
     // 让 Codex 直连显示模型并避免 custom 工具被网关拒绝
     modelCatalog: modelCatalog([
       {
-        model: "doubao-seed-2-1-pro",
+        model: "doubao-seed-2-1-pro-260628",
         displayName: "Doubao Seed 2.1 Pro",
         contextWindow: 262144,
       },
diff --git a/src/config/hermesProviderPresets.ts b/src/config/hermesProviderPresets.ts
index 5df935a52..f222669b8 100644
--- a/src/config/hermesProviderPresets.ts
+++ b/src/config/hermesProviderPresets.ts
@@ -219,7 +219,7 @@ export const hermesProviderPresets: HermesProviderPreset[] = [
       api_mode: "anthropic_messages",
       models: [
         {
-          id: "doubao-seed-2-1-pro",
+          id: "doubao-seed-2-1-pro-260628",
           name: "Doubao Seed 2.1 Pro",
         },
       ],
@@ -231,7 +231,7 @@ export const hermesProviderPresets: HermesProviderPreset[] = [
     iconColor: "#3370FF",
     suggestedDefaults: {
       model: {
-        default: "doubao-seed-2-1-pro",
+        default: "doubao-seed-2-1-pro-260628",
         provider: "doubao_seed",
       },
     },
diff --git a/src/config/openclawProviderPresets.ts b/src/config/openclawProviderPresets.ts
index 3c9689124..0115678ca 100644
--- a/src/config/openclawProviderPresets.ts
+++ b/src/config/openclawProviderPresets.ts
@@ -228,7 +228,7 @@ export const openclawProviderPresets: OpenClawProviderPreset[] = [
       api: "openai-completions",
       models: [
         {
-          id: "doubao-seed-2-1-pro",
+          id: "doubao-seed-2-1-pro-260628",
           name: "DouBao Seed 2.1 Pro",
           contextWindow: 128000,
           cost: { input: 0.84, output: 4.2 },
@@ -248,9 +248,9 @@ export const openclawProviderPresets: OpenClawProviderPreset[] = [
       },
     },
     suggestedDefaults: {
-      model: { primary: "doubaoseed/doubao-seed-2-1-pro" },
+      model: { primary: "doubaoseed/doubao-seed-2-1-pro-260628" },
       modelCatalog: {
-        "doubaoseed/doubao-seed-2-1-pro": { alias: "DouBao" },
+        "doubaoseed/doubao-seed-2-1-pro-260628": { alias: "DouBao" },
       },
     },
   },
diff --git a/src/config/opencodeProviderPresets.ts b/src/config/opencodeProviderPresets.ts
index a8bdff6f4..bfc889e94 100644
--- a/src/config/opencodeProviderPresets.ts
+++ b/src/config/opencodeProviderPresets.ts
@@ -387,7 +387,7 @@ export const opencodeProviderPresets: OpenCodeProviderPreset[] = [
         setCacheKey: true,
       },
       models: {
-        "doubao-seed-2-1-pro": {
+        "doubao-seed-2-1-pro-260628": {
           name: "Doubao Seed 2.1 Pro",
         },
       },
diff --git a/tests/config/codexChatProviderPresets.test.ts b/tests/config/codexChatProviderPresets.test.ts
index 47cae427e..1dae7a2d1 100644
--- a/tests/config/codexChatProviderPresets.test.ts
+++ b/tests/config/codexChatProviderPresets.test.ts
@@ -158,7 +158,10 @@ describe("Codex Chat provider presets", () => {
       string,
       { contextWindows: Record<string, number> }
     >([
-      ["DouBaoSeed", { contextWindows: { "doubao-seed-2-1-pro": 262144 } }],
+      [
+        "DouBaoSeed",
+        { contextWindows: { "doubao-seed-2-1-pro-260628": 262144 } },
+      ],
       ["Bailian", { contextWindows: { "qwen3-coder-plus": 1048576 } }],
       ["Longcat", { contextWindows: { "LongCat-2.0-Preview": 1048576 } }],
       ["MiniMax", { contextWindows: { "MiniMax-M3": 1000000 } }],