fix: Remove duplicate thinking_blocks field from Anthropic responses

Maximgitman · Maximgitman · commit 77994716fbad · 2025-10-06T22:14:01.000-04:00
- thinking_blocks now only exists in provider_specific_fields
- Keep reasoning_content as the standard OpenAI-compatible field
- Fixes duplication issue when using Anthropic with OpenAI Agents SDK
- Agents SDK now correctly sees only reasoning_content, not duplicate thinking_blocks
diff --git a/litellm/llms/anthropic/chat/transformation.py b/litellm/llms/anthropic/chat/transformation.py
@@ -962,7 +962,6 @@ def transform_parsed_response(
                     "citations": citations,
                     "thinking_blocks": thinking_blocks,
                 },
-                thinking_blocks=thinking_blocks,
                 reasoning_content=reasoning_content,
             )
 

Original file line number	Diff line number	Diff line change
`@@ -962,7 +962,6 @@ def transform_parsed_response(`
`962`	`962`	`"citations": citations,`
`963`	`963`	`"thinking_blocks": thinking_blocks,`
`964`	`964`	`},`
`965`		`- thinking_blocks=thinking_blocks,`
`966`	`965`	`reasoning_content=reasoning_content,`
`967`	`966`	`)`
`968`	`967`