diff --git a/samples/rest/cache.sh b/samples/rest/cache.sh
index 218b5e4b1..8df687886 100644
--- a/samples/rest/cache.sh
+++ b/samples/rest/cache.sh
@@ -34,7 +34,7 @@ echo '{
   "ttl": "300s"
 }' > request.json
 
-curl -X POST "https://generativelanguage.googleapis.com/v1beta/cachedContents?key=$GOOGLE_API_KEY" \
+curl -X POST "https://generativelanguage.googleapis.com/v1beta/cachedContents?key=$GEMINI_API_KEY" \
  -H 'Content-Type: application/json' \
  -d @request.json \
  > cache.json
@@ -43,7 +43,7 @@ CACHE_NAME=$(cat cache.json | grep '"name":' | cut -d '"' -f 4 | head -n 1)
 
 echo "[START cache_generate_content]"
 # [START cache_generate_content]
-curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash-001:generateContent?key=$GOOGLE_API_KEY" \
+curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash-001:generateContent?key=$GEMINI_API_KEY" \
 -H 'Content-Type: application/json' \
 -d '{
       "contents": [
@@ -62,22 +62,22 @@ rm a11.txt request.json
 
 echo "[START cache_list]"
 # [START cache_list]
-curl "https://generativelanguage.googleapis.com/v1beta/cachedContents?key=$GOOGLE_API_KEY"
+curl "https://generativelanguage.googleapis.com/v1beta/cachedContents?key=$GEMINI_API_KEY"
 # [END cache_list]
 
 echo "[START cache_get]"
 # [START cache_get]
-curl "https://generativelanguage.googleapis.com/v1beta/$CACHE_NAME?key=$GOOGLE_API_KEY"
+curl "https://generativelanguage.googleapis.com/v1beta/$CACHE_NAME?key=$GEMINI_API_KEY"
 # [END cache_get]
 
 echo "[START cache_update]"
 # [START cache_update]
-curl -X PATCH "https://generativelanguage.googleapis.com/v1beta/$CACHE_NAME?key=$GOOGLE_API_KEY" \
+curl -X PATCH "https://generativelanguage.googleapis.com/v1beta/$CACHE_NAME?key=$GEMINI_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{"ttl": "600s"}'
 # [END cache_update]
 
 echo "[START cache_delete]"
 # [START cache_delete]
-curl -X DELETE "https://generativelanguage.googleapis.com/v1beta/$CACHE_NAME?key=$GOOGLE_API_KEY"
-# [END cache_delete]
\ No newline at end of file
+curl -X DELETE "https://generativelanguage.googleapis.com/v1beta/$CACHE_NAME?key=$GEMINI_API_KEY"
+# [END cache_delete]
diff --git a/samples/rest/chat.sh b/samples/rest/chat.sh
index 78e6f9917..0243e4152 100644
--- a/samples/rest/chat.sh
+++ b/samples/rest/chat.sh
@@ -5,7 +5,7 @@ MEDIA_DIR=$(realpath ${SCRIPT_DIR}/../../third_party)
 
 echo "[START chat]"
 # [START chat]
-curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY \
+curl https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -25,7 +25,7 @@ curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:ge
 
 echo "[START chat_streaming]"
 # [START chat_streaming]
-curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:streamGenerateContent?alt=sse&key=$GOOGLE_API_KEY \
+curl https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:streamGenerateContent?alt=sse&key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -53,7 +53,7 @@ else
   B64FLAGS="-w0"
 fi
 
-curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:streamGenerateContent?alt=sse&key=$GOOGLE_API_KEY \
+curl https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:streamGenerateContent?alt=sse&key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -90,4 +90,4 @@ curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:st
             }
         ]
     }' 2> /dev/null | grep "text"
-# [END chat_streaming_with_images]
\ No newline at end of file
+# [END chat_streaming_with_images]
diff --git a/samples/rest/code_execution.sh b/samples/rest/code_execution.sh
index 44fbf679c..f134e728f 100644
--- a/samples/rest/code_execution.sh
+++ b/samples/rest/code_execution.sh
@@ -2,7 +2,7 @@ set -eu
 
 echo "[START code_execution_basic]"
 # [START code_execution_basic]
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
 -H 'Content-Type: application/json' \
 -d ' {"tools": [{"code_execution": {}}],
     "contents": {
@@ -16,7 +16,7 @@ curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:g
 
 echo "[START code_execution_chat]"
 # [START code_execution_chat]
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
 -H 'Content-Type: application/json' \
 -d '{"tools": [{"code_execution": {}}],
     "contents": [
diff --git a/samples/rest/configure_model_parameters.sh b/samples/rest/configure_model_parameters.sh
index bd8d9d4c6..2e6e31b35 100644
--- a/samples/rest/configure_model_parameters.sh
+++ b/samples/rest/configure_model_parameters.sh
@@ -2,21 +2,15 @@ set -eu
 
 echo "[START configure_model_parameters]"
 # [START configure_model_parameters]
-curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY \
+curl https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
         "contents": [{
             "parts":[
-                {"text": "Write a story about a magic backpack."}
+                {"text": "Explain how AI works"}
             ]
         }],
-        "safetySettings": [
-            {
-                "category": "HARM_CATEGORY_DANGEROUS_CONTENT",
-                "threshold": "BLOCK_ONLY_HIGH"
-            }
-        ],
         "generationConfig": {
             "stopSequences": [
                 "Title"
diff --git a/samples/rest/controlled_generation.sh b/samples/rest/controlled_generation.sh
index 533870649..352b435de 100644
--- a/samples/rest/controlled_generation.sh
+++ b/samples/rest/controlled_generation.sh
@@ -2,7 +2,7 @@ set -eu
 
 echo "json_controlled_generation"
 # [START json_controlled_generation]
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
 -H 'Content-Type: application/json' \
 -d '{
     "contents": [{
@@ -27,7 +27,7 @@ curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:g
 
 echo "json_no_schema"
 # [START json_no_schema]
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
 -H 'Content-Type: application/json' \
 -d '{
     "contents": [{
diff --git a/samples/rest/count_tokens.sh b/samples/rest/count_tokens.sh
index e69fd6d1c..3c6be6719 100644
--- a/samples/rest/count_tokens.sh
+++ b/samples/rest/count_tokens.sh
@@ -19,14 +19,14 @@ fi
 
 echo "[START tokens_context_window]"
 # [START tokens_context_window]
-curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-pro?key=$GOOGLE_API_KEY > model.json
+curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-pro?key=$GEMINI_API_KEY > model.json
 jq .inputTokenLimit model.json
 jq .outputTokenLimit model.json
 # [END tokens_context_window]
 
 echo "[START tokens_text_only]"
 # [START tokens_text_only]
-curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:countTokens?key=$GOOGLE_API_KEY \
+curl https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:countTokens?key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -40,7 +40,7 @@ curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:co
 
 echo "[START tokens_chat]"
 # [START tokens_chat]
-curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:countTokens?key=$GOOGLE_API_KEY \
+curl https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:countTokens?key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -57,7 +57,7 @@ curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:co
 
 echo "[START tokens_multimodal_image_inline]"
 # [START tokens_multimodal_image_inline]
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:countTokens?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:countTokens?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -285,4 +285,4 @@ curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-pro-lat
 ' > tools_output.json
 
 jq .usageMetadata.totalTokenCount tools_output.json
-# [END tokens_tools]
\ No newline at end of file
+# [END tokens_tools]
diff --git a/samples/rest/embed.sh b/samples/rest/embed.sh
index 26fa11d44..49f6ddfcb 100644
--- a/samples/rest/embed.sh
+++ b/samples/rest/embed.sh
@@ -2,7 +2,7 @@ set -eu
 
 echo "[START embed_content]"
 # [START embed_content]
-curl "https://generativelanguage.googleapis.com/v1beta/models/text-embedding-004:embedContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/text-embedding-004:embedContent?key=$GEMINI_API_KEY" \
 -H 'Content-Type: application/json' \
 -d '{"model": "models/text-embedding-004",
     "content": {
@@ -12,7 +12,7 @@ curl "https://generativelanguage.googleapis.com/v1beta/models/text-embedding-004
 
 echo "[START batch_embed_contents]"
 # [START batch_embed_contents]
-curl "https://generativelanguage.googleapis.com/v1beta/models/text-embedding-004:batchEmbedContents?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/text-embedding-004:batchEmbedContents?key=$GEMINI_API_KEY" \
 -H 'Content-Type: application/json' \
 -d '{"requests": [{
       "model": "models/text-embedding-004",
@@ -29,4 +29,4 @@ curl "https://generativelanguage.googleapis.com/v1beta/models/text-embedding-004
       "content": {
       "parts":[{
         "text": "How does the brain work?"}]}, }, ]}' 2> /dev/null | grep -C 5 values
-# [END batch_embed_contents]
\ No newline at end of file
+# [END batch_embed_contents]
diff --git a/samples/rest/files.sh b/samples/rest/files.sh
index 8f292c4f6..dd72db3b1 100644
--- a/samples/rest/files.sh
+++ b/samples/rest/files.sh
@@ -22,7 +22,7 @@ tmp_header_file=upload-header.tmp
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -45,7 +45,7 @@ file_uri=$(jq ".file.uri" file_info.json)
 echo file_uri=$file_uri
 
 # Now generate content using that file
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -75,7 +75,7 @@ echo file_uri=$file_uri
 
 echo "[START files_delete]"
 # [START files_delete]
-curl --request "DELETE" https://generativelanguage.googleapis.com/v1beta/files/$name?key=$GOOGLE_API_KEY
+curl --request "DELETE" https://generativelanguage.googleapis.com/v1beta/files/$name?key=$GEMINI_API_KEY
 # [END files_delete]
 
 # [END files_create_text]
@@ -90,7 +90,7 @@ tmp_header_file=upload-header.tmp
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -113,7 +113,7 @@ file_uri=$(jq ".file.uri" file_info.json)
 echo file_uri=$file_uri
 
 # Now generate content using that file
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -143,7 +143,7 @@ tmp_header_file=upload-header.tmp
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -166,7 +166,7 @@ file_uri=$(jq ".file.uri" file_info.json)
 echo file_uri=$file_uri
 
 # Now generate content using that file
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -191,7 +191,7 @@ DISPLAY_NAME=VIDEO_PATH
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -227,7 +227,7 @@ do
 done
 
 # Now generate content using that file
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -252,7 +252,7 @@ tmp_header_file=upload-header.tmp
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -296,5 +296,5 @@ echo "[START files_list]"
 # [START files_list]
 echo "My files: "
 
-curl "https://generativelanguage.googleapis.com/v1beta/files?key=$GOOGLE_API_KEY"
-# [END files_list]
\ No newline at end of file
+curl "https://generativelanguage.googleapis.com/v1beta/files?key=$GEMINI_API_KEY"
+# [END files_list]
diff --git a/samples/rest/function_calling.sh b/samples/rest/function_calling.sh
index c6479811a..a0e0fa28d 100644
--- a/samples/rest/function_calling.sh
+++ b/samples/rest/function_calling.sh
@@ -34,7 +34,7 @@ cat > tools.json << EOF
 } 
 EOF
 
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-pro-latest:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
   -H 'Content-Type: application/json' \
   -d @<(echo '
   {
diff --git a/samples/rest/models.sh b/samples/rest/models.sh
index a03d5585b..465d627d8 100644
--- a/samples/rest/models.sh
+++ b/samples/rest/models.sh
@@ -2,10 +2,10 @@ set -eu
 
 echo "[START models_list]"
 # [START models_list]
-curl https://generativelanguage.googleapis.com/v1beta/models?key=$GOOGLE_API_KEY
+curl https://generativelanguage.googleapis.com/v1beta/models?key=$GEMINI_API_KEY
 # [END models_list]
 
 echo "[START models_get]"
 # [START models_get]
-curl https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash?key=$GOOGLE_API_KEY
+curl https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash?key=$GEMINI_API_KEY
 # [END models_get]
diff --git a/samples/rest/safety_settings.sh b/samples/rest/safety_settings.sh
index 713d25c06..a087307db 100644
--- a/samples/rest/safety_settings.sh
+++ b/samples/rest/safety_settings.sh
@@ -10,7 +10,7 @@ echo "[START safety_settings]"
         "parts":[{
             "text": "'I support Martians Soccer Club and I think Jupiterians Football Club sucks! Write a ironic phrase about them.'"}]}]}' > request.json
     
-    curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+    curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
         -H 'Content-Type: application/json' \
         -X POST \
         -d @request.json 2> /dev/null
@@ -27,7 +27,7 @@ echo "[START safety_settings_multi]"
             "parts":[{
                 "text": "'I support Martians Soccer Club and I think Jupiterians Football Club sucks! Write a ironic phrase about them.'"}]}]}' > request.json
 
-    curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+    curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
         -H 'Content-Type: application/json' \
         -X POST \
         -d @request.json 2> /dev/null
diff --git a/samples/rest/system_instruction.sh b/samples/rest/system_instruction.sh
index 1e4c36d6c..44f77ea04 100644
--- a/samples/rest/system_instruction.sh
+++ b/samples/rest/system_instruction.sh
@@ -2,7 +2,7 @@ set -eu
 
 echo "[START system_instruction]"
 # [START system_instruction]
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
 -H 'Content-Type: application/json' \
 -d '{ "system_instruction": {
     "parts":
@@ -10,4 +10,4 @@ curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:g
     "contents": {
       "parts": {
         "text": "Hello there"}}}'
-# [END system_instruction]
\ No newline at end of file
+# [END system_instruction]
diff --git a/samples/rest/text_generation.sh b/samples/rest/text_generation.sh
index 8cfadd688..fc21e7d00 100755
--- a/samples/rest/text_generation.sh
+++ b/samples/rest/text_generation.sh
@@ -19,7 +19,7 @@ BASE_URL="https://generativelanguage.googleapis.com"
 
 echo "[START text_gen_text_only_prompt]"
 # [START text_gen_text_only_prompt]
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -31,7 +31,7 @@ curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:g
 
 echo "[START text_gen_text_only_prompt_streaming]"
 # [START text_gen_text_only_prompt_streaming]
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:streamGenerateContent?alt=sse&key=${GOOGLE_API_KEY}" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:streamGenerateContent?alt=sse&key=${GEMINI_API_KEY}" \
         -H 'Content-Type: application/json' \
         --no-buffer \
         -d '{ "contents":[{"parts":[{"text": "Write a story about a magic backpack."}]}]}'
@@ -64,7 +64,7 @@ cat > "$TEMP_JSON" << EOF
 }
 EOF
 
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d "@$TEMP_JSON" 2> /dev/null
@@ -88,7 +88,7 @@ cat > "$TEMP_JSON" << EOF
 }
 EOF
 
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:streamGenerateContent?alt=sse&key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:streamGenerateContent?alt=sse&key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d "@$TEMP_JSON" 2> /dev/null
@@ -129,7 +129,7 @@ cat > "$TEMP_JSON" << EOF
 EOF
 
 # Make the API request using the JSON file
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d "@$TEMP_JSON" 2> /dev/null > response.json
@@ -162,7 +162,7 @@ cat > "$TEMP_JSON" << EOF
 EOF
 
 # Make the API request using the JSON file
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-pro:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d "@$TEMP_JSON" 2> /dev/null > response.json
@@ -181,7 +181,7 @@ tmp_header_file=upload-header.tmp
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -203,7 +203,7 @@ curl "${upload_url}" \
 file_uri=$(jq ".file.uri" file_info.json)
 echo file_uri=$file_uri
 
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -231,7 +231,7 @@ tmp_header_file=upload-header.tmp
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -253,7 +253,7 @@ curl "${upload_url}" \
 file_uri=$(jq ".file.uri" file_info.json)
 echo file_uri=$file_uri
 
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:streamGenerateContent?alt=sse&key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:streamGenerateContent?alt=sse&key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -277,7 +277,7 @@ DISPLAY_NAME=VIDEO
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D "${tmp_header_file}" \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -314,7 +314,7 @@ do
   state=$(jq ".file.state" file_info.json)
 done
 
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -340,7 +340,7 @@ DISPLAY_NAME=VIDEO_PATH
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -374,7 +374,7 @@ do
   state=$(jq ".file.state" file_info.json)
 done
 
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:streamGenerateContent?alt=sse&key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:streamGenerateContent?alt=sse&key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -401,7 +401,7 @@ tmp_header_file=upload-header.tmp
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -424,7 +424,7 @@ file_uri=$(jq ".file.uri" file_info.json)
 echo file_uri=$file_uri
 
 # Now generate content using that file
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:generateContent?key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:generateContent?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -453,7 +453,7 @@ tmp_header_file=upload-header.tmp
 
 # Initial resumable request defining metadata.
 # The upload url is in the response headers dump them to a file.
-curl "${BASE_URL}/upload/v1beta/files?key=${GOOGLE_API_KEY}" \
+curl "${BASE_URL}/upload/v1beta/files?key=${GEMINI_API_KEY}" \
   -D upload-header.tmp \
   -H "X-Goog-Upload-Protocol: resumable" \
   -H "X-Goog-Upload-Command: start" \
@@ -476,7 +476,7 @@ file_uri=$(jq ".file.uri" file_info.json)
 echo file_uri=$file_uri
 
 # Now generate content using that file
-curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:streamGenerateContent?alt=sse&key=$GOOGLE_API_KEY" \
+curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.0-flash:streamGenerateContent?alt=sse&key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -X POST \
     -d '{
@@ -489,4 +489,4 @@ curl "https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-flash:s
 
 cat response.json
 echo
-# [END text_gen_multimodal_pdf_streaming]
\ No newline at end of file
+# [END text_gen_multimodal_pdf_streaming]
diff --git a/samples/rest/tuned_models.sh b/samples/rest/tuned_models.sh
index 5594734f6..0e32f97a0 100644
--- a/samples/rest/tuned_models.sh
+++ b/samples/rest/tuned_models.sh
@@ -2,7 +2,7 @@ set -eu
 
 echo "[START tuned_models_create]"
 # [START tuned_models_create]
-curl -X POST "https://generativelanguage.googleapis.com/v1beta/tunedModels?key=$GOOGLE_API_KEY" \
+curl -X POST "https://generativelanguage.googleapis.com/v1beta/tunedModels?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
     -d '
       {
@@ -77,7 +77,7 @@ tuning_done=false
 while [[ "$tuning_done" != "true" ]];
 do
   sleep 5
-  curl -X GET "https://generativelanguage.googleapis.com/v1/${operation}?key=$GOOGLE_API_KEY" \
+  curl -X GET "https://generativelanguage.googleapis.com/v1/${operation}?key=$GEMINI_API_KEY" \
     -H 'Content-Type: application/json' \
      2> /dev/null > tuning_operation.json
 
@@ -90,7 +90,7 @@ done
 
 # Or get the TunedModel and check it's state. The model is ready to use if the state is active.
 modelname=$(cat tunemodel.json | jq ".metadata.tunedModel" | tr -d '"')
-curl -X GET  https://generativelanguage.googleapis.com/v1beta/${modelname}?key=$GOOGLE_API_KEY \
+curl -X GET  https://generativelanguage.googleapis.com/v1beta/${modelname}?key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' > tuned_model.json
 
 cat tuned_model.json | jq ".state"
@@ -99,7 +99,7 @@ cat tuned_model.json | jq ".state"
 
 echo "[START tuned_models_generate_content]"
 # [START tuned_models_generate_content]
-curl -X POST https://generativelanguage.googleapis.com/v1beta/$modelname:generateContent?key=$GOOGLE_API_KEY \
+curl -X POST https://generativelanguage.googleapis.com/v1beta/$modelname:generateContent?key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' \
     -d '{
         "contents": [{
@@ -112,7 +112,7 @@ curl -X POST https://generativelanguage.googleapis.com/v1beta/$modelname:generat
 
 echo "[START tuned_models_get]"
 # [START tuned_models_get]
-curl -X GET https://generativelanguage.googleapis.com/v1beta/${modelname}?key=$GOOGLE_API_KEY \
+curl -X GET https://generativelanguage.googleapis.com/v1beta/${modelname}?key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' | grep state
 # [END tuned_models_get]
 
@@ -130,7 +130,7 @@ jq .tunedModels[].name < tuned_models.json
 page_token=$(jq .nextPageToken < tuned_models.json | tr -d '"')
 
 if [[ "$page_token" != "null"" ]]; then
-curl -X GET https://generativelanguage.googleapis.com/v1beta/tunedModels?page_size=5\&page_token=${page_token}?key=$GOOGLE_API_KEY \
+curl -X GET https://generativelanguage.googleapis.com/v1beta/tunedModels?page_size=5\&page_token=${page_token}?key=$GEMINI_API_KEY \
     -H "Content-Type: application/json"  > tuned_models2.json
 jq .tunedModels[].name < tuned_models.json
 fi
@@ -138,6 +138,6 @@ fi
 
 echo "[START tuned_models_delete]"
 # [START tuned_models_delete]
-curl -X DELETE https://generativelanguage.googleapis.com/v1beta/${modelname}?key=$GOOGLE_API_KEY \
+curl -X DELETE https://generativelanguage.googleapis.com/v1beta/${modelname}?key=$GEMINI_API_KEY \
     -H 'Content-Type: application/json' 
-# [END tuned_models_delete]
\ No newline at end of file
+# [END tuned_models_delete]