Claude Opus 5.5 blocks viewing Qwen's reasoning, safeguard error says sorry not allowed

andpoul · x · 2026-11-04

A developer found Claude Code with Opus 5.5 refusing to let them view Qwen's reasoning: the API error says "Opus 5.5's safeguards flagged this message," with details reasoningextraction, suggesting rephrasing in a new session or switching models. A funny/frustrating guardrail moment around cross-vendor reasoning access.

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