diff --git a/cmd/api_keys.go b/cmd/api_keys.go
index 0c638f4..66e0033 100644
--- a/cmd/api_keys.go
+++ b/cmd/api_keys.go
@@ -76,11 +76,12 @@ func newAPIKeysListCommand(env *environment) *cobra.Command {
 					formatMoney(key.MonthlySpend),
 					formatLimit(key.MonthlyLimit),
 					formatExpiry(key.ExpiresAt),
+					formatDate(key.CreatedAt),
 					formatLabels(key.Labels),
 				})
 			}
 
-			return writeTable(out, []string{"ID", "NAME", "SPEND", "LIMIT", "EXPIRES", "LABELS"}, rows)
+			return writeTable(out, []string{"ID", "NAME", "SPEND", "LIMIT", "EXPIRES", "CREATED", "LABELS"}, rows)
 		},
 	}
 }
@@ -115,6 +116,7 @@ func newAPIKeysShowCommand(env *environment) *cobra.Command {
 				{"Spend this month", formatMoney(key.MonthlySpend)},
 				{"Monthly limit", formatLimit(key.MonthlyLimit)},
 				{"Expires", formatExpiry(key.ExpiresAt)},
+				{"Created at", formatTime(key.CreatedAt)},
 				{"Permissions", formatPermissions(key.Permissions)},
 				{"Logging", strconv.FormatBool(key.Logging)},
 				{"Group", formatGroup(key.Group)},
diff --git a/internal/client/api_keys.go b/internal/client/api_keys.go
index cee4cd7..8cb1aea 100644
--- a/internal/client/api_keys.go
+++ b/internal/client/api_keys.go
@@ -46,6 +46,7 @@ type APIKey struct {
 	MonthlyLimit decimal.Decimal   `json:"monthly_limit"`
 	MonthlySpend decimal.Decimal   `json:"monthly_spend"`
 	ExpiresAt    *time.Time        `json:"expires_at,omitempty"`
+	CreatedAt    time.Time         `json:"created_at"`
 	Permissions  APIKeyPermissions `json:"permissions"`
 	Labels       map[string]string `json:"labels,omitempty"`
 	CreatedBy    *APIKeyUser       `json:"created_by,omitempty"`
@@ -61,6 +62,7 @@ type APIKeyDetails struct {
 	MonthlyLimit decimal.Decimal   `json:"monthly_limit"`
 	MonthlySpend decimal.Decimal   `json:"monthly_spend"`
 	ExpiresAt    *time.Time        `json:"expires_at,omitempty"`
+	CreatedAt    time.Time         `json:"created_at"`
 	Permissions  APIKeyPermissions `json:"permissions"`
 	Group        *APIKeyGroup      `json:"group,omitempty"`
 }
diff --git a/internal/client/api_keys_test.go b/internal/client/api_keys_test.go
index 25e64d9..9c27f86 100644
--- a/internal/client/api_keys_test.go
+++ b/internal/client/api_keys_test.go
@@ -62,7 +62,7 @@ func mustParseTime(t *testing.T, value string) *time.Time {
 
 func TestClientAPIKeys(t *testing.T) {
 	reply := `{"keys":[{"id":"key-1","name":"production","monthly_limit":"500","monthly_spend":"12.5",` +
-		`"expires_at":"2026-12-31T23:59:59Z",` +
+		`"expires_at":"2026-12-31T23:59:59Z","created_at":"2026-01-15T10:30:00Z",` +
 		`"permissions":{"manage":"read","completions":"write"},"labels":{"env":"prod"},` +
 		`"created_by":{"id":"user-1","email":"you@example.com"},"group":{"id":"group-1"}}]}`
 	client, seen := newTestClient(t, http.StatusOK, reply)
@@ -79,6 +79,7 @@ func TestClientAPIKeys(t *testing.T) {
 		MonthlyLimit: decimal.RequireFromString("500"),
 		MonthlySpend: decimal.RequireFromString("12.5"),
 		ExpiresAt:    mustParseTime(t, "2026-12-31T23:59:59Z"),
+		CreatedAt:    time.Date(2026, time.January, 15, 10, 30, 0, 0, time.UTC),
 		Permissions:  APIKeyPermissions{Manage: APIKeyPermissionRead, Completions: APIKeyPermissionWrite},
 		Labels:       map[string]string{"env": "prod"},
 		CreatedBy:    &APIKeyUser{ID: "user-1", Email: "you@example.com"},
@@ -88,7 +89,7 @@ func TestClientAPIKeys(t *testing.T) {
 
 func TestClientAPIKey(t *testing.T) {
 	reply := `{"id":"key-1","name":"production","logging":true,"monthly_limit":"0","monthly_spend":"3",` +
-		`"expires_at":"2026-12-31T23:59:59Z",` +
+		`"expires_at":"2026-12-31T23:59:59Z","created_at":"2026-01-15T10:30:00Z",` +
 		`"permissions":{"manage":"none","completions":"write"},"group":{"id":"group-1"}}`
 	client, seen := newTestClient(t, http.StatusOK, reply)
 
@@ -104,6 +105,7 @@ func TestClientAPIKey(t *testing.T) {
 		MonthlyLimit: decimal.RequireFromString("0"),
 		MonthlySpend: decimal.RequireFromString("3"),
 		ExpiresAt:    mustParseTime(t, "2026-12-31T23:59:59Z"),
+		CreatedAt:    time.Date(2026, time.January, 15, 10, 30, 0, 0, time.UTC),
 		Permissions:  APIKeyPermissions{Manage: APIKeyPermissionNone, Completions: APIKeyPermissionWrite},
 		Group:        &APIKeyGroup{ID: "group-1"},
 	}, key)