Unverified50% confidenceFactExact time
Open WebUI 0.12.2 sets Function Calling to Native by default, sending tool-enabled requests with tool_choice: "auto", and vLLM rejects the request (returning 400) because the server has no tool-calling settings configured.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/17/2026
First Seen
Valid until: 1/15/2027
Sources
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