# Error Handling Reference

| Error | Cause | Solution |
|-------|-------|----------|
| Invalid API Key | Key expired or miscopied | Verify key format and regenerate if needed |
| Rate Limited | Exceeded tier limits | Wait for reset or upgrade API plan |
| Model Not Available | Model requires special access | Check provider dashboard for model access |
| Insufficient Quota | No credits or billing not set | Add payment method to API account |

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