diff --git a/api/core/model_runtime/model_providers/anthropic/llm/claude-3-5-sonnet-20240620.yaml b/api/core/model_runtime/model_providers/anthropic/llm/claude-3-5-sonnet-20240620.yaml
index e02c5517f..64ae3abf6 100644
--- a/api/core/model_runtime/model_providers/anthropic/llm/claude-3-5-sonnet-20240620.yaml
+++ b/api/core/model_runtime/model_providers/anthropic/llm/claude-3-5-sonnet-20240620.yaml
@@ -26,7 +26,6 @@ parameter_rules:
     required: false
   - name: max_tokens
     use_template: max_tokens
-    required: true
     default: 8192
     min: 1
     max: 8192
diff --git a/api/core/model_runtime/model_providers/anthropic/llm/llm.py b/api/core/model_runtime/model_providers/anthropic/llm/llm.py
index 107efe486..19ce40199 100644
--- a/api/core/model_runtime/model_providers/anthropic/llm/llm.py
+++ b/api/core/model_runtime/model_providers/anthropic/llm/llm.py
@@ -116,7 +116,8 @@ class AnthropicLargeLanguageModel(LargeLanguageModel):
         # Add the new header for claude-3-5-sonnet-20240620 model
         extra_headers = {}
         if model == "claude-3-5-sonnet-20240620":
-            extra_headers["anthropic-beta"] = "max-tokens-3-5-sonnet-2024-07-15"
+            if model_parameters.get('max_tokens') > 4096:
+                extra_headers["anthropic-beta"] = "max-tokens-3-5-sonnet-2024-07-15"
 
         if tools:
             extra_model_kwargs['tools'] = [