diff --git a/aider/resources/model-metadata.json b/aider/resources/model-metadata.json
index 1057ee581..e6bcd8db7 100644
--- a/aider/resources/model-metadata.json
+++ b/aider/resources/model-metadata.json
@@ -97,6 +97,22 @@
         "supports_system_messages": true,
         "supports_response_schema": true
     },
+    "openrouter/openai/o3-mini-high": {
+        "max_tokens": 100000,
+        "max_input_tokens": 200000,
+        "max_output_tokens": 100000,
+        "input_cost_per_token": 0.0000011,
+        "output_cost_per_token": 0.0000044,
+        "cache_read_input_token_cost": 0.00000055,
+        "litellm_provider": "openrouter",
+        "mode": "chat",
+        "supports_function_calling": true,
+        "supports_parallel_function_calling": true,
+        "supports_vision": true,
+        "supports_prompt_caching": true,
+        "supports_system_messages": true,
+        "supports_response_schema": true
+    },
     "openrouter/openai/gpt-4o-mini": {
         "max_tokens": 16384,
         "max_input_tokens": 128000,
diff --git a/aider/resources/model-settings.yml b/aider/resources/model-settings.yml
index 8a314c86a..4a4771f38 100644
--- a/aider/resources/model-settings.yml
+++ b/aider/resources/model-settings.yml
@@ -657,6 +657,15 @@
   editor_edit_format: editor-diff
   system_prompt_prefix: "Formatting re-enabled. "
 
+- name: openrouter/openai/o3-mini-high
+  edit_format: diff
+  weak_model_name: openrouter/openai/gpt-4o-mini
+  use_repo_map: true
+  use_temperature: false
+  editor_model_name: openrouter/openai/gpt-4o
+  editor_edit_format: editor-diff
+  system_prompt_prefix: "Formatting re-enabled. "
+
 - name: azure/o3-mini
   edit_format: diff
   weak_model_name: azure/gpt-4o-mini