LLM observability & cost control — Performance Tuning Guide — Practical Guide (Aug 14, 2026) Unexpected response from model (HTTP 429).{ "error": { "message": "You have no credits remaining. Add
LLM observability & cost control — Performance Tuning Guide — Practical Guide (Aug 14, 2026) Unexpected response from model (HTTP 429).{ "error": { "message": "You have no credits remaining. Add