The official source reports this update: v3.1.1. Release Notes v3.1.1 Bug Fixes The OpenAI Chat Completions and Responses converters no longer raise on an assistant message with no content parts, which a Chat Generator returns when it discards a malformed tool call. It is sent with empty content, which the APIs accept, so the next LLM call goes through. ChatMessage.from_openai_dict_format accepts the same empty content, so such a message round-trips. The Hugging Face message converter no longer raises on an assistant message with no content parts, and sends it with empty content instead.
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The OpenAI Chat Completions and Responses converters now handle empty assistant messages.
The v3.1.1 update resolves issues with empty content in assistant messages for OpenAI and Hugging Face converters.
3 Sept 20261 verified claims1 sources1 observations
This official update documents a development concerning v3.1.1. Its practical significance depends on the scope and evidence stated by the source.
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