Use claude 4.5 as the Anthropic fallback model for patcher

Author: reytchison

patcher/src/buttercup/patcher/agents/context_retriever.py

@@ -720,7 +720,7 @@ def __post_init__(self) -> None:
         self.llm = create_default_llm(model_name=ButtercupLLM.OPENAI_GPT_4_1.value)
         self.cheap_llm = create_default_llm(model_name=ButtercupLLM.OPENAI_GPT_4_1_MINI.value)
         self.cheap_fallback_llms = [
-            create_default_llm(model_name=ButtercupLLM.CLAUDE_3_7_SONNET.value),
+            create_default_llm(model_name=ButtercupLLM.CLAUDE_4_5_SONNET.value),
             create_default_llm(model_name=ButtercupLLM.GEMINI_PRO.value),
         ]
 

patcher/src/buttercup/patcher/agents/reflection.py

@@ -407,7 +407,7 @@ def __post_init__(self) -> None:
         """Initialize a few fields"""
         default_llm = create_default_llm(model_name=ButtercupLLM.OPENAI_GPT_4_1.value)
         fallback_llms: list[Runnable] = []
-        for fb_model in [ButtercupLLM.CLAUDE_3_7_SONNET, ButtercupLLM.GEMINI_PRO]:
+        for fb_model in [ButtercupLLM.CLAUDE_4_5_SONNET, ButtercupLLM.GEMINI_PRO]:
             fallback_llms.append(create_default_llm(model_name=fb_model.value))
 
         self.llm = default_llm.with_fallbacks(fallback_llms)

patcher/src/buttercup/patcher/agents/rootcause.py

@@ -138,7 +138,7 @@ def __post_init__(self) -> None:
                 model_name=m.value,
                 **kwargs,
             )
-            for m in [ButtercupLLM.CLAUDE_3_7_SONNET, ButtercupLLM.GEMINI_PRO]
+            for m in [ButtercupLLM.CLAUDE_4_5_SONNET, ButtercupLLM.GEMINI_PRO]
         ]
         self.llm = default_llm.with_fallbacks(fallback_llms)
 

patcher/src/buttercup/patcher/agents/swe.py

@@ -352,7 +352,7 @@ def understand_code_snippet(
         )
         fallback_llms: list[Runnable] = []
         for fb_model in [
-            ButtercupLLM.CLAUDE_3_7_SONNET,
+            ButtercupLLM.CLAUDE_4_5_SONNET,
             ButtercupLLM.GEMINI_PRO,
         ]:
             fallback_llms.append(create_default_llm_with_temperature(model_name=fb_model.value, **kwargs))