[Bug] Anthropic API Error: Incompatible advisor model (Opus) for request model (Fable)

Bug Description
API Error: 400 tools.9.model: 'claude-opus-4-8' cannot be used as an advisor when the request model is 'claude-fable-5'.

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.173
• Feedback ID: 6b39cd41-15f3-49ee-8903-c6a394a20faf

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"tools.9.model: 'claude-opus-4-8' cannot be used as an advisor when the request model is 'claude-fable-5'.\"},\"request_id\":\"req_011CbwoTrwNnNSi16XyScUTr\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:12:66015)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:52:7694)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-06-11T16:38:58.254Z"}]