diff --git a/codex-rs/app-server-protocol/schema/json/ClientRequest.json b/codex-rs/app-server-protocol/schema/json/ClientRequest.json
index 552defad1b..63e8fbde1a 100644
--- a/codex-rs/app-server-protocol/schema/json/ClientRequest.json
+++ b/codex-rs/app-server-protocol/schema/json/ClientRequest.json
@@ -1085,6 +1085,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/ServerNotification.json b/codex-rs/app-server-protocol/schema/json/ServerNotification.json
index 90899cb152..2c290558da 100644
--- a/codex-rs/app-server-protocol/schema/json/ServerNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/ServerNotification.json
@@ -2031,6 +2031,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
index ab19f3e770..28dc006b5e 100644
--- a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
+++ b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
@@ -10160,6 +10160,8 @@
       },
       "ImageDetail": {
         "enum": [
+          "auto",
+          "low",
           "high",
           "original"
         ],
diff --git a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.v2.schemas.json b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.v2.schemas.json
index b12b0eedd8..d1c59e9855 100644
--- a/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.v2.schemas.json
+++ b/codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.v2.schemas.json
@@ -6640,6 +6640,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ItemCompletedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/ItemCompletedNotification.json
index 87d36d2927..cea3dae7d2 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ItemCompletedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ItemCompletedNotification.json
@@ -287,6 +287,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ItemStartedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/ItemStartedNotification.json
index d45fddf4ba..529667388e 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ItemStartedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ItemStartedNotification.json
@@ -287,6 +287,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/RawResponseItemCompletedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/RawResponseItemCompletedNotification.json
index e69b342282..f82acbae64 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/RawResponseItemCompletedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/RawResponseItemCompletedNotification.json
@@ -165,6 +165,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ReviewStartResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ReviewStartResponse.json
index 877eeb1278..df93fbbea5 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ReviewStartResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ReviewStartResponse.json
@@ -424,6 +424,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadForkResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadForkResponse.json
index 8c45f57d38..a9a2529fc5 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadForkResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadForkResponse.json
@@ -529,6 +529,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadListResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadListResponse.json
index a9a186228b..8ccceaaa7c 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadListResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadListResponse.json
@@ -450,6 +450,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadMetadataUpdateResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadMetadataUpdateResponse.json
index a2a4834cb3..87af03ea62 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadMetadataUpdateResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadMetadataUpdateResponse.json
@@ -450,6 +450,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadReadResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadReadResponse.json
index 5d76f9b181..a6d86c3485 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadReadResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadReadResponse.json
@@ -450,6 +450,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeParams.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeParams.json
index d4bdeda0ed..58b85d41a4 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeParams.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeParams.json
@@ -224,6 +224,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeResponse.json
index 8055ff58fc..b4fa181c88 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadResumeResponse.json
@@ -529,6 +529,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadRollbackResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadRollbackResponse.json
index d0e25a1eaa..4256d13ec4 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadRollbackResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadRollbackResponse.json
@@ -450,6 +450,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadStartResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadStartResponse.json
index d456ccebc4..6ab655a8bc 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadStartResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadStartResponse.json
@@ -529,6 +529,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadStartedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadStartedNotification.json
index dd7de34b82..91bc13a9c6 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadStartedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadStartedNotification.json
@@ -450,6 +450,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/ThreadUnarchiveResponse.json b/codex-rs/app-server-protocol/schema/json/v2/ThreadUnarchiveResponse.json
index 5929510520..0b68bfa957 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/ThreadUnarchiveResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/ThreadUnarchiveResponse.json
@@ -450,6 +450,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/TurnCompletedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/TurnCompletedNotification.json
index ddaab863f7..4856f73529 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/TurnCompletedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/TurnCompletedNotification.json
@@ -424,6 +424,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/TurnStartParams.json b/codex-rs/app-server-protocol/schema/json/v2/TurnStartParams.json
index ffc130dcc9..17b69a698e 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/TurnStartParams.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/TurnStartParams.json
@@ -123,6 +123,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/TurnStartResponse.json b/codex-rs/app-server-protocol/schema/json/v2/TurnStartResponse.json
index a2836f7f03..c5e48ae6ce 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/TurnStartResponse.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/TurnStartResponse.json
@@ -424,6 +424,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/TurnStartedNotification.json b/codex-rs/app-server-protocol/schema/json/v2/TurnStartedNotification.json
index 8c57890a3b..075699a34e 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/TurnStartedNotification.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/TurnStartedNotification.json
@@ -424,6 +424,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/json/v2/TurnSteerParams.json b/codex-rs/app-server-protocol/schema/json/v2/TurnSteerParams.json
index ef05b27673..6f5452de66 100644
--- a/codex-rs/app-server-protocol/schema/json/v2/TurnSteerParams.json
+++ b/codex-rs/app-server-protocol/schema/json/v2/TurnSteerParams.json
@@ -44,6 +44,8 @@
     },
     "ImageDetail": {
       "enum": [
+        "auto",
+        "low",
         "high",
         "original"
       ],
diff --git a/codex-rs/app-server-protocol/schema/typescript/ImageDetail.ts b/codex-rs/app-server-protocol/schema/typescript/ImageDetail.ts
index 5a62cc32f1..a48f07c088 100644
--- a/codex-rs/app-server-protocol/schema/typescript/ImageDetail.ts
+++ b/codex-rs/app-server-protocol/schema/typescript/ImageDetail.ts
@@ -2,4 +2,4 @@
 
 // This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
 
-export type ImageDetail = "high" | "original";
+export type ImageDetail = "auto" | "low" | "high" | "original";
diff --git a/codex-rs/code-mode/src/description.rs b/codex-rs/code-mode/src/description.rs
index 18d3c4555c..0c2813e51a 100644
--- a/codex-rs/code-mode/src/description.rs
+++ b/codex-rs/code-mode/src/description.rs
@@ -24,7 +24,7 @@ const EXEC_DESCRIPTION_TEMPLATE: &str = r#"Run JavaScript code to orchestrate/co
 - Global helpers:
 - `exit()`: Immediately ends the current script successfully (like an early return from the top level).
 - `text(value: string | number | boolean | undefined | null)`: Appends a text item. Non-string values are stringified with `JSON.stringify(...)` when possible.
-- `image(imageUrlOrItem: string | { image_url: string; detail?: "high" | "original" | null } | ImageContent, detail?: "high" | "original" | null)`: Appends an image item. `image_url` can be an HTTPS URL or a base64-encoded `data:` URL. To forward an MCP tool image, pass an individual `ImageContent` block from `result.content`, for example `image(result.content[0])`. MCP image blocks may request detail with `_meta: { "codex/imageDetail": "original" }`. When provided, the second `detail` argument overrides any detail embedded in the first argument.
+- `image(imageUrlOrItem: string | { image_url: string; detail?: "auto" | "low" | "high" | "original" | null } | ImageContent, detail?: "auto" | "low" | "high" | "original" | null)`: Appends an image item. `image_url` can be an HTTPS URL or a base64-encoded `data:` URL. To forward an MCP tool image, pass an individual `ImageContent` block from `result.content`, for example `image(result.content[0])`. MCP image blocks may request detail with `_meta: { "codex/imageDetail": "original" }`. When provided, the second `detail` argument overrides any detail embedded in the first argument.
 - `store(key: string, value: any)`: stores a serializable value under a string key for later `exec` calls in the same session.
 - `load(key: string)`: returns the stored value for a string key, or `undefined` if it is missing.
 - `notify(value: string | number | boolean | undefined | null)`: immediately injects an extra `custom_tool_call_output` for the current `exec` call. Values are stringified like `text(...)`.
diff --git a/codex-rs/code-mode/src/response.rs b/codex-rs/code-mode/src/response.rs
index ae92639cc0..0ac3a03770 100644
--- a/codex-rs/code-mode/src/response.rs
+++ b/codex-rs/code-mode/src/response.rs
@@ -4,6 +4,8 @@ use serde::Serialize;
 #[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq)]
 #[serde(rename_all = "lowercase")]
 pub enum ImageDetail {
+    Auto,
+    Low,
     High,
     Original,
 }
diff --git a/codex-rs/code-mode/src/runtime/value.rs b/codex-rs/code-mode/src/runtime/value.rs
index 865b5a569d..8d76a832d3 100644
--- a/codex-rs/code-mode/src/runtime/value.rs
+++ b/codex-rs/code-mode/src/runtime/value.rs
@@ -71,10 +71,14 @@ pub(super) fn normalize_output_image(
             Some(detail) => {
                 let normalized = detail.to_ascii_lowercase();
                 Some(match normalized.as_str() {
+                    "auto" => ImageDetail::Auto,
+                    "low" => ImageDetail::Low,
                     "high" => ImageDetail::High,
                     "original" => ImageDetail::Original,
                     _ => {
-                        return Err("image detail must be one of: high, original".to_string());
+                        return Err(
+                            "image detail must be one of: auto, low, high, original".to_string()
+                        );
                     }
                 })
             }
@@ -156,7 +160,7 @@ fn parse_mcp_output_image(
         .and_then(JsonValue::as_object)
         .and_then(|meta| meta.get(CODEX_IMAGE_DETAIL_META_KEY))
         .and_then(JsonValue::as_str)
-        .filter(|detail| matches!(*detail, "high" | "original"))
+        .filter(|detail| matches!(*detail, "auto" | "low" | "high" | "original"))
         .map(str::to_string);
     Ok((image_url, detail))
 }
diff --git a/codex-rs/code-mode/src/service.rs b/codex-rs/code-mode/src/service.rs
index de4ed13e58..d153f1b416 100644
--- a/codex-rs/code-mode/src/service.rs
+++ b/codex-rs/code-mode/src/service.rs
@@ -1359,7 +1359,7 @@ image(
     }
 
     #[tokio::test]
-    async fn image_helper_rejects_unsupported_detail() {
+    async fn image_helper_accepts_low_detail() {
         let service = CodeModeService::new();
 
         let response = service
@@ -1369,6 +1369,38 @@ image({
   image_url: "https://example.com/image.jpg",
   detail: "low",
 });
+"#
+                .to_string(),
+                yield_time_ms: None,
+                ..execute_request("")
+            })
+            .await
+            .unwrap();
+
+        assert_eq!(
+            response,
+            RuntimeResponse::Result {
+                cell_id: "1".to_string(),
+                content_items: vec![FunctionCallOutputContentItem::InputImage {
+                    image_url: "https://example.com/image.jpg".to_string(),
+                    detail: Some(crate::ImageDetail::Low),
+                }],
+                error_text: None,
+            }
+        );
+    }
+
+    #[tokio::test]
+    async fn image_helper_rejects_unsupported_detail() {
+        let service = CodeModeService::new();
+
+        let response = service
+            .execute(ExecuteRequest {
+                source: r#"
+image({
+  image_url: "https://example.com/image.jpg",
+  detail: "medium",
+});
 "#
                 .to_string(),
                 yield_time_ms: None,
@@ -1382,7 +1414,9 @@ image({
             RuntimeResponse::Result {
                 cell_id: "1".to_string(),
                 content_items: Vec::new(),
-                error_text: Some("image detail must be one of: high, original".to_string()),
+                error_text: Some(
+                    "image detail must be one of: auto, low, high, original".to_string()
+                ),
             }
         );
     }
diff --git a/codex-rs/core/src/tools/code_mode/response_adapter.rs b/codex-rs/core/src/tools/code_mode/response_adapter.rs
index 133d6e2fc1..e20cf6a071 100644
--- a/codex-rs/core/src/tools/code_mode/response_adapter.rs
+++ b/codex-rs/core/src/tools/code_mode/response_adapter.rs
@@ -17,6 +17,8 @@ impl IntoProtocol<ImageDetail> for CodeModeImageDetail {
     fn into_protocol(self) -> ImageDetail {
         let value = self;
         match value {
+            CodeModeImageDetail::Auto => ImageDetail::Auto,
+            CodeModeImageDetail::Low => ImageDetail::Low,
             CodeModeImageDetail::High => ImageDetail::High,
             CodeModeImageDetail::Original => ImageDetail::Original,
         }
diff --git a/codex-rs/protocol/src/models.rs b/codex-rs/protocol/src/models.rs
index 85c5a5d704..86603db1ef 100644
--- a/codex-rs/protocol/src/models.rs
+++ b/codex-rs/protocol/src/models.rs
@@ -725,6 +725,8 @@ pub enum ContentItem {
 #[derive(Debug, Clone, Copy, Serialize, Deserialize, PartialEq, Eq, JsonSchema, TS)]
 #[serde(rename_all = "lowercase")]
 pub enum ImageDetail {
+    Auto,
+    Low,
     High,
     Original,
 }
@@ -1077,7 +1079,7 @@ pub fn local_image_content_items_with_label_number(
 ) -> Vec<ContentItem> {
     let mode = match detail {
         ImageDetail::Original => PromptImageMode::Original,
-        ImageDetail::High => PromptImageMode::ResizeToFit,
+        ImageDetail::Auto | ImageDetail::Low | ImageDetail::High => PromptImageMode::ResizeToFit,
     };
 
     match load_for_prompt_bytes(path, file_bytes, mode) {
@@ -1599,6 +1601,8 @@ fn convert_mcp_content_to_items(
                         .and_then(|meta| meta.get(CODEX_IMAGE_DETAIL_META_KEY))
                         .and_then(serde_json::Value::as_str)
                         .and_then(|detail| match detail {
+                            "auto" => Some(ImageDetail::Auto),
+                            "low" => Some(ImageDetail::Low),
                             "high" => Some(ImageDetail::High),
                             "original" => Some(ImageDetail::Original),
                             _ => None,
@@ -1674,6 +1678,36 @@ mod tests {
         );
     }
 
+    #[test]
+    fn image_detail_roundtrips_all_wire_values() -> Result<()> {
+        assert_eq!(
+            serde_json::from_str::<ImageDetail>("\"auto\"")?,
+            ImageDetail::Auto
+        );
+        assert_eq!(
+            serde_json::from_str::<ImageDetail>("\"low\"")?,
+            ImageDetail::Low
+        );
+        assert_eq!(serde_json::to_string(&ImageDetail::Auto)?, "\"auto\"");
+        assert_eq!(serde_json::to_string(&ImageDetail::Low)?, "\"low\"");
+
+        let content_item: ContentItem = serde_json::from_value(serde_json::json!({
+            "type": "input_image",
+            "image_url": "data:image/png;base64,abc",
+            "detail": "auto",
+        }))?;
+
+        assert_eq!(
+            content_item,
+            ContentItem::InputImage {
+                image_url: "data:image/png;base64,abc".to_string(),
+                detail: Some(ImageDetail::Auto),
+            }
+        );
+
+        Ok(())
+    }
+
     #[test]
     fn sandbox_permissions_helpers_match_documented_semantics() {
         let cases = [
diff --git a/codex-rs/tools/src/image_detail.rs b/codex-rs/tools/src/image_detail.rs
index 145cda663c..37086f691d 100644
--- a/codex-rs/tools/src/image_detail.rs
+++ b/codex-rs/tools/src/image_detail.rs
@@ -16,7 +16,7 @@ pub fn normalize_output_image_detail(
             Some(ImageDetail::Original)
         }
         Some(ImageDetail::Original) | None => None,
-        Some(ImageDetail::High) => Some(ImageDetail::High),
+        Some(ImageDetail::Auto | ImageDetail::Low | ImageDetail::High) => detail,
     }
 }
 
diff --git a/codex-rs/tools/src/image_detail_tests.rs b/codex-rs/tools/src/image_detail_tests.rs
index 919537acf7..2e46b49d08 100644
--- a/codex-rs/tools/src/image_detail_tests.rs
+++ b/codex-rs/tools/src/image_detail_tests.rs
@@ -70,6 +70,14 @@ fn explicit_original_is_dropped_without_model_support() {
 fn explicit_non_original_detail_is_preserved() {
     let model_info = model_info();
 
+    assert_eq!(
+        normalize_output_image_detail(&model_info, Some(ImageDetail::Auto)),
+        Some(ImageDetail::Auto)
+    );
+    assert_eq!(
+        normalize_output_image_detail(&model_info, Some(ImageDetail::Low)),
+        Some(ImageDetail::Low)
+    );
     assert_eq!(
         normalize_output_image_detail(&model_info, Some(ImageDetail::High)),
         Some(ImageDetail::High)
@@ -88,7 +96,7 @@ fn sanitize_original_falls_back_to_high_without_support() {
         },
         FunctionCallOutputContentItem::InputImage {
             image_url: "data:image/png;base64,BBB".to_string(),
-            detail: Some(ImageDetail::High),
+            detail: Some(ImageDetail::Low),
         },
     ];
 
@@ -106,7 +114,7 @@ fn sanitize_original_falls_back_to_high_without_support() {
             },
             FunctionCallOutputContentItem::InputImage {
                 image_url: "data:image/png;base64,BBB".to_string(),
-                detail: Some(ImageDetail::High),
+                detail: Some(ImageDetail::Low),
             },
         ]
     );