[Bug] Model fallback to Opus triggered incorrectly by "cyber" keyword in reasoning

Status Open
Reported on v2.1.237
Maintainer reply None cached
Activity 0 comments · opened Sep 10, 2026

Bug Description
the model was switched from fable to opus because the word "cyber" appeared in the chain of thought? this whole session has nothing really at all to do with computer security.

Environment Info

  • Platform: darwin
  • Terminal: Apple_Terminal
  • Version: 2.1.237
  • Feedback ID: 848dd89f-e871-4038-b1fe-9326811e1c83

Errors

[{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":\"req_011CegaWUCKE7219Qpxc5zDt\"}\n    at generate (/$bunfs/root/cli:39:39595)\n    at makeRequest (/$bunfs/root/cli:90:8063)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-09-03T13:23:34.321Z"},{"error":"Error: 500 {\"type\":\"error\",\"error\":{\"type\":\"api_error\",\"message\":\"Internal server error\"},\"request_id\":\"req_011Cegajxodi7Zov92XMo287\"}\n    at generate (/$bunfs/root/cli:39:39595)\n    at makeRequest (/$bunfs/root/cli:90:8063)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-09-03T13:26:36.961Z"}]

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