feat: update list of models and set default to 4 (#1659)

Author: ctlai95

chat-client/src/client/mynahUi.test.ts

@@ -427,14 +427,14 @@ describe('MynahUI', () => {
 
             const newValues = {
                 'pair-programmer-mode': 'true',
-                'model-selection': BedrockModel.CLAUDE_3_5_SONNET_20241022_V2_0,
+                'model-selection': BedrockModel.CLAUDE_3_7_SONNET_20250219_V1_0,
             }
 
             handlePromptInputChange(mynahUi, tabId, newValues)
 
             const expectedOptions = [
                 { id: 'pair-programmer-mode', value: 'true' },
-                { id: 'model-selection', value: BedrockModel.CLAUDE_3_5_SONNET_20241022_V2_0 },
+                { id: 'model-selection', value: BedrockModel.CLAUDE_3_7_SONNET_20250219_V1_0 },
             ]
 
             sinon.assert.calledWith(updateStoreSpy, tabId, {

chat-client/src/client/texts/modelSelection.ts

@@ -1,17 +1,17 @@
 import { ChatItem, ChatItemFormItem, ChatItemType } from '@aws/mynah-ui'
 
 export enum BedrockModel {
+    CLAUDE_SONNET_4_20250514_V1_0 = 'CLAUDE_SONNET_4_20250514_V1_0',
     CLAUDE_3_7_SONNET_20250219_V1_0 = 'CLAUDE_3_7_SONNET_20250219_V1_0',
-    CLAUDE_3_5_SONNET_20241022_V2_0 = 'CLAUDE_3_5_SONNET_20241022_V2_0',
 }
 
 type ModelDetails = {
     label: string
 }
 
 const modelRecord: Record<BedrockModel, ModelDetails> = {
-    [BedrockModel.CLAUDE_3_5_SONNET_20241022_V2_0]: { label: 'Claude Sonnet 3.5' },
     [BedrockModel.CLAUDE_3_7_SONNET_20250219_V1_0]: { label: 'Claude Sonnet 3.7' },
+    [BedrockModel.CLAUDE_SONNET_4_20250514_V1_0]: { label: 'Claude Sonnet 4' },
 }
 
 const modelOptions = Object.entries(modelRecord).map(([value, { label }]) => ({

server/aws-lsp-codewhisperer/src/language-server/agenticChat/constants.ts

@@ -5,6 +5,4 @@ export const outputLimitExceedsPartialMsg = 'output exceeds maximum character li
 export const responseTimeoutMs = 170_000
 export const responseTimeoutPartialMsg = 'Response processing timed out after'
 export const clientTimeoutMs = 180_000
-export const defaultModelId = undefined
-// TODO: Uncomment this line when model selection is ready to release
-// export const defaultModelId = 'CLAUDE_3_7_SONNET_20250219_V1_0' // TODO: this can't be imported from chat-client, so we hardcode it here
+export const defaultModelId = 'CLAUDE_SONNET_4_20250514_V1_0' // TODO: this can't be imported from chat-client, so we hardcode it here