feat(js/plugins/google-genai): Add *-latest versions for googleAI

js/ai/src/model/middleware.ts

@@ -322,7 +322,7 @@ const DEFAULT_FALLBACK_STATUSES: StatusName[] = [
  *
  * ```ts
  * const { text } = await ai.generate({
- *   model: googleAI.model('gemini-2.5-pro'),
+ *   model: googleAI.model('gemini-pro-latest'),
  *   prompt: 'You are a helpful AI assistant named Walt, say hello',
  *   use: [
  *     retry({
@@ -406,11 +406,11 @@ export interface FallbackOptions {
  *
  * ```ts
  * const { text } = await ai.generate({
- *   model: googleAI.model('gemini-2.5-pro'),
+ *   model: googleAI.model('gemini-pro-latest'),
  *   prompt: 'You are a helpful AI assistant named Walt, say hello',
  *   use: [
  *     fallback(ai, {
- *       models: [googleAI.model('gemini-2.5-flash')],
+ *       models: [googleAI.model('gemini-flash-latest')],
  *       statuses: ['RESOURCE_EXHAUSTED'],
  *     }),
  *   ],

js/doc-snippets/src/dotprompt/index.ts

@@ -153,7 +153,7 @@ function fn09() {
   // [START definePromptTempl]
   const myPrompt = ai.definePrompt({
     name: 'myPrompt',
-    model: 'googleai/gemini-2.5-flash',
+    model: 'googleai/gemini-flash-latest',
     input: {
       schema: z.object({
         name: z.string(),
@@ -168,7 +168,7 @@ function fn10() {
   // [START definePromptFn]
   const myPrompt = ai.definePrompt({
     name: 'myPrompt',
-    model: 'googleai/gemini-2.5-flash',
+    model: 'googleai/gemini-flash-latest',
     input: {
       schema: z.object({
         name: z.string(),

js/doc-snippets/src/flows/index.ts

@@ -29,7 +29,7 @@ export const menuSuggestionFlow = ai.defineFlow(
   },
   async (restaurantTheme) => {
     const { text } = await ai.generate({
-      model: googleAI.model('gemini-2.5-flash'),
+      model: googleAI.model('gemini-flash-latest'),
       prompt: `Invent a menu item for a ${restaurantTheme} themed restaurant.`,
     });
     return text;
@@ -51,7 +51,7 @@ export const menuSuggestionFlowWithSchema = ai.defineFlow(
   },
   async (restaurantTheme) => {
     const { output } = await ai.generate({
-      model: googleAI.model('gemini-2.5-flash'),
+      model: googleAI.model('gemini-flash-latest'),
       prompt: `Invent a menu item for a ${restaurantTheme} themed restaurant.`,
       output: { schema: MenuItemSchema },
     });
@@ -72,7 +72,7 @@ export const menuSuggestionFlowMarkdown = ai.defineFlow(
   },
   async (restaurantTheme) => {
     const { output } = await ai.generate({
-      model: googleAI.model('gemini-2.5-flash'),
+      model: googleAI.model('gemini-flash-latest'),
       prompt: `Invent a menu item for a ${restaurantTheme} themed restaurant.`,
       output: { schema: MenuItemSchema },
     });
@@ -94,7 +94,7 @@ export const menuSuggestionStreamingFlow = ai.defineFlow(
   },
   async (restaurantTheme, { sendChunk }) => {
     const response = await ai.generateStream({
-      model: googleAI.model('gemini-2.5-flash'),
+      model: googleAI.model('gemini-flash-latest'),
       prompt: `Invent a menu item for a ${restaurantTheme} themed restaurant.`,
     });
 
@@ -178,7 +178,7 @@ Today's menu
       }
     );
     const { text } = await ai.generate({
-      model: googleAI.model('gemini-2.5-flash'),
+      model: googleAI.model('gemini-flash-latest'),
       system: "Help the user answer questions about today's menu.",
       prompt: input,
       docs: [{ content: [{ text: menu }] }],

js/doc-snippets/src/index.ts

@@ -19,7 +19,7 @@ import { genkit } from 'genkit';
 
 const ai = genkit({
   plugins: [googleAI()],
-  model: googleAI.model('gemini-2.5-flash'),
+  model: googleAI.model('gemini-flash-latest'),
 });
 
 async function main() {

js/doc-snippets/src/models/index.ts

@@ -19,13 +19,13 @@ import { genkit } from 'genkit';
 
 const ai = genkit({
   plugins: [googleAI()],
-  model: googleAI.model('gemini-2.5-flash'),
+  model: googleAI.model('gemini-flash-latest'),
 });
 
 async function fn01() {
   // [START ex01]
   const { text } = await ai.generate({
-    model: googleAI.model('gemini-2.5-flash'),
+    model: googleAI.model('gemini-flash-latest'),
     prompt: 'Invent a menu item for a pirate themed restaurant.',
   });
   // [END ex01]

js/doc-snippets/src/models/minimal.ts

@@ -20,7 +20,7 @@ import { genkit } from 'genkit';
 
 const ai = genkit({
   plugins: [googleAI()],
-  model: googleAI.model('gemini-2.5-flash'),
+  model: googleAI.model('gemini-flash-latest'),
 });
 
 async function main() {

js/doc-snippets/src/multi-agent/simple.ts

@@ -64,7 +64,7 @@ const reservationTool = ai.defineTool(
 
 // [START chat]
 const chat = ai.chat({
-  model: googleAI.model('gemini-2.5-pro'),
+  model: googleAI.model('gemini-pro-latest'),
   system:
     "You are an AI customer service agent for Pavel's Cafe. Use the tools " +
     'available to you to help the customer. If you cannot help the ' +

js/genkit/src/genkit.ts

@@ -681,7 +681,7 @@ export class Genkit implements HasRegistry {
    * ```ts
    * const ai = genkit({
    *   plugins: [googleAI()],
-   *   model: googleAI.model('gemini-2.5-flash'), // default model
+   *   model: googleAI.model('gemini-flash-latest'), // default model
    * })
    *
    * const { text } = await ai.generate('hi');
@@ -697,7 +697,7 @@ export class Genkit implements HasRegistry {
    * ```ts
    * const ai = genkit({
    *   plugins: [googleAI()],
-   *   model: googleAI.model('gemini-2.5-flash'), // default model
+   *   model: googleAI.model('gemini-flash-latest'), // default model
    * })
    *
    * const { text } = await ai.generate([
@@ -731,7 +731,7 @@ export class Genkit implements HasRegistry {
    *   ],
    *   messages: conversationHistory,
    *   tools: [ userInfoLookup ],
-   *   model: googleAI.model('gemini-2.5-flash'),
+   *   model: googleAI.model('gemini-flash-latest'),
    * });
    * ```
    */
@@ -773,7 +773,7 @@ export class Genkit implements HasRegistry {
    * ```ts
    * const ai = genkit({
    *   plugins: [googleAI()],
-   *   model: googleAI.model('gemini-2.5-flash'), // default model
+   *   model: googleAI.model('gemini-flash-latest'), // default model
    * })
    *
    * const { response, stream } = ai.generateStream('hi');
@@ -793,7 +793,7 @@ export class Genkit implements HasRegistry {
    * ```ts
    * const ai = genkit({
    *   plugins: [googleAI()],
-   *   model: googleAI.model('gemini-2.5-flash'), // default model
+   *   model: googleAI.model('gemini-flash-latest'), // default model
    * })
    *
    * const { response, stream } = ai.generateStream([
@@ -831,7 +831,7 @@ export class Genkit implements HasRegistry {
    *   ],
    *   messages: conversationHistory,
    *   tools: [ userInfoLookup ],
-   *   model: googleAI.model('gemini-2.5-flash'),
+   *   model: googleAI.model('gemini-flash-latest'),
    * });
    * for await (const chunk of stream) {
    *   console.log(chunk.text);

js/plugins/google-genai/src/googleai/gemini.ts

@@ -436,6 +436,9 @@ const GENERIC_GEMMA_MODEL = commonRef(
 );
 
 const KNOWN_GEMINI_MODELS = {
+  'gemini-pro-latest': commonRef('gemini-pro-latest'),
+  'gemini-flash-latest': commonRef('gemini-flash-latest'),
+  'gemini-flash-lite-latest': commonRef('gemini-flash-lite-latest'),
   'gemini-3.1-pro-preview-customtools': commonRef(
     'gemini-3.1-pro-preview-customtools'
   ),

js/plugins/vertexai/src/modelgarden/v2/anthropic.ts

@@ -91,7 +91,6 @@ export const KNOWN_MODELS = {
   'claude-opus-4-5@20251101': commonRef('claude-opus-4-5@20251101'),
   'claude-opus-4-1@20250805': commonRef('claude-opus-4-1@20250805'),
   'claude-opus-4@20250514': commonRef('claude-opus-4@20250514'),
-  'claude-3-haiku@20240307': commonRef('claude-3-haiku@20240307'),
 };
 export type KnownModels = keyof typeof KNOWN_MODELS;
 export type AnthropicModelName = `claude-${string}`;

js/plugins/vertexai/tests/modelgarden/v2/index_test.ts

@@ -34,23 +34,23 @@ import { modelName as stripPrefix } from '../../../src/modelgarden/v2/utils';
 
 describe('vertexModelGarden.model helper', () => {
   it('should return an Anthropic model reference', () => {
-    const modelName = 'claude-3-haiku@20240307';
+    const modelName = 'claude-haiku-4-5@20251001';
     const model = vertexModelGarden.model(modelName);
     assert.ok(isAnthropicModelName(stripPrefix(model.name)));
     assert.strictEqual(model.name, `vertex-model-garden/${modelName}`);
     assert.deepStrictEqual(model.configSchema, AnthropicConfigSchema);
   });
 
   it('should return a Mistral model reference', () => {
-    const modelName = 'mistral-large-2411';
+    const modelName = 'mistral-medium-3';
     const model = vertexModelGarden.model(modelName);
     assert.ok(isMistralModelName(stripPrefix(model.name)));
     assert.strictEqual(model.name, `vertex-model-garden/${modelName}`);
     assert.deepStrictEqual(model.configSchema, MistralConfigSchema);
   });
 
   it('should return a Llama model reference', () => {
-    const modelName = 'meta/llama-3.1-8b-instruct-maas';
+    const modelName = 'meta/llama-4-maverick-17b-128e-instruct-maas';
     const model = vertexModelGarden.model(modelName);
     assert.ok(isLlamaModelName(stripPrefix(model.name)));
     assert.strictEqual(model.name, `vertex-model-garden/${modelName}`);

js/testapps/basic-gemini/src/index.ts

@@ -43,7 +43,7 @@ const ai = genkit({
 
 ai.defineFlow('basic-hi', async () => {
   const { text } = await ai.generate({
-    model: googleAI.model('gemini-2.5-flash'),
+    model: googleAI.model('gemini-flash-lite-latest'),
     prompt: 'You are a helpful AI assistant named Walt, say hello',
   });
 
@@ -52,7 +52,7 @@ ai.defineFlow('basic-hi', async () => {
 
 ai.defineFlow('basic-hi-with-retry', async () => {
   const { text } = await ai.generate({
-    model: googleAI.model('gemini-2.5-pro'),
+    model: googleAI.model('gemini-pro-latest'),
     prompt: 'You are a helpful AI assistant named Walt, say hello',
     use: [
       retry({
@@ -71,7 +71,7 @@ ai.defineFlow('basic-hi-with-fallback', async () => {
     prompt: 'You are a helpful AI assistant named Walt, say hello',
     use: [
       fallback(ai, {
-        models: [googleAI.model('gemini-2.5-flash')],
+        models: [googleAI.model('gemini-flash-latest')],
         statuses: ['UNKNOWN'],
       }),
     ],
@@ -114,7 +114,7 @@ ai.defineFlow('multimodal-input', async () => {
   const photoBase64 = fs.readFileSync('photo.jpg', { encoding: 'base64' });
 
   const { text } = await ai.generate({
-    model: googleAI.model('gemini-2.5-flash'),
+    model: googleAI.model('gemini-flash-latest'),
     prompt: [
       { text: 'describe this photo' },
       {
@@ -132,7 +132,7 @@ ai.defineFlow('multimodal-input', async () => {
 // YouTube videos
 ai.defineFlow('youtube-videos', async (_, { sendChunk }) => {
   const { text } = await ai.generate({
-    model: googleAI.model('gemini-2.5-flash'),
+    model: googleAI.model('gemini-flash-latest'),
     prompt: [
       {
         text: 'transcribe this video',
@@ -152,7 +152,7 @@ ai.defineFlow('youtube-videos', async (_, { sendChunk }) => {
 // streaming
 ai.defineFlow('streaming', async (_, { sendChunk }) => {
   const { stream } = ai.generateStream({
-    model: googleAI.model('gemini-2.5-flash'),
+    model: googleAI.model('gemini-flash-latest'),
     prompt: 'Write a poem about AI.',
   });
 
@@ -168,7 +168,7 @@ ai.defineFlow('streaming', async (_, { sendChunk }) => {
 // Search grounding
 ai.defineFlow('search-grounding', async () => {
   const { text, raw } = await ai.generate({
-    model: googleAI.model('gemini-2.5-flash'),
+    model: googleAI.model('gemini-flash-latest'),
     prompt: 'Who is Albert Einstein?',
     config: {
       tools: [{ googleSearch: {} }],
@@ -184,7 +184,7 @@ ai.defineFlow('search-grounding', async () => {
 // Url context
 ai.defineFlow('url-context', async () => {
   const { text, raw } = await ai.generate({
-    model: googleAI.model('gemini-2.5-flash'),
+    model: googleAI.model('gemini-flash-latest'),
     prompt:
       'Compare the ingredients and cooking times from the recipes at ' +
       'https://www.foodnetwork.com/recipes/ina-garten/perfect-roast-chicken-recipe-1940592 ' +
@@ -209,7 +209,7 @@ ai.defineFlow('file-search', async () => {
 
   // Use the file search store in your generate request
   const { text, raw } = await ai.generate({
-    model: googleAI.model('gemini-2.5-flash'),
+    model: googleAI.model('gemini-flash-latest'),
     prompt: "What is the character's name in the story?",
     config: {
       fileSearch: {
@@ -289,7 +289,7 @@ ai.defineFlow(
   },
   async (location, { sendChunk }) => {
     const { response, stream } = ai.generateStream({
-      model: googleAI.model('gemini-2.5-flash'),
+      model: googleAI.model('gemini-flash-latest'),
       config: {
         temperature: 1,
       },
@@ -314,7 +314,7 @@ ai.defineFlow(
   },
   async (_, { sendChunk }) => {
     const { response, stream } = ai.generateStream({
-      model: googleAI.model('gemini-3.1-pro-preview'),
+      model: googleAI.model('gemini-pro-latest'),
       config: {
         temperature: 1,
       },
@@ -345,7 +345,7 @@ ai.defineFlow(
   },
   async (location, { sendChunk }) => {
     const { response, stream } = ai.generateStream({
-      model: googleAI.model('gemini-2.5-flash'),
+      model: googleAI.model('gemini-flash-latest'),
       config: {
         temperature: 1,
       },
@@ -376,7 +376,7 @@ ai.defineFlow(
   },
   async (name, { sendChunk }) => {
     const { response, stream } = ai.generateStream({
-      model: googleAI.model('gemini-2.5-flash'),
+      model: googleAI.model('gemini-flash-latest'),
       config: {
         temperature: 2, // we want creativity
       },
@@ -392,8 +392,8 @@ ai.defineFlow(
   }
 );
 
-// Gemini reasoning example.
-ai.defineFlow('reasoning', async (_, { sendChunk }) => {
+// Gemini reasoning example (legacy thinkingBudget)
+ai.defineFlow('reasoning - thinkingBudget', async (_, { sendChunk }) => {
   const { message } = await ai.generate({
     prompt: 'what is heavier, one kilo of steel or one kilo of feathers',
     model: googleAI.model('gemini-2.5-pro'),
@@ -489,6 +489,11 @@ ai.defineFlow('nano-banana-2', async (_) => {
       google_search: {
         searchTypes: { webSearch: {}, imageSearch: {} },
       },
+      thinkingConfig: {
+        // Optional
+        thinkingLevel: 'HIGH',
+        includeThoughts: true,
+      },
     },
   });
 

js/testapps/dev-ui-gallery/src/genkit.ts

@@ -81,12 +81,12 @@ export const PERMISSIVE_SAFETY_SETTINGS: any = {
 // a second instance, just for fun
 export const ai2 = genkit({
   name: 'Instance Two',
-  model: googleAI.model('gemini-2.5-flash'),
+  model: googleAI.model('gemini-flash-latest'),
   plugins: [googleAI()],
 });
 
 export const ai = genkit({
-  model: googleAI.model('gemini-2.5-flash'),
+  model: googleAI.model('gemini-flash-latest'),
   // load at least one plugin representing each action type
   plugins: [
     // model providers