diff --git a/.github/workflows/run_evals.yml b/.github/workflows/run_evals.yml
index 9d63d74a..6ee7b5ab 100644
--- a/.github/workflows/run_evals.yml
+++ b/.github/workflows/run_evals.yml
@@ -43,7 +43,7 @@ on:
       chat_model:
         description: 'Chat model to use'
         required: false
-        default: 'gemini-2.0-flash'
+        default: 'gemini-2.5-flash'
         type: string
       max_research_iterations:
         description: 'Maximum number of iterations in research mode'
@@ -151,7 +151,7 @@ jobs:
           RANDOMIZE: ${{ github.event_name == 'workflow_dispatch' && inputs.randomize || 'true' }}
           KHOJ_URL: "http://localhost:42110"
           KHOJ_LLM_SEED: "42"
-          KHOJ_DEFAULT_CHAT_MODEL: ${{ github.event_name == 'workflow_dispatch' && inputs.chat_model || 'gemini-2.0-flash' }}
+          KHOJ_DEFAULT_CHAT_MODEL: ${{ github.event_name == 'workflow_dispatch' && inputs.chat_model || 'gemini-2.5-flash' }}
           KHOJ_RESEARCH_ITERATIONS: ${{ github.event_name == 'workflow_dispatch' && inputs.max_research_iterations || 10 }}
           KHOJ_AUTO_READ_WEBPAGE: ${{ github.event_name == 'workflow_dispatch' && inputs.auto_read_webpage || 'false' }}
           GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }}
@@ -224,7 +224,7 @@ jobs:
           echo "## Evaluation Summary of Khoj on ${{ matrix.dataset }} in ${{ matrix.khoj_mode }} mode" >> $GITHUB_STEP_SUMMARY
           echo "**$(head -n 1 *_evaluation_summary_*.txt)**" >> $GITHUB_STEP_SUMMARY
           echo "- Khoj Version: ${{ steps.hatch.outputs.version }}" >> $GITHUB_STEP_SUMMARY
-          echo "- Chat Model: ${{ inputs.chat_model || 'gemini-2.0-flash' }}" >> $GITHUB_STEP_SUMMARY
+          echo "- Chat Model: ${{ inputs.chat_model || 'gemini-2.5-flash' }}" >> $GITHUB_STEP_SUMMARY
           echo "- Code Sandbox: ${{ inputs.sandbox || 'terrarium' }}" >> $GITHUB_STEP_SUMMARY
           echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
           tail -n +2 *_evaluation_summary_*.txt >> $GITHUB_STEP_SUMMARY
diff --git a/documentation/docs/get-started/setup.mdx b/documentation/docs/get-started/setup.mdx
index 01d60496..02f0eada 100644
--- a/documentation/docs/get-started/setup.mdx
+++ b/documentation/docs/get-started/setup.mdx
@@ -279,7 +279,7 @@ Using Ollama? See the [Ollama Integration](/advanced/ollama) section for more cu
    - Add your [Gemini API key](https://aistudio.google.com/app/apikey)
    - Give the configuration a friendly name like `Gemini`. Do not configure the API base url.
 2. Create a new [chat model](http://localhost:42110/server/admin/database/chatmodel/add)
-    - Set the `chat-model` field to a [Google Gemini chat model](https://cloud.google.com/vertex-ai/generative-ai/docs/learn/models#gemini-models). Example: `gemini-2.0-flash`.
+    - Set the `chat-model` field to a [Google Gemini chat model](https://cloud.google.com/vertex-ai/generative-ai/docs/learn/models#gemini-models). Example: `gemini-2.5-flash`.
     - Set the `model-type` field to `Google`.
     - Set the `ai model api` field to the Gemini AI Model API you created in step 1.
 
diff --git a/src/khoj/processor/conversation/google/gemini_chat.py b/src/khoj/processor/conversation/google/gemini_chat.py
index e6923fad..e9e7736c 100644
--- a/src/khoj/processor/conversation/google/gemini_chat.py
+++ b/src/khoj/processor/conversation/google/gemini_chat.py
@@ -76,7 +76,7 @@ async def converse_gemini(
     user_name: str = None,
     chat_history: List[ChatMessageModel] = [],
     # Model
-    model: Optional[str] = "gemini-2.0-flash",
+    model: Optional[str] = "gemini-2.5-flash",
     api_key: Optional[str] = None,
     api_base_url: Optional[str] = None,
     temperature: float = 1.0,
diff --git a/src/khoj/processor/conversation/utils.py b/src/khoj/processor/conversation/utils.py
index 82a0baab..270ca23b 100644
--- a/src/khoj/processor/conversation/utils.py
+++ b/src/khoj/processor/conversation/utils.py
@@ -73,6 +73,7 @@ model_to_prompt_size = {
     "gpt-5-nano-2025-08-07": 120000,
     # Google Models
     "gemini-2.5-flash": 120000,
+    "gemini-2.5-flash-lite": 120000,
     "gemini-2.5-pro": 60000,
     "gemini-2.0-flash": 120000,
     "gemini-2.0-flash-lite": 120000,
diff --git a/src/khoj/utils/constants.py b/src/khoj/utils/constants.py
index c04b7c5b..0a55b165 100644
--- a/src/khoj/utils/constants.py
+++ b/src/khoj/utils/constants.py
@@ -11,7 +11,7 @@ app_env_filepath = "~/.khoj/env"
 telemetry_server = "https://khoj.beta.haletic.com/v1/telemetry"
 content_directory = "~/.khoj/content/"
 default_openai_chat_models = ["gpt-4o-mini", "gpt-4.1", "o3", "o4-mini"]
-default_gemini_chat_models = ["gemini-2.0-flash", "gemini-2.5-flash-preview-05-20", "gemini-2.5-pro-preview-06-05"]
+default_gemini_chat_models = ["gemini-2.0-flash", "gemini-2.5-flash", "gemini-2.5-pro", "gemini-2.5-flash-lite"]
 default_anthropic_chat_models = ["claude-sonnet-4-0", "claude-3-5-haiku-latest"]
 
 empty_config = {
@@ -50,6 +50,7 @@ model_to_cost: Dict[str, Dict[str, float]] = {
     "gemini-1.5-pro-002": {"input": 1.25, "output": 5.00},
     "gemini-2.0-flash": {"input": 0.10, "output": 0.40},
     "gemini-2.0-flash-lite": {"input": 0.0075, "output": 0.30},
+    "gemini-2.5-flash-lite": {"input": 0.10, "output": 0.40},
     "gemini-2.5-flash": {"input": 0.30, "output": 2.50},
     "gemini-2.5-pro": {"input": 1.25, "output": 10.0},
     # Anthropic Pricing: https://www.anthropic.com/pricing#anthropic-api
diff --git a/tests/conftest.py b/tests/conftest.py
index 1b33e94d..c8af0c93 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -246,7 +246,7 @@ def chat_client_builder(search_config, user, index_content=True, require_auth=Fa
     if chat_provider == ChatModel.ModelType.OPENAI:
         online_chat_model = ChatModelFactory(name="gpt-4o-mini", model_type="openai")
     elif chat_provider == ChatModel.ModelType.GOOGLE:
-        online_chat_model = ChatModelFactory(name="gemini-2.0-flash", model_type="google")
+        online_chat_model = ChatModelFactory(name="gemini-2.5-flash", model_type="google")
     elif chat_provider == ChatModel.ModelType.ANTHROPIC:
         online_chat_model = ChatModelFactory(name="claude-3-5-haiku-20241022", model_type="anthropic")
     if online_chat_model:
@@ -355,7 +355,7 @@ End of file {i}.
     if chat_provider == ChatModel.ModelType.OPENAI:
         online_chat_model = ChatModelFactory(name="gpt-4o-mini", model_type="openai")
     elif chat_provider == ChatModel.ModelType.GOOGLE:
-        online_chat_model = ChatModelFactory(name="gemini-2.0-flash", model_type="google")
+        online_chat_model = ChatModelFactory(name="gemini-2.5-flash", model_type="google")
     elif chat_provider == ChatModel.ModelType.ANTHROPIC:
         online_chat_model = ChatModelFactory(name="claude-3-5-haiku-20241022", model_type="anthropic")
 
diff --git a/tests/evals/eval.py b/tests/evals/eval.py
index 85188d2e..8121ddfc 100644
--- a/tests/evals/eval.py
+++ b/tests/evals/eval.py
@@ -34,10 +34,10 @@ logger = logging.getLogger(__name__)
 KHOJ_URL = os.getenv("KHOJ_URL", "http://localhost:42110")
 KHOJ_CHAT_API_URL = f"{KHOJ_URL}/api/chat"
 KHOJ_API_KEY = os.getenv("KHOJ_API_KEY")
-KHOJ_MODE = os.getenv("KHOJ_MODE", "default").lower()  # E.g research, general, notes etc.
+KHOJ_MODE = os.getenv("KHOJ_MODE", "default").lower()  # E.g research, general, default etc.
 
 GEMINI_API_KEY = os.getenv("GEMINI_API_KEY")
-GEMINI_EVAL_MODEL = os.getenv("GEMINI_EVAL_MODEL", "gemini-2.0-flash-001")
+GEMINI_EVAL_MODEL = os.getenv("GEMINI_EVAL_MODEL", "gemini-2.5-flash")
 
 LLM_SEED = int(os.getenv("KHOJ_LLM_SEED")) if os.getenv("KHOJ_LLM_SEED") else None
 SAMPLE_SIZE = os.getenv("SAMPLE_SIZE")  # Number of examples to evaluate
@@ -636,7 +636,7 @@ def main():
         response_evaluator = evaluate_response_with_mcq_match
     elif args.dataset == "math500":
         response_evaluator = partial(
-            evaluate_response_with_gemini, eval_model=os.getenv("GEMINI_EVAL_MODEL", "gemini-2.0-flash-001")
+            evaluate_response_with_gemini, eval_model=os.getenv("GEMINI_EVAL_MODEL", "gemini-2.5-flash-lite")
         )
     elif args.dataset == "frames_ir":
         response_evaluator = evaluate_response_for_ir
@@ -696,7 +696,7 @@ def main():
 if __name__ == "__main__":
     """
     Evaluate Khoj on supported benchmarks.
-    Response are evaluated by GEMINI_EVAL_MODEL (default: gemini-pro-1.5-002).
+    Response are evaluated by GEMINI_EVAL_MODEL (default: gemini-2.5-flash).
 
     Khoj should be running at KHOJ_URL (default: http://localhost:42110).
     The Gemini judge model is accessed via the Gemini API with your GEMINI_API_KEY.
diff --git a/tests/helpers.py b/tests/helpers.py
index 6edb0946..985ba00a 100644
--- a/tests/helpers.py
+++ b/tests/helpers.py
@@ -232,7 +232,7 @@ class ChatModelFactory(factory.django.DjangoModelFactory):
 
     max_prompt_size = 20000
     tokenizer = None
-    name = "gemini-2.0-flash"
+    name = "gemini-2.5-flash"
     model_type = get_chat_provider()
     ai_model_api = factory.LazyAttribute(lambda obj: AiModelApiFactory() if get_chat_api_key() else None)
 
diff --git a/tests/test_api_automation.py b/tests/test_api_automation.py
index c993cb23..b05d0e63 100644
--- a/tests/test_api_automation.py
+++ b/tests/test_api_automation.py
@@ -20,7 +20,7 @@ def create_test_automation(client: TestClient) -> str:
     """Helper function to create a test automation and return its ID."""
     state.anonymous_mode = True
     ChatModelFactory(
-        name="gemini-2.0-flash", model_type="google", ai_model_api=AiModelApiFactory(api_key=get_chat_api_key("google"))
+        name="gemini-2.5-flash", model_type="google", ai_model_api=AiModelApiFactory(api_key=get_chat_api_key("google"))
     )
     params = {
         "q": "test automation",
@@ -37,7 +37,7 @@ def test_create_automation(client: TestClient):
     # Arrange
     state.anonymous_mode = True
     ChatModelFactory(
-        name="gemini-2.0-flash", model_type="google", ai_model_api=AiModelApiFactory(api_key=get_chat_api_key("google"))
+        name="gemini-2.5-flash", model_type="google", ai_model_api=AiModelApiFactory(api_key=get_chat_api_key("google"))
     )
     params = {
         "q": "test automation",