diff --git a/internal/llm/models/openrouter.go b/internal/llm/models/openrouter.go
index 10ad5a040..a902d4b8b 100644
--- a/internal/llm/models/openrouter.go
+++ b/internal/llm/models/openrouter.go
@@ -23,6 +23,7 @@ const (
 	OpenRouterClaude35Haiku  ModelID = "openrouter.claude-3.5-haiku"
 	OpenRouterClaude3Opus    ModelID = "openrouter.claude-3-opus"
 	OpenRouterDeepSeekR1Free ModelID = "openrouter.deepseek-r1-free"
+	OpenRouterGrok4          ModelID = "openrouter.grok-4"
 )
 
 var OpenRouterModels = map[ModelID]Model{
@@ -273,4 +274,17 @@ var OpenRouterModels = map[ModelID]Model{
 		ContextWindow:      163_840,
 		DefaultMaxTokens:   10000,
 	},
+	OpenRouterGrok4: {
+		ID:                 OpenRouterGrok4,
+		Name:               "OpenRouter – Grok 4",
+		Provider:           ProviderOpenRouter,
+		APIModel:           "x-ai/grok-4",
+		CostPer1MIn:        3.0,
+		CostPer1MInCached:  0.75,
+		CostPer1MOut:       15.0,
+		CostPer1MOutCached: 0,
+		ContextWindow:      256_000,
+		DefaultMaxTokens:   16_000,
+		CanReason:          true,
+	},
 }
diff --git a/opencode-schema.json b/opencode-schema.json
index 406c75f8c..467e05e6a 100644
--- a/opencode-schema.json
+++ b/opencode-schema.json
@@ -62,6 +62,7 @@
             "azure.o1-mini",
             "openrouter.claude-3.7-sonnet",
             "openrouter.gpt-4.5-preview",
+            "openrouter.grok-4",
             "grok-3-mini-beta",
             "claude-3.7-sonnet",
             "gemini-2.0-flash",
@@ -172,6 +173,7 @@
               "azure.o1-mini",
               "openrouter.claude-3.7-sonnet",
               "openrouter.gpt-4.5-preview",
+              "openrouter.grok-4",
               "grok-3-mini-beta",
               "claude-3.7-sonnet",
               "gemini-2.0-flash",