[Bug] Anthropic API Error: Incompatible model configuration in tool advisor
Open 💬 0 comments Opened Jun 10, 2026 by zoharny
Bug Description
⏺ API Error: 400 tools.11.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: 2.1.170
- Feedback ID: c18ac7bf-3b4f-4fe4-bb1c-1307a82c9133
Errors
[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"tools.11.model: 'claude-opus-4-8' cannot be used as an advisor when the request model is 'claude-fable-5'.\"},\"request_id\":\"req_011CbuRhopffHJ2owcBDkz8r\"}\n at generate (/$bunfs/root/src/entrypoints/cli.js:11:68106)\n at makeRequest (/$bunfs/root/src/entrypoints/cli.js:51:7694)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-06-10T10:32:26.070Z"}]