diff --git a/backend-compliance/compliance/services/decomposition_pass.py b/backend-compliance/compliance/services/decomposition_pass.py
index d6752ba..cb329dd 100644
--- a/backend-compliance/compliance/services/decomposition_pass.py
+++ b/backend-compliance/compliance/services/decomposition_pass.py
@@ -39,7 +39,7 @@ logger = logging.getLogger(__name__)
 # ---------------------------------------------------------------------------
 
 ANTHROPIC_API_KEY = os.getenv("ANTHROPIC_API_KEY", "")
-ANTHROPIC_MODEL = os.getenv("DECOMPOSITION_LLM_MODEL", "claude-sonnet-4-6")
+ANTHROPIC_MODEL = os.getenv("DECOMPOSITION_LLM_MODEL", "claude-haiku-4-5-20251001")
 DECOMPOSITION_BATCH_SIZE = int(os.getenv("DECOMPOSITION_BATCH_SIZE", "5"))
 LLM_TIMEOUT = float(os.getenv("DECOMPOSITION_LLM_TIMEOUT", "120"))
 ANTHROPIC_API_URL = "https://api.anthropic.com/v1"