diff --git a/internal/service/model_service.go b/internal/service/model_service.go
index 92a8c0d5b3..f0ca72b687 100644
--- a/internal/service/model_service.go
+++ b/internal/service/model_service.go
@@ -3087,12 +3087,14 @@ func (m *ModelProviderService) ResolveModelID(tenantID string, modelType entity.
 		return "", err
 	}
 
-	// Builtin provider is a local service (TEI), not a tenant-enrolled
-	// provider. There is no row in tenant_model_provider for it, so skip
-	// database lookups. Mirrors GetModelConfigFromProviderInstance's
-	// Builtin short-circuit and Python's resolve_model_id which returns
-	// None for Builtin TEI embeddings.
-	if modelType == entity.ModelTypeEmbedding && providerName == "Builtin" {
+	// Builtin provider: Builtin models (e.g. local TEI embeddings) have no
+	// tenant_model_instance records, so there is no tenant-scoped model ID to
+	// resolve.  Downstream resolution (ResolveModelConfig / getModelConfig)
+	// falls through to parseModelName → Builtin routing, which already works.
+	if providerName == "Builtin" && modelType == entity.ModelTypeEmbedding {
+		if builtinDriver := modelModule.GetBuiltinEmbeddingModel(pureModelName); builtinDriver == nil {
+			return "", fmt.Errorf("builtin embedding model %q not found", pureModelName)
+		}
 		return "", nil
 	}
 
diff --git a/internal/service/tenant.go b/internal/service/tenant.go
index ffee7b83ef..9aaf04c59b 100644
--- a/internal/service/tenant.go
+++ b/internal/service/tenant.go
@@ -703,6 +703,24 @@ func (s *TenantService) checkModelAvailable(tenantID, providerName, instanceName
 		return err
 	}
 
+	// Static bypass: deepdoc is a built-in model that doesn't need DB checks (mirrors Python _check_model_available).
+	if providerName == "infiniflow" && instanceName == "default" && modelName == "deepdoc" {
+		return nil
+	}
+
+	// Static bypass: OCR with infiniflow@default@deepdoc is always enabled (mirrors Python _check_model_available).
+	if modelType == "ocr" && providerName == "infiniflow" && instanceName == "default" && modelName == "deepdoc" {
+		return nil
+	}
+
+	// Static bypass: TEI Builtin embedding model when COMPOSE_PROFILES includes tei- (mirrors Python _check_model_available).
+	composeProfiles := common.GetEnv(common.EnvComposeProfiles)
+	teiModel := common.GetEnv(common.EnvTEIModel)
+	if modelType == "embedding" && strings.Contains(composeProfiles, "tei-") && teiModel != "" &&
+		modelName == teiModel && (providerName == "" || providerName == "Builtin") {
+		return nil
+	}
+
 	// Check if the provider and instance exists
 	modelProvider, err := s.modelProviderDAO.GetByTenantIDAndProviderName(tenantID, providerName)
 	if err != nil {
@@ -798,19 +816,25 @@ func (s *TenantService) SetTenantDefaultModels(userID, modelProvider, modelInsta
 			return err
 		}
 		if modelID == "" {
-			modelProviderEntity, err := s.modelProviderDAO.GetByTenantIDAndProviderName(ownedTenant.TenantID, modelProvider)
-			if err != nil {
-				return err
+			// Builtin provider doesn't use tenant_model rows; leave tenantModelID nil
+			// (mirrors Python resolve_model_id returning None for Builtin).
+			if modelProvider == "Builtin" {
+				tenantModelID = nil
+			} else {
+				modelProviderEntity, err := s.modelProviderDAO.GetByTenantIDAndProviderName(ownedTenant.TenantID, modelProvider)
+				if err != nil {
+					return err
+				}
+				modelInstanceEntity, err := s.modelInstanceDAO.GetByProviderIDAndInstanceName(modelProviderEntity.ID, modelInstance)
+				if err != nil {
+					return err
+				}
+				modelEntity, err := s.modelDAO.GetModelByProviderIDAndInstanceIDAndModelName(modelProviderEntity.ID, modelInstanceEntity.ID, modelName)
+				if err != nil {
+					return err
+				}
+				tenantModelID = modelEntity.ID
 			}
-			modelInstanceEntity, err := s.modelInstanceDAO.GetByProviderIDAndInstanceName(modelProviderEntity.ID, modelInstance)
-			if err != nil {
-				return err
-			}
-			modelEntity, err := s.modelDAO.GetModelByProviderIDAndInstanceIDAndModelName(modelProviderEntity.ID, modelInstanceEntity.ID, modelName)
-			if err != nil {
-				return err
-			}
-			tenantModelID = modelEntity.ID
 		}
 		defaultModel = fmt.Sprintf("%s@%s@%s", modelName, modelInstance, modelProvider)
 	} else {
diff --git a/rag/advanced_rag/knowlege_compile/wiki.py b/rag/advanced_rag/knowlege_compile/wiki.py
index 3e4da5a273..86ede89057 100644
--- a/rag/advanced_rag/knowlege_compile/wiki.py
+++ b/rag/advanced_rag/knowlege_compile/wiki.py
@@ -1991,9 +1991,7 @@ async def _wiki_planning_call(
 
     entities_summary = "\n".join(_wiki_format_entity_for_plan(e, reconciliation) for e in sorted_entities[:200]) or "  (none)"
     concepts_summary = "\n".join(_wiki_format_concept_for_plan(c, reconciliation) for c in sorted_concepts[:200]) or "  (none)"
-    topics_summary = "\n".join(
-        f"  - {t.strip()}" for t in raw_topics[:200] if isinstance(t, str) and t.strip()
-    ) or "  (none)"
+    topics_summary = "\n".join(f"  - {t.strip()}" for t in raw_topics[:200] if isinstance(t, str) and t.strip()) or "  (none)"
 
     kb_lines: list[str] = []
     for name, rec in reconciliation.items():
@@ -3397,11 +3395,7 @@ async def wiki_refine_from_plan(
     all_claims = plan.get("_claims") or []
     # ``all_plan_slugs`` is implicitly deduped now (pages_spec is unique).
     all_plan_slugs = [p["slug"] for p in pages_spec]
-    page_titles = {
-        str(p["slug"]): str(p.get("title") or "").strip()
-        for p in pages_spec
-        if p.get("slug") and str(p.get("title") or "").strip()
-    }
+    page_titles = {str(p["slug"]): str(p.get("title") or "").strip() for p in pages_spec if p.get("slug") and str(p.get("title") or "").strip()}
 
     # Build canonical entity/concept lookups for evidence fallback. When MAP
     # produced no claims (a real failure mode we've seen on Chinese / dense