diff --git a/backend/lernen.py b/backend/lernen.py
index 6509976..e28415e 100644
--- a/backend/lernen.py
+++ b/backend/lernen.py
@@ -204,7 +204,7 @@ async def _frage_mit_kritik(
     frage = None
     for _ in range(KRITIK_MAX_RUNDEN):
         data = await _gen_call(
-            "Baustein-Frage", "fast", _frage_schema, provider,
+            "Baustein-Frage", "guide", _frage_schema, provider,
             topic=topic, baustein=baustein, section_block=section_block,
             kompakt_block=kompakt_block, transcript=transcript, vermeide_block=vermeide_block,
             typ_block=typ_block, fokus_block=fokus_block, kritik_block=kritik_block,
@@ -309,7 +309,7 @@ async def pruefung_frage_variante(
     try:
         section_block, kompakt_block = _bloecke(section, kompakt)
         data = await _gen_call(
-            "Baustein-Frage-Variante", "fast", _frage_schema, provider,
+            "Baustein-Frage-Variante", "guide", _frage_schema, provider,
             topic=topic, baustein=baustein, section_block=section_block,
             kompakt_block=kompakt_block, muster=muster,
         )
@@ -427,7 +427,7 @@ async def lueckentext_generieren(
     try:
         section_block, kompakt_block = _bloecke(section, kompakt)
         return await _gen_call(
-            "Baustein-Lueckentext", "fast", _lueck_schema, provider,
+            "Baustein-Lueckentext", "guide", _lueck_schema, provider,
             topic=topic, baustein=baustein, section_block=section_block,
             kompakt_block=kompakt_block, muster=muster,
         )