diff --git a/.changeset/thick-streets-give.md b/.changeset/thick-streets-give.md
new file mode 100644
index 0000000000..293ad8583c
--- /dev/null
+++ b/.changeset/thick-streets-give.md
@@ -0,0 +1,5 @@
+---
+"roo-cline": minor
+---
+
+Update `xaiModels` and `xaiDefaultModelId` in `src/shared/api.ts`
diff --git a/src/shared/api.ts b/src/shared/api.ts
index 25196c6f10..d66aca6721 100644
--- a/src/shared/api.ts
+++ b/src/shared/api.ts
@@ -1264,7 +1264,7 @@ export const litellmDefaultModelInfo: ModelInfo = {
 // xAI
 // https://docs.x.ai/docs/api-reference
 export type XAIModelId = keyof typeof xaiModels
-export const xaiDefaultModelId: XAIModelId = "grok-3-beta"
+export const xaiDefaultModelId: XAIModelId = "grok-3"
 export const xaiModels = {
 	"grok-3-beta": {
 		maxTokens: 8192,
@@ -1304,6 +1304,44 @@ export const xaiModels = {
 		description: "xAI's Grok-3 mini fast beta model with 131K context window",
 		supportsReasoningEffort: true,
 	},
+	"grok-3": {
+		maxTokens: 8192,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 3.0,
+		outputPrice: 15.0,
+		description: "xAI's Grok-3 model with 131K context window",
+	},
+	"grok-3-fast": {
+		maxTokens: 8192,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 5.0,
+		outputPrice: 25.0,
+		description: "xAI's Grok-3 fast model with 131K context window",
+	},
+	"grok-3-mini": {
+		maxTokens: 8192,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.3,
+		outputPrice: 0.5,
+		description: "xAI's Grok-3 mini model with 131K context window",
+		supportsReasoningEffort: true,
+	},
+	"grok-3-mini-fast": {
+		maxTokens: 8192,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0.6,
+		outputPrice: 4.0,
+		description: "xAI's Grok-3 mini fast model with 131K context window",
+		supportsReasoningEffort: true,
+	},
 	"grok-2-latest": {
 		maxTokens: 8192,
 		contextWindow: 131072,