diff --git a/src/ol/tilegrid/tilegrid.js b/src/ol/tilegrid/tilegrid.js
index 64887fb263..d0b63a6975 100644
--- a/src/ol/tilegrid/tilegrid.js
+++ b/src/ol/tilegrid/tilegrid.js
@@ -25,7 +25,7 @@ goog.require('ol.tilecoord');
  * @constructor
  * @param {olx.tilegrid.TileGridOptions} options Tile grid options.
  * @struct
- * @api
+ * @api stable
  */
 ol.tilegrid.TileGrid = function(options) {
 
@@ -154,7 +154,7 @@ ol.tilegrid.TileGrid.prototype.getMinZoom = function() {
 /**
  * @param {number} z Z.
  * @return {ol.Coordinate} Origin.
- * @api
+ * @api stable
  */
 ol.tilegrid.TileGrid.prototype.getOrigin = function(z) {
   if (!goog.isNull(this.origin_)) {
@@ -170,7 +170,7 @@ ol.tilegrid.TileGrid.prototype.getOrigin = function(z) {
 /**
  * @param {number} z Z.
  * @return {number} Resolution.
- * @api
+ * @api stable
  */
 ol.tilegrid.TileGrid.prototype.getResolution = function(z) {
   goog.asserts.assert(this.minZoom <= z && z <= this.maxZoom);
@@ -180,7 +180,7 @@ ol.tilegrid.TileGrid.prototype.getResolution = function(z) {
 
 /**
  * @return {Array.<number>} Resolutions.
- * @api
+ * @api stable
  */
 ol.tilegrid.TileGrid.prototype.getResolutions = function() {
   return this.resolutions_;
@@ -369,7 +369,7 @@ ol.tilegrid.TileGrid.prototype.getTileCoordResolution = function(tileCoord) {
 /**
  * @param {number} z Z.
  * @return {number} Tile size.
- * @api
+ * @api stable
  */
 ol.tilegrid.TileGrid.prototype.getTileSize = function(z) {
   if (goog.isDef(this.tileSize_)) {