Claude Code Bug? Response Randomly Mixed in Kimi K2 Output

No-Percentage5692 · reddit · 2026-08-02

A developer reported a bizarre bug while using Claude Code with the Sonnet 5 model. The response unexpectedly contained a paragraph generated by Kimi K2 Thinking.

The user emphasized that they never connected any third-party providers, leaving it unclear whether this was a backend routing error or another technical glitch.

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