diff --git a/app/Models/System/AiConfig.php b/app/Models/System/AiConfig.php
index d771379d..6b9c94ce 100644
--- a/app/Models/System/AiConfig.php
+++ b/app/Models/System/AiConfig.php
@@ -59,7 +59,7 @@ class AiConfig extends Model
      * Provider별 기본 모델
      */
     public const DEFAULT_MODELS = [
-        'gemini' => 'gemini-2.0-flash',
+        'gemini' => 'gemini-2.5-flash',
         'claude' => 'claude-sonnet-4-20250514',
         'openai' => 'gpt-4o',
         'gcs' => '-',
@@ -94,7 +94,7 @@ public static function getActiveGemini(): ?self
         $instance = new self;
         $instance->provider = 'gemini';
         $instance->api_key = $apiKey;
-        $instance->model = config('services.gemini.model', 'gemini-2.0-flash');
+        $instance->model = config('services.gemini.model', 'gemini-2.5-flash');
         $instance->base_url = config('services.gemini.base_url', 'https://generativelanguage.googleapis.com/v1beta');
         $instance->is_active = true;
         $instance->options = [
diff --git a/app/Services/NotionService.php b/app/Services/NotionService.php
index 1ce0f9c4..2f65da6d 100644
--- a/app/Services/NotionService.php
+++ b/app/Services/NotionService.php
@@ -109,7 +109,7 @@ public function searchWithAi(string $userMessage, array $history = []): array
         }
 
         $geminiApiKey = $gemini->api_key;
-        $geminiModel = $gemini->model ?: 'gemini-2.0-flash';
+        $geminiModel = $gemini->model ?: 'gemini-2.5-flash';
         $geminiBaseUrl = $gemini->base_url ?: 'https://generativelanguage.googleapis.com/v1beta';
 
         // 대화 이력 텍스트 변환
diff --git a/config/services.php b/config/services.php
index d012d82e..271e2014 100644
--- a/config/services.php
+++ b/config/services.php
@@ -37,7 +37,7 @@
 
     'gemini' => [
         'api_key' => env('GEMINI_API_KEY'),
-        'model' => env('GEMINI_MODEL', 'gemini-2.0-flash'),
+        'model' => env('GEMINI_MODEL', 'gemini-2.5-flash'),
         'base_url' => env('GEMINI_BASE_URL', 'https://generativelanguage.googleapis.com/v1beta'),
         'project_id' => env('GEMINI_PROJECT_ID', 'codebridge-chatbot'),
     ],
diff --git a/resources/views/academy/env-management.blade.php b/resources/views/academy/env-management.blade.php
index 889af3d8..8ad5aec7 100644
--- a/resources/views/academy/env-management.blade.php
+++ b/resources/views/academy/env-management.blade.php
@@ -522,7 +522,7 @@ class="w-full rounded-xl cursor-pointer academy-img-hover"
                                         <td class="p-2 border-b font-mono">GEMINI_MODEL</td>
                                         <td class="p-2 border-b text-center text-emerald-600">&#10003;</td>
                                         <td class="p-2 border-b text-center text-emerald-600">&#10003;</td>
-                                        <td class="p-2 border-b text-gray-600">gemini-2.0-flash</td>
+                                        <td class="p-2 border-b text-gray-600">gemini-2.5-flash</td>
                                     </tr>
                                     <tr>
                                         <td class="p-2 border-b font-mono">VERTEX_AI_PROJECT_ID</td>
diff --git a/resources/views/google-cloud/ai-guide/index.blade.php b/resources/views/google-cloud/ai-guide/index.blade.php
index 0ddf4bf4..7aff1a9f 100644
--- a/resources/views/google-cloud/ai-guide/index.blade.php
+++ b/resources/views/google-cloud/ai-guide/index.blade.php
@@ -142,8 +142,8 @@ class="inline-flex items-center gap-1.5 px-3 py-1.5 text-sm font-medium text-whi
                             ['sam' => '회의록 자동 생성', 'api' => 'Speech-to-Text', 'model' => 'Chirp 2 / latest_long', 'status' => '운영중', 'file' => 'MeetingMinuteService'],
                             ['sam' => '음성 녹음 분석', 'api' => 'Speech-to-Text', 'model' => 'Chirp 2 + Gemini', 'status' => '운영중', 'file' => 'AiVoiceRecordingService'],
                             ['sam' => '상담 메모 음성 입력', 'api' => 'Speech-to-Text', 'model' => 'V1 latest_long', 'status' => '운영중', 'file' => 'GoogleCloudService'],
-                            ['sam' => '재무 AI 리포트', 'api' => 'Vertex AI (Gemini)', 'model' => 'gemini-2.0-flash', 'status' => '운영중', 'file' => 'AiReportService (API)'],
-                            ['sam' => '명함 OCR', 'api' => 'Gemini API', 'model' => 'gemini-2.0-flash', 'status' => '운영중', 'file' => 'GeminiService'],
+                            ['sam' => '재무 AI 리포트', 'api' => 'Vertex AI (Gemini)', 'model' => 'gemini-2.5-flash', 'status' => '운영중', 'file' => 'AiReportService (API)'],
+                            ['sam' => '명함 OCR', 'api' => 'Gemini API', 'model' => 'gemini-2.5-flash', 'status' => '운영중', 'file' => 'GeminiService'],
                             ['sam' => '오디오 백업/저장', 'api' => 'Cloud Storage', 'model' => 'Standard Class', 'status' => '운영중', 'file' => 'GoogleCloudStorageService'],
                             ['sam' => 'AI 설정 관리', 'api' => '—', 'model' => '다중 Provider', 'status' => '운영중', 'file' => 'AiConfig (Model)'],
                             ['sam' => '토큰/비용 추적', 'api' => '—', 'model' => 'USD/KRW 환산', 'status' => '운영중', 'file' => 'AiTokenHelper'],
@@ -407,7 +407,7 @@ class="inline-flex items-center gap-1.5 px-3 py-1.5 text-sm font-medium text-whi
                     <p class="text-xs text-gray-600 mb-3">테넌트의 비즈니스 데이터(지출, 매출, 매입, 입출금, 카드/계좌, 미수금)를 자동 수집하여 일간/주간/월간 분석 리포트를 생성합니다.</p>
                     <div class="space-y-1 text-xs text-gray-500">
                         <div><strong>서비스:</strong> AiReportService (API 프로젝트)</div>
-                        <div><strong>모델:</strong> gemini-2.0-flash (Vertex AI)</div>
+                        <div><strong>모델:</strong> gemini-2.5-flash (Vertex AI)</div>
                         <div><strong>분석 영역:</strong> 지출, 매출, 매입, 입출금, 카드/계좌, 미수금</div>
                         <div><strong>API:</strong> <code class="px-1 bg-emerald-100 rounded">POST /v1/reports/ai/generate</code></div>
                     </div>
@@ -422,7 +422,7 @@ class="inline-flex items-center gap-1.5 px-3 py-1.5 text-sm font-medium text-whi
                     <p class="text-xs text-gray-600 mb-3">STT로 변환된 회의 전문을 Gemini에 전달하여 핵심 내용, 결정 사항, 후속 조치 항목을 자동으로 요약합니다.</p>
                     <div class="space-y-1 text-xs text-gray-500">
                         <div><strong>서비스:</strong> MeetingMinuteService (MNG)</div>
-                        <div><strong>모델:</strong> gemini-2.0-flash</div>
+                        <div><strong>모델:</strong> gemini-2.5-flash</div>
                         <div><strong>입력:</strong> 화자별 세그먼트 전체 텍스트</div>
                         <div><strong>출력:</strong> ai_summary 필드에 저장</div>
                     </div>
@@ -463,7 +463,7 @@ class="inline-flex items-center gap-1.5 px-3 py-1.5 text-sm font-medium text-whi
                         <div class="font-medium text-gray-700 mb-1">비용 계산 흐름</div>
                         <div class="gai-code" style="font-size: 11px;">AiTokenHelper::record(
   provider: 'gemini',
-  model: 'gemini-2.0-flash',
+  model: 'gemini-2.5-flash',
   menu: 'meeting-minutes',
   inputTokens: 1520,
   outputTokens: 350,
@@ -578,7 +578,7 @@ class="inline-flex items-center gap-1.5 px-3 py-1.5 text-sm font-medium text-whi
             <div class="flex gap-4 mb-5" style="flex-wrap: wrap;">
                 @php
                     $providers = [
-                        ['name' => 'Gemini', 'provider' => 'gemini', 'model' => 'gemini-2.0-flash', 'use' => '명함 OCR, 회의 요약, 음성 분석', 'color' => 'blue', 'auth' => 'Vertex AI / API Key'],
+                        ['name' => 'Gemini', 'provider' => 'gemini', 'model' => 'gemini-2.5-flash', 'use' => '명함 OCR, 회의 요약, 음성 분석', 'color' => 'blue', 'auth' => 'Vertex AI / API Key'],
                         ['name' => 'Claude', 'provider' => 'claude', 'model' => 'claude-sonnet-4-20250514', 'use' => 'AI 재무 분석 (예비)', 'color' => 'purple', 'auth' => 'API Key'],
                         ['name' => 'OpenAI', 'provider' => 'openai', 'model' => 'gpt-4o', 'use' => '범용 AI (예비)', 'color' => 'green', 'auth' => 'API Key'],
                         ['name' => 'GCS', 'provider' => 'gcs', 'model' => '—', 'use' => '음성 녹음 백업, 파일 저장', 'color' => 'cyan', 'auth' => 'Service Account'],
diff --git a/resources/views/system/ai-config/index.blade.php b/resources/views/system/ai-config/index.blade.php
index fcc17313..ee174d19 100644
--- a/resources/views/system/ai-config/index.blade.php
+++ b/resources/views/system/ai-config/index.blade.php
@@ -509,8 +509,8 @@
 
             <div>
                 <label class="block text-sm font-medium text-gray-700 mb-1">모델 <span class="text-red-500">*</span></label>
-                <input type="text" id="config-model" required placeholder="예: gemini-2.0-flash" class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
-                <p class="mt-1 text-xs text-gray-500">기본값: <span id="default-model">gemini-2.0-flash</span></p>
+                <input type="text" id="config-model" required placeholder="예: gemini-2.5-flash" class="w-full px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500">
+                <p class="mt-1 text-xs text-gray-500">기본값: <span id="default-model">gemini-2.5-flash</span></p>
             </div>
 
             <div id="base-url-section">
@@ -578,7 +578,7 @@ function showToast(message, type = 'info') {
     }
 
     const defaultModels = {
-        gemini: 'gemini-2.0-flash',
+        gemini: 'gemini-2.5-flash',
         claude: 'claude-sonnet-4-20250514',
         openai: 'gpt-4o'
     };