diff --git a/output/openapi/elasticsearch-openapi.json b/output/openapi/elasticsearch-openapi.json
index 13a02af617..c6b43f9a51 100644
--- a/output/openapi/elasticsearch-openapi.json
+++ b/output/openapi/elasticsearch-openapi.json
@@ -22725,7 +22725,7 @@
                     "externalDocs": {
                       "url": "https://www.elastic.co/docs/explore-analyze/elastic-inference/inference-api#infer-chunking-config"
                     },
-                    "description": "The chunking configuration object.",
+                    "description": "The chunking configuration object.\nNote that for ELSER endpoints, the max_chunk_size may not exceed `300`.",
                     "allOf": [
                       {
                         "$ref": "#/components/schemas/inference._types.InferenceChunkingSettings"
@@ -86409,7 +86409,7 @@
             }
           },
           "max_chunk_size": {
-            "description": "The maximum size of a chunk in words.\nThis value cannot be higher than `300` or lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).",
+            "description": "The maximum size of a chunk in words.\nThis value cannot be lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).\nThis value should not exceed the window size for the associated model.",
             "default": 250.0,
             "type": "number"
           },
@@ -100579,7 +100579,7 @@
         "type": "object",
         "properties": {
           "max_chunk_size": {
-            "description": "The maximum size of a chunk in words.\nThis value cannot be higher than `300` or lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).",
+            "description": "The maximum size of a chunk in words.\nThis value cannot be lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).\nThis value should not exceed the window size for the associated model.",
             "default": 250.0,
             "type": "number"
           },
diff --git a/output/openapi/elasticsearch-serverless-openapi.json b/output/openapi/elasticsearch-serverless-openapi.json
index 1d4e6f8a94..a2ae1336d0 100644
--- a/output/openapi/elasticsearch-serverless-openapi.json
+++ b/output/openapi/elasticsearch-serverless-openapi.json
@@ -13334,7 +13334,7 @@
                     "externalDocs": {
                       "url": "https://www.elastic.co/docs/explore-analyze/elastic-inference/inference-api#infer-chunking-config"
                     },
-                    "description": "The chunking configuration object.",
+                    "description": "The chunking configuration object.\nNote that for ELSER endpoints, the max_chunk_size may not exceed `300`.",
                     "allOf": [
                       {
                         "$ref": "#/components/schemas/inference._types.InferenceChunkingSettings"
@@ -58246,7 +58246,7 @@
             }
           },
           "max_chunk_size": {
-            "description": "The maximum size of a chunk in words.\nThis value cannot be higher than `300` or lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).",
+            "description": "The maximum size of a chunk in words.\nThis value cannot be lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).\nThis value should not exceed the window size for the associated model.",
             "default": 250.0,
             "type": "number"
           },
@@ -64486,7 +64486,7 @@
         "type": "object",
         "properties": {
           "max_chunk_size": {
-            "description": "The maximum size of a chunk in words.\nThis value cannot be higher than `300` or lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).",
+            "description": "The maximum size of a chunk in words.\nThis value cannot be lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).\nThis value should not exceed the window size for the associated model.",
             "default": 250.0,
             "type": "number"
           },
diff --git a/output/schema/schema.json b/output/schema/schema.json
index 5359ca8310..f500cc9d51 100644
--- a/output/schema/schema.json
+++ b/output/schema/schema.json
@@ -82512,7 +82512,7 @@
           }
         },
         {
-          "description": "The maximum size of a chunk in words.\nThis value cannot be higher than `300` or lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).",
+          "description": "The maximum size of a chunk in words.\nThis value cannot be lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).\nThis value should not exceed the window size for the associated model.",
           "name": "max_chunk_size",
           "required": true,
           "serverDefault": 250,
@@ -170952,7 +170952,7 @@
       },
       "properties": [
         {
-          "description": "The maximum size of a chunk in words.\nThis value cannot be higher than `300` or lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).",
+          "description": "The maximum size of a chunk in words.\nThis value cannot be lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).\nThis value should not exceed the window size for the associated model.",
           "name": "max_chunk_size",
           "required": false,
           "serverDefault": 250,
@@ -171033,7 +171033,7 @@
           }
         }
       ],
-      "specLocation": "inference/_types/Services.ts#L313-L371"
+      "specLocation": "inference/_types/Services.ts#L313-L372"
     },
     {
       "kind": "interface",
@@ -172770,7 +172770,7 @@
           }
         }
       ],
-      "specLocation": "inference/_types/Services.ts#L377-L404"
+      "specLocation": "inference/_types/Services.ts#L378-L405"
     },
     {
       "kind": "interface",
@@ -172918,7 +172918,7 @@
         "name": "ServiceSettings",
         "namespace": "inference._types"
       },
-      "specLocation": "inference/_types/Services.ts#L373-L373",
+      "specLocation": "inference/_types/Services.ts#L374-L374",
       "type": {
         "kind": "user_defined_value"
       }
@@ -173002,7 +173002,7 @@
         "name": "TaskSettings",
         "namespace": "inference._types"
       },
-      "specLocation": "inference/_types/Services.ts#L375-L375",
+      "specLocation": "inference/_types/Services.ts#L376-L376",
       "type": {
         "kind": "user_defined_value"
       }
@@ -177139,7 +177139,7 @@
         "kind": "properties",
         "properties": [
           {
-            "description": "The chunking configuration object.",
+            "description": "The chunking configuration object.\nNote that for ELSER endpoints, the max_chunk_size may not exceed `300`.",
             "extDocId": "inference-chunking",
             "extDocUrl": "https://www.elastic.co/docs/explore-analyze/elastic-inference/inference-api#infer-chunking-config",
             "name": "chunking_settings",
@@ -177300,7 +177300,7 @@
           }
         }
       ],
-      "specLocation": "inference/put_elser/PutElserRequest.ts#L30-L94"
+      "specLocation": "inference/put_elser/PutElserRequest.ts#L30-L95"
     },
     {
       "kind": "response",
diff --git a/specification/inference/_types/Services.ts b/specification/inference/_types/Services.ts
index 4f62699ae5..1af04c1928 100644
--- a/specification/inference/_types/Services.ts
+++ b/specification/inference/_types/Services.ts
@@ -316,7 +316,8 @@ export class InferenceEndpointInfoWatsonx extends InferenceEndpoint {
 export class InferenceChunkingSettings {
   /**
    * The maximum size of a chunk in words.
-   * This value cannot be higher than `300` or lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).
+   * This value cannot be lower than `20` (for `sentence` strategy) or `10` (for `word` strategy).
+   * This value should not exceed the window size for the associated model.
    * @server_default 250
    */
   max_chunk_size?: integer
diff --git a/specification/inference/put_elser/PutElserRequest.ts b/specification/inference/put_elser/PutElserRequest.ts
index 179bb1e379..e5a21e2cdd 100644
--- a/specification/inference/put_elser/PutElserRequest.ts
+++ b/specification/inference/put_elser/PutElserRequest.ts
@@ -79,6 +79,7 @@ export interface Request extends RequestBase {
   body: {
     /**
      * The chunking configuration object.
+     * Note that for ELSER endpoints, the max_chunk_size may not exceed `300`.
      * @ext_doc_id inference-chunking
      */
     chunking_settings?: InferenceChunkingSettings