Fix Claude 4 models in Vertex (#3849)

Author: mrubens

src/shared/api.ts

@@ -658,7 +658,7 @@ export const vertexModels = {
 		inputPrice: 1.25,
 		outputPrice: 5,
 	},
-	"claude-sonnet-4-20250514:thinking": {
+	"claude-sonnet-4@20250514:thinking": {
 		maxTokens: 64_000,
 		contextWindow: 200_000,
 		supportsImages: true,
@@ -670,7 +670,7 @@ export const vertexModels = {
 		cacheReadsPrice: 0.3,
 		thinking: true,
 	},
-	"claude-sonnet-4-20250514": {
+	"claude-sonnet-4@20250514": {
 		maxTokens: 8192,
 		contextWindow: 200_000,
 		supportsImages: true,
@@ -682,7 +682,7 @@ export const vertexModels = {
 		cacheReadsPrice: 0.3,
 		thinking: false,
 	},
-	"claude-opus-4-20250514:thinking": {
+	"claude-opus-4@20250514:thinking": {
 		maxTokens: 64_000,
 		contextWindow: 200_000,
 		supportsImages: true,
@@ -694,7 +694,7 @@ export const vertexModels = {
 		cacheReadsPrice: 1.5,
 		thinking: true,
 	},
-	"claude-opus-4-20250514": {
+	"claude-opus-4@20250514": {
 		maxTokens: 8192,
 		contextWindow: 200_000,
 		supportsImages: true,