diff --git a/.changeset/grok-4-support.md b/.changeset/grok-4-support.md
new file mode 100644
index 00000000..9b6ef526
--- /dev/null
+++ b/.changeset/grok-4-support.md
@@ -0,0 +1,9 @@
+---
+"task-master-ai": minor
+---
+
+Add support for xAI Grok 4 model
+
+- Add grok-4 model to xAI provider with $3/$15 per 1M token pricing
+- Enable main, fallback, and research roles for grok-4
+- Max tokens set to 131,072 (matching other xAI models)
\ No newline at end of file
diff --git a/docs/models.md b/docs/models.md
index 3e3c23c5..75a1893e 100644
--- a/docs/models.md
+++ b/docs/models.md
@@ -40,6 +40,7 @@
 | perplexity  | sonar-reasoning                                | 0.211     | 1          | 5           |
 | xai         | grok-3                                         | —         | 3          | 15          |
 | xai         | grok-3-fast                                    | —         | 5          | 25          |
+| xai         | grok-4                                         | —         | 3          | 15          |
 | ollama      | devstral:latest                                | —         | 0          | 0           |
 | ollama      | qwen3:latest                                   | —         | 0          | 0           |
 | ollama      | qwen3:14b                                      | —         | 0          | 0           |
@@ -107,6 +108,7 @@
 | perplexity  | sonar-reasoning                              | 0.211     | 1          | 5           |
 | xai         | grok-3                                       | —         | 3          | 15          |
 | xai         | grok-3-fast                                  | —         | 5          | 25          |
+| xai         | grok-4                                       | —         | 3          | 15          |
 | groq        | llama-3.3-70b-versatile                      | 0.55      | 0.59       | 0.79        |
 | groq        | llama-4-scout                                | 0.45      | 0.11       | 0.34        |
 | groq        | llama-4-maverick                             | 0.52      | 0.5        | 0.77        |
@@ -149,6 +151,7 @@
 | perplexity  | sonar-reasoning                                | 0.211     | 1          | 5           |
 | xai         | grok-3                                         | —         | 3          | 15          |
 | xai         | grok-3-fast                                    | —         | 5          | 25          |
+| xai         | grok-4                                         | —         | 3          | 15          |
 | ollama      | devstral:latest                                | —         | 0          | 0           |
 | ollama      | qwen3:latest                                   | —         | 0          | 0           |
 | ollama      | qwen3:14b                                      | —         | 0          | 0           |
diff --git a/scripts/modules/supported-models.json b/scripts/modules/supported-models.json
index c0458ad9..9db7cd82 100644
--- a/scripts/modules/supported-models.json
+++ b/scripts/modules/supported-models.json
@@ -394,6 +394,17 @@
 			},
 			"allowed_roles": ["main", "fallback", "research"],
 			"max_tokens": 131072
+		},
+		{
+			"id": "grok-4",
+			"name": "Grok 4",
+			"swe_score": null,
+			"cost_per_1m_tokens": {
+				"input": 3,
+				"output": 15
+			},
+			"allowed_roles": ["main", "fallback", "research"],
+			"max_tokens": 131072
 		}
 	],
 	"ollama": [