diff --git a/src/modules/llms/server/openai/models/openai.models.ts b/src/modules/llms/server/openai/models/openai.models.ts
index d6b68f545..75457dc7b 100644
--- a/src/modules/llms/server/openai/models/openai.models.ts
+++ b/src/modules/llms/server/openai/models/openai.models.ts
@@ -25,7 +25,10 @@ export const _knownOpenAIChatModels: ManualMappings = [
     maxCompletionTokens: 128000,
     trainingDataCutoff: 'Sep 30, 2024',
     interfaces: [LLM_IF_OAI_Chat, LLM_IF_OAI_Vision, LLM_IF_OAI_Fn, LLM_IF_OAI_Json, LLM_IF_OAI_Reasoning, LLM_IF_OAI_Responses, LLM_IF_OAI_PromptCaching, LLM_IF_HOTFIX_NoTemperature],
-    parameterSpecs: [{ paramId: 'llmVndOaiReasoningEffort4' }, { paramId: 'llmVndOaiWebSearchContext' }],
+    parameterSpecs: [
+      { paramId: 'llmVndOaiReasoningEffort4' }, { paramId: 'llmVndOaiWebSearchContext' },
+      { paramId: 'llmVndOaiRestoreMarkdown' } // activate markdown restoration (true as initial value)
+    ],
     chatPrice: { input: 1.25, cache: { cType: 'oai-ac', read: 0.125 }, output: 10 },
     benchmark: { cbaElo: 1481 },
   },
@@ -40,7 +43,7 @@ export const _knownOpenAIChatModels: ManualMappings = [
     maxCompletionTokens: 128000,
     trainingDataCutoff: 'Sep 30, 2024',
     interfaces: [LLM_IF_OAI_Chat, LLM_IF_OAI_Vision, LLM_IF_OAI_Fn, LLM_IF_OAI_Json, LLM_IF_OAI_Reasoning, LLM_IF_OAI_Responses, LLM_IF_OAI_PromptCaching, LLM_IF_HOTFIX_NoTemperature],
-    parameterSpecs: [{ paramId: 'llmVndOaiReasoningEffort4' }, { paramId: 'llmVndOaiWebSearchContext' }],
+    parameterSpecs: [{ paramId: 'llmVndOaiReasoningEffort4' }, { paramId: 'llmVndOaiWebSearchContext' }, { paramId: 'llmVndOaiRestoreMarkdown' }],
     chatPrice: { input: 1.25, cache: { cType: 'oai-ac', read: 0.125 }, output: 10 },
     benchmark: { cbaElo: 1481 },
   },
@@ -68,7 +71,7 @@ export const _knownOpenAIChatModels: ManualMappings = [
     maxCompletionTokens: 128000,
     trainingDataCutoff: 'May 30, 2024',
     interfaces: [LLM_IF_OAI_Chat, LLM_IF_OAI_Vision, LLM_IF_OAI_Fn, LLM_IF_OAI_Json, LLM_IF_OAI_Reasoning, LLM_IF_OAI_Responses, LLM_IF_OAI_PromptCaching, LLM_IF_HOTFIX_NoTemperature],
-    parameterSpecs: [{ paramId: 'llmVndOaiReasoningEffort4' }, { paramId: 'llmVndOaiWebSearchContext' }],
+    parameterSpecs: [{ paramId: 'llmVndOaiReasoningEffort4' }, { paramId: 'llmVndOaiWebSearchContext' }, { paramId: 'llmVndOaiRestoreMarkdown' }],
     chatPrice: { input: 0.25, cache: { cType: 'oai-ac', read: 0.025 }, output: 2 },
     // benchmark: { cbaElo: TBD }, // Not yet available
   },
@@ -83,7 +86,7 @@ export const _knownOpenAIChatModels: ManualMappings = [
     maxCompletionTokens: 128000,
     trainingDataCutoff: 'May 30, 2024',
     interfaces: [LLM_IF_OAI_Chat, LLM_IF_OAI_Vision, LLM_IF_OAI_Fn, LLM_IF_OAI_Json, LLM_IF_OAI_Reasoning, LLM_IF_OAI_Responses, LLM_IF_OAI_PromptCaching, LLM_IF_HOTFIX_NoTemperature],
-    parameterSpecs: [{ paramId: 'llmVndOaiReasoningEffort4' }, { paramId: 'llmVndOaiWebSearchContext' }],
+    parameterSpecs: [{ paramId: 'llmVndOaiReasoningEffort4' }, { paramId: 'llmVndOaiWebSearchContext' }, { paramId: 'llmVndOaiRestoreMarkdown' }],
     chatPrice: { input: 0.25, cache: { cType: 'oai-ac', read: 0.025 }, output: 2 },
     // benchmark: { cbaElo: TBD }, // Not yet available
   },