diff --git a/src/khoj/processor/conversation/anthropic/utils.py b/src/khoj/processor/conversation/anthropic/utils.py
index 139b27bc..de3aa02f 100644
--- a/src/khoj/processor/conversation/anthropic/utils.py
+++ b/src/khoj/processor/conversation/anthropic/utils.py
@@ -39,7 +39,7 @@ anthropic_async_clients: Dict[str, anthropic.AsyncAnthropic | anthropic.AsyncAnt
 
 DEFAULT_MAX_TOKENS_ANTHROPIC = 8000
 MAX_REASONING_TOKENS_ANTHROPIC = 12000
-REASONING_MODELS = ["claude-3-7", "claude-sonnet-4", "claude-opus-4"]
+REASONING_MODELS = ["claude-3-7", "claude-sonnet-4", "claude-opus-4", "claude-haiku-4"]
 
 
 @retry(
diff --git a/src/khoj/utils/constants.py b/src/khoj/utils/constants.py
index ae927efa..ca4e6e62 100644
--- a/src/khoj/utils/constants.py
+++ b/src/khoj/utils/constants.py
@@ -72,6 +72,8 @@ model_to_cost: Dict[str, Dict[str, float]] = {
     "claude-sonnet-4-5-20250929": {"input": 3.0, "output": 15.0, "cache_read": 0.3, "cache_write": 3.75},
     "claude-haiku-4-5": {"input": 1.0, "output": 5.0, "cache_read": 0.08, "cache_write": 1.0},
     "claude-haiku-4-5-20251001": {"input": 1.0, "output": 5.0, "cache_read": 0.08, "cache_write": 1.0},
+    "claude-opus-4-5": {"input": 5.0, "output": 25.0, "cache_read": 1.50, "cache_write": 6.25},
+    "claude-opus-4-5-20251101": {"input": 5.0, "output": 25.0, "cache_read": 1.50, "cache_write": 6.25},
     # Grok pricing: https://docs.x.ai/docs/models
     "grok-3": {"input": 3.0, "output": 15.0},
     "grok-3-latest": {"input": 3.0, "output": 15.0},