diff --git a/internal/registry/model_definitions.go b/internal/registry/model_definitions.go
index 86d119fa..5f0ccccf 100644
--- a/internal/registry/model_definitions.go
+++ b/internal/registry/model_definitions.go
@@ -141,6 +141,61 @@ func GetGitHubCopilotModels() []*ModelInfo {
 			ContextLength:       128000,
 			MaxCompletionTokens: 16384,
 		},
+		{
+			ID:                  "gpt-4o-2024-11-20",
+			Object:              "model",
+			Created:             now,
+			OwnedBy:             "github-copilot",
+			Type:                "github-copilot",
+			DisplayName:         "GPT-4o (2024-11-20)",
+			Description:         "OpenAI GPT-4o 2024-11-20 via GitHub Copilot",
+			ContextLength:       128000,
+			MaxCompletionTokens: 16384,
+		},
+		{
+			ID:                  "gpt-4o-2024-08-06",
+			Object:              "model",
+			Created:             now,
+			OwnedBy:             "github-copilot",
+			Type:                "github-copilot",
+			DisplayName:         "GPT-4o (2024-08-06)",
+			Description:         "OpenAI GPT-4o 2024-08-06 via GitHub Copilot",
+			ContextLength:       128000,
+			MaxCompletionTokens: 16384,
+		},
+		{
+			ID:                  "gpt-4o-2024-05-13",
+			Object:              "model",
+			Created:             now,
+			OwnedBy:             "github-copilot",
+			Type:                "github-copilot",
+			DisplayName:         "GPT-4o (2024-05-13)",
+			Description:         "OpenAI GPT-4o 2024-05-13 via GitHub Copilot",
+			ContextLength:       128000,
+			MaxCompletionTokens: 16384,
+		},
+		{
+			ID:                  "gpt-4o",
+			Object:              "model",
+			Created:             now,
+			OwnedBy:             "github-copilot",
+			Type:                "github-copilot",
+			DisplayName:         "GPT-4o",
+			Description:         "OpenAI GPT-4o via GitHub Copilot",
+			ContextLength:       128000,
+			MaxCompletionTokens: 16384,
+		},
+		{
+			ID:                  "gpt-4-o-preview",
+			Object:              "model",
+			Created:             now,
+			OwnedBy:             "github-copilot",
+			Type:                "github-copilot",
+			DisplayName:         "GPT-4-o Preview",
+			Description:         "OpenAI GPT-4-o Preview via GitHub Copilot",
+			ContextLength:       128000,
+			MaxCompletionTokens: 16384,
+		},
 		{
 			ID:                  "gpt-5",
 			Object:              "model",