diff --git a/homeassistant/components/ollama/config_flow.py b/homeassistant/components/ollama/config_flow.py
index 68deb00d205..bf953d54016 100644
--- a/homeassistant/components/ollama/config_flow.py
+++ b/homeassistant/components/ollama/config_flow.py
@@ -306,6 +306,14 @@ class OllamaSubentryFlowHandler(ConfigSubentryFlow):
     async_step_reconfigure = async_step_set_options
 
 
+def filter_invalid_llm_apis(hass: HomeAssistant, selected_apis: list[str]) -> list[str]:
+    """Accepts a list of LLM API IDs and filters this against those currently available."""
+
+    valid_llm_apis = [api.id for api in llm.async_get_apis(hass)]
+
+    return [api for api in selected_apis if api in valid_llm_apis]
+
+
 def ollama_config_option_schema(
     hass: HomeAssistant,
     is_new: bool,
@@ -326,6 +334,10 @@ def ollama_config_option_schema(
     else:
         schema = {}
 
+    selected_llm_apis = filter_invalid_llm_apis(
+        hass, options.get(CONF_LLM_HASS_API, [])
+    )
+
     schema.update(
         {
             vol.Required(
@@ -349,7 +361,7 @@ def ollama_config_option_schema(
                 ): TemplateSelector(),
                 vol.Optional(
                     CONF_LLM_HASS_API,
-                    description={"suggested_value": options.get(CONF_LLM_HASS_API)},
+                    description={"suggested_value": selected_llm_apis},
                 ): SelectSelector(
                     SelectSelectorConfig(
                         options=[
diff --git a/tests/components/ollama/conftest.py b/tests/components/ollama/conftest.py
index f3406bf5566..4b6b9a41fa3 100644
--- a/tests/components/ollama/conftest.py
+++ b/tests/components/ollama/conftest.py
@@ -68,6 +68,23 @@ def mock_config_entry_with_assist(
     return mock_config_entry
 
 
+@pytest.fixture
+def mock_config_entry_with_assist_invalid_api(
+    hass: HomeAssistant, mock_config_entry: MockConfigEntry
+) -> MockConfigEntry:
+    """Mock a config entry with assist."""
+    subentry = next(iter(mock_config_entry.subentries.values()))
+    hass.config_entries.async_update_subentry(
+        mock_config_entry,
+        subentry,
+        data={
+            **subentry.data,
+            CONF_LLM_HASS_API: [llm.LLM_API_ASSIST, "invalid_api"],
+        },
+    )
+    return mock_config_entry
+
+
 @pytest.fixture
 async def mock_init_component(hass: HomeAssistant, mock_config_entry: MockConfigEntry):
     """Initialize integration."""
diff --git a/tests/components/ollama/test_config_flow.py b/tests/components/ollama/test_config_flow.py
index 1a873c2adb7..ce52cfaf9ec 100644
--- a/tests/components/ollama/test_config_flow.py
+++ b/tests/components/ollama/test_config_flow.py
@@ -8,7 +8,7 @@ import pytest
 
 from homeassistant import config_entries
 from homeassistant.components import ollama
-from homeassistant.const import CONF_NAME
+from homeassistant.const import CONF_LLM_HASS_API, CONF_NAME
 from homeassistant.core import HomeAssistant
 from homeassistant.data_entry_flow import FlowResultType
 
@@ -463,6 +463,27 @@ async def test_subentry_reconfigure_with_download(
     }
 
 
+async def test_filter_invalid_llms(
+    hass: HomeAssistant,
+    mock_init_component,
+    mock_config_entry_with_assist_invalid_api: MockConfigEntry,
+) -> None:
+    """Test reconfiguring subentry when one of the configured LLM APIs has been removed."""
+    subentry = next(iter(mock_config_entry_with_assist_invalid_api.subentries.values()))
+
+    assert len(subentry.data.get(CONF_LLM_HASS_API)) == 2
+    assert "invalid_api" in subentry.data.get(CONF_LLM_HASS_API)
+    assert "assist" in subentry.data.get(CONF_LLM_HASS_API)
+
+    valid_apis = ollama.config_flow.filter_invalid_llm_apis(
+        hass, subentry.data[CONF_LLM_HASS_API]
+    )
+
+    assert len(valid_apis) == 1
+    assert "invalid_api" not in valid_apis
+    assert "assist" in valid_apis
+
+
 async def test_creating_ai_task_subentry(
     hass: HomeAssistant,
     mock_config_entry: MockConfigEntry,