diff --git a/genai/count-tokens/counttoken-compute-with-txt.js b/genai/count-tokens/counttoken-compute-with-txt.js
index fd68a462e8..241e2f6005 100644
--- a/genai/count-tokens/counttoken-compute-with-txt.js
+++ b/genai/count-tokens/counttoken-compute-with-txt.js
@@ -24,14 +24,14 @@ async function countTokens(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
     httpOptions: {apiVersion: 'v1'},
   });
 
-  const response = await ai.models.computeTokens({
+  const response = await client.models.computeTokens({
     model: 'gemini-2.5-flash',
     contents: "What's the longest word in the English language?",
   });
diff --git a/genai/count-tokens/counttoken-resp-with-txt.js b/genai/count-tokens/counttoken-resp-with-txt.js
index c8cf4fe6cc..399fa5a5e4 100644
--- a/genai/count-tokens/counttoken-resp-with-txt.js
+++ b/genai/count-tokens/counttoken-resp-with-txt.js
@@ -24,14 +24,14 @@ async function countTokens(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
     httpOptions: {apiVersion: 'v1'},
   });
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'gemini-2.5-flash',
     contents: 'Why is the sky blue?',
   });
diff --git a/genai/count-tokens/counttoken-with-txt-vid.js b/genai/count-tokens/counttoken-with-txt-vid.js
index 766de4b00b..02b8be38fe 100644
--- a/genai/count-tokens/counttoken-with-txt-vid.js
+++ b/genai/count-tokens/counttoken-with-txt-vid.js
@@ -24,7 +24,7 @@ async function countTokens(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
@@ -37,7 +37,7 @@ async function countTokens(
     },
   };
 
-  const response = await ai.models.countTokens({
+  const response = await client.models.countTokens({
     model: 'gemini-2.5-flash',
     contents: [video, 'Provide a description of the video.'],
   });
diff --git a/genai/count-tokens/counttoken-with-txt.js b/genai/count-tokens/counttoken-with-txt.js
index 111f7148cd..f68397aaa3 100644
--- a/genai/count-tokens/counttoken-with-txt.js
+++ b/genai/count-tokens/counttoken-with-txt.js
@@ -24,13 +24,13 @@ async function countTokens(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
   });
 
-  const response = await ai.models.countTokens({
+  const response = await client.models.countTokens({
     model: 'gemini-2.5-flash',
     contents: 'What is the highest mountain in Africa?',
   });
diff --git a/genai/image-generation/imggen-mmflash-with-txt.js b/genai/image-generation/imggen-mmflash-with-txt.js
index 054a7f72d5..44c2ef0397 100644
--- a/genai/image-generation/imggen-mmflash-with-txt.js
+++ b/genai/image-generation/imggen-mmflash-with-txt.js
@@ -26,14 +26,14 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
   });
 
-  const response = await ai.models.generateContentStream({
-    model: 'gemini-2.0-flash-exp',
+  const response = await client.models.generateContentStream({
+    model: 'gemini-2.5-flash-image',
     contents:
       'Generate an image of the Eiffel tower with fireworks in the background.',
     config: {
diff --git a/genai/package.json b/genai/package.json
index d04ae788d4..9d94f3811b 100644
--- a/genai/package.json
+++ b/genai/package.json
@@ -13,7 +13,7 @@
     "test": "c8 mocha -p -j 2 --timeout 2400000 test/*.test.js test/**/*.test.js"
   },
   "dependencies": {
-    "@google/genai": "1.12.0",
+    "@google/genai": "1.20.0",
     "axios": "^1.6.2",
     "luxon": "^3.7.1",
     "supertest": "^7.0.0"
diff --git a/genai/test/imggen-mmflash-with-txt.test.js b/genai/test/imggen-mmflash-with-txt.test.js
index 44f109b269..87cd1b8238 100644
--- a/genai/test/imggen-mmflash-with-txt.test.js
+++ b/genai/test/imggen-mmflash-with-txt.test.js
@@ -18,16 +18,20 @@ const {assert} = require('chai');
 const {describe, it} = require('mocha');
 
 const projectId = process.env.CAIP_PROJECT_ID;
+const location = 'global';
+
 const sample = require('../image-generation/imggen-mmflash-with-txt.js');
 const {delay} = require('./util');
 
 describe('imggen-mmflash-with-txt', async () => {
   it('should generate images from a text prompt', async function () {
     this.timeout(180000);
-    this.retries(10);
+    this.retries(5);
     await delay(this.test);
-    const generatedFileNames = await sample.generateContent(projectId);
-    assert(Array.isArray(generatedFileNames));
+    const generatedFileNames = await sample.generateContent(
+      projectId,
+      location
+    );
     assert(generatedFileNames.length > 0);
   });
 });
diff --git a/genai/text-generation/textgen-code-with-pdf.js b/genai/text-generation/textgen-code-with-pdf.js
index 22a29d0393..820227711d 100644
--- a/genai/text-generation/textgen-code-with-pdf.js
+++ b/genai/text-generation/textgen-code-with-pdf.js
@@ -24,7 +24,7 @@ async function generateText(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
@@ -46,7 +46,7 @@ async function generateText(
     },
   ];
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'gemini-2.5-flash',
     contents: contents,
   });
diff --git a/genai/text-generation/textgen-sys-instr-with-txt.js b/genai/text-generation/textgen-sys-instr-with-txt.js
index 309a5f630b..f61e9f0d02 100644
--- a/genai/text-generation/textgen-sys-instr-with-txt.js
+++ b/genai/text-generation/textgen-sys-instr-with-txt.js
@@ -24,7 +24,7 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
@@ -35,7 +35,7 @@ async function generateContent(
   Answer:
   `;
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'gemini-2.5-flash',
     contents: prompt,
     config: {
diff --git a/genai/text-generation/textgen-with-multi-img.js b/genai/text-generation/textgen-with-multi-img.js
index 8bd750f99a..1aeda15c52 100644
--- a/genai/text-generation/textgen-with-multi-img.js
+++ b/genai/text-generation/textgen-with-multi-img.js
@@ -24,7 +24,7 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
@@ -44,7 +44,7 @@ async function generateContent(
     },
   };
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'gemini-2.5-flash',
     contents: [
       image1,
diff --git a/genai/text-generation/textgen-with-multi-local-img.js b/genai/text-generation/textgen-with-multi-local-img.js
index 855c875222..6a2092623a 100644
--- a/genai/text-generation/textgen-with-multi-local-img.js
+++ b/genai/text-generation/textgen-with-multi-local-img.js
@@ -32,7 +32,7 @@ async function generateContent(
   imagePath1,
   imagePath2
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
@@ -42,7 +42,7 @@ async function generateContent(
   const image1 = loadImageAsBase64(imagePath1);
   const image2 = loadImageAsBase64(imagePath2);
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'gemini-2.5-flash',
     contents: [
       {
diff --git a/genai/text-generation/textgen-with-txt-img.js b/genai/text-generation/textgen-with-txt-img.js
index 3799118e60..29f86f4b6e 100644
--- a/genai/text-generation/textgen-with-txt-img.js
+++ b/genai/text-generation/textgen-with-txt-img.js
@@ -24,7 +24,7 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
@@ -37,7 +37,7 @@ async function generateContent(
     },
   };
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'gemini-2.5-flash',
     contents: [image, 'What is shown in this image?'],
   });
diff --git a/genai/text-generation/textgen-with-txt-routing.js b/genai/text-generation/textgen-with-txt-routing.js
index 593110f69d..c3976d702e 100644
--- a/genai/text-generation/textgen-with-txt-routing.js
+++ b/genai/text-generation/textgen-with-txt-routing.js
@@ -25,7 +25,7 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
@@ -37,7 +37,7 @@ async function generateContent(
     },
   };
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'model-optimizer-exp-04-09',
     contents: 'How does AI work?',
     config: generateContentConfig,
diff --git a/genai/text-generation/textgen-with-txt-stream.js b/genai/text-generation/textgen-with-txt-stream.js
index be8e69d595..44667a7b4f 100644
--- a/genai/text-generation/textgen-with-txt-stream.js
+++ b/genai/text-generation/textgen-with-txt-stream.js
@@ -24,13 +24,13 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
   });
 
-  const response = await ai.models.generateContentStream({
+  const response = await client.models.generateContentStream({
     model: 'gemini-2.5-flash',
     contents: 'Why is the sky blue?',
   });
diff --git a/genai/text-generation/textgen-with-txt.js b/genai/text-generation/textgen-with-txt.js
index 9325b3dd4f..ba3294ac75 100644
--- a/genai/text-generation/textgen-with-txt.js
+++ b/genai/text-generation/textgen-with-txt.js
@@ -24,13 +24,13 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
   });
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'gemini-2.5-flash',
     contents: 'How does AI work?',
   });
diff --git a/genai/text-generation/textgen-with-video.js b/genai/text-generation/textgen-with-video.js
index ee7288bd63..76b552facb 100644
--- a/genai/text-generation/textgen-with-video.js
+++ b/genai/text-generation/textgen-with-video.js
@@ -24,7 +24,7 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
@@ -43,7 +43,7 @@ async function generateContent(
     },
   };
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'gemini-2.5-flash',
     contents: [video, prompt],
   });
diff --git a/genai/tools/tools-code-exec-with-txt.js b/genai/tools/tools-code-exec-with-txt.js
index 0d0b883ac8..6aaeb0ec81 100644
--- a/genai/tools/tools-code-exec-with-txt.js
+++ b/genai/tools/tools-code-exec-with-txt.js
@@ -24,13 +24,13 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
   });
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: 'gemini-2.5-flash',
     contents:
       'What is the sum of the first 50 prime numbers? Generate and run code for the calculation, and make sure you get all 50.',
diff --git a/genai/tools/tools-func-desc-with-txt.js b/genai/tools/tools-func-desc-with-txt.js
index b416016ef6..b3f38f1c86 100644
--- a/genai/tools/tools-func-desc-with-txt.js
+++ b/genai/tools/tools-func-desc-with-txt.js
@@ -24,7 +24,7 @@ async function generateContent(
   projectId = GOOGLE_CLOUD_PROJECT,
   location = GOOGLE_CLOUD_LOCATION
 ) {
-  const ai = new GoogleGenAI({
+  const client = new GoogleGenAI({
     vertexai: true,
     project: projectId,
     location: location,
@@ -73,7 +73,7 @@ async function generateContent(
 
   const MODEL_NAME = 'gemini-2.5-flash';
 
-  const response = await ai.models.generateContent({
+  const response = await client.models.generateContent({
     model: MODEL_NAME,
     contents: prompt,
     config: {